ABSTRACT Jambu is important nationally and internationally for its dietary and medicinal use, notably for espilanthol. Despite its versatility, breeding work is scarce. This study aimed to evaluate aerial traits and estimate genetic parameters in jambu accesses to support a breeding program. The experiment was conducted in a greenhouse at the Universidade Federal da Amazônia, Capitão Poço campus. The treatments included 172 genotype clones from seven municipalities in the Northeast mesoregion, obtained from a farmer’s market. Seedlings were cloned and transplanted after three weeks. The design was completely randomized with three replications and 20 cm × 20 cm spacing. At harvest, genotypes were manually removed and taken to the Campus Agricultural Engineering Laboratory to measure 17 aerial part traits. Variance components, genotypic values, and genetic parameters were estimated using REML/BLUP methodology. Genetic and phenotypic correlation matrices and selection gains of 75, 50, and 25% of the genotypes were calculated. Significant genetic variance and high heritability were observed for traits such as plant fresh mass, leaf fresh mass, and stem fresh mass, which are favorable for selection. Indirect selection can enhance leaf and capitula mass without significantly increasing stem diameter. Selecting 50% of the population yields good selection gains without compromising genetic variability.

RESUMO: O estudo de adaptabilidade, estabilidade e produtividade é importante para selecionar e recomendar genótipos superiores. Esse fato é particularmente válido para a introdução de cultivares de feijão comum no Rio de Janeiro, Brasil, cuja produção é ínfima e não atende a demanda interna. Assim, este trabalho teve como objetivo estimar parâmetros genéticos e ganhos de seleção e realizar uma seleção simultânea para adaptabilidade, estabilidade e produtividade de genótipos de feijão preto através de modelos mistos. O estudo foi realizado em três municípios do estado do Rio de Janeiro e em três anos agrícolas. Os ensaios foram instalados em delineamento de blocos casualizados com 11 genótipos e três repetições. Observou-se alta herdabilidade média (81%), acurácia seletiva (90%) e boas perspectivas de seleção. Também foram observados ganhos satisfatórios para a característica entre 1,03 e 9,49%. A seleção simultânea foi eficiente e permitiu selecionar duas linhagens de feijão preto CNFP (15290 e 15361) como sendo as mais produtivas, adaptáveis e estáveis e, portanto, têm potencial para serem lançadas como novas cultivares de feijão preto para o estado do Rio de Janeiro. RESUMO adaptabilidade superiores Brasil interna Assim mistos agrícolas 1 repetições Observouse Observou se 81%, 81 81% , (81%) 90% 90 (90% 103 03 1,0 949 9 49 9,49% 15290 (1529 15361 produtivas portanto 8 (81% (90 10 0 1, 94 4 9,49 1529 (152 1536 (81 (9 9,4 152 (15 153 (8 ( 9, 15 (1

ABSTRACT: The study of adaptability, stability, and productivity is essential for selecting and recommending superior genotypes. This fact is particularly the case for the introduction of common bean cultivars in Rio de Janeiro, Brazil, whose production is negligible and does not meet the internal demand. Thus, this study estimated genetic parameters and selection gains and undertake a simultaneous selection for adaptability, stability, and productivity in black bean genotypes via mixed models. The investigation was carried out in three municipalities in the state of Rio de Janeiro during three crop years. The trials were set up in a randomized block design with 11 genotypes and three replications. High mean heritability (81%) and selection accuracy (90%), as well as good selection prospects, were observed. Gains between 1.03 and 9.49% were achieved for grain yield. Simultaneous selection was efficient, indicating two black bean lines (CNFP 15290 and CNFP 15361) as the most productive, adaptable, and stable. As such, these lines have the potential to be released as new black bean cultivars for the state of Rio de Janeiro. ABSTRACT adaptability stability Brazil demand Thus models years 1 replications 81% 81 (81% 90%, 90 90% , (90%) prospects observed 103 03 1.0 949 9 49 9.49 yield efficient 1529 15361 productive adaptable stable such 8 (81 (90% 10 0 1. 94 4 9.4 152 1536 (8 (90 9. 15 153 ( (9

Abstract: Stayability (STAY) reflects the ability of a cow to avoid both voluntary and involuntary culling. The present study aimed to estimate variance components and heritability for STAY in Holstein and Brown Swiss cattle. Genealogical and productive data from 340 cows were used. The data were provided by Las Margaritas experimental farm, belonging to the National Institute of Forestry, Agricultural and Livestock Research of Mexico. STAY was defined as a cow’s probability of achieving a specific lactation. STAY traits analyzed were the probabilities that a cow had one (STAY1), two (STAY2), three (STAY3), four (STAY4), and five (STAY5) lactations, given that it had a first calving. Variance components and heritability were estimated with the ASREML statistical software. An animal threshold model was fitted. It included the fixed effect of the contemporary group and the covariate percentage of Holstein genes, heterozygosity, and recombination loss. The direct additive genetic effect was included as a random effect. Heritability values of 0.33 ± 0.33, 0.23 ± 0.11, 0.27 ± 0.09, 0.24 ± 0.09 and 0.29 ± 0.09 were obtained for STAY1, STAY2, STAY3, STAY4 and STAY5, respectively. The heritability values obtained were in the range of low to moderate, which suggests that the traits could be taken into account in future genetic selection programs.

Resumen El objetivo de este trabajo fue estimar los componentes de varianza y correlaciones genéticas para la producción de leche (PLe), el flujo medio (FMd), el flujo máximo (FMx) y la conductividad eléctrica (CE) de la leche, en un sistema de ordeño robotizado. Se analizaron 137 lactaciones de 110 vacas Holstein primíparas y multíparas, con 42,009 observaciones, desde el año 2018 hasta el 2020 en un hato lechero en el estado de Querétaro. Se realizó la evaluación genética utilizando un modelo animal de regresión mixta. Para estimar la heredabilidad (h2) se utilizó el algoritmo de máxima verosimilitud restringida para calcular los componentes de varianza, el estimador BLUE y el predictor BLUP, para cada una de las variables sujetas en la investigación. La h2 estimada para PLe (0.62) fue la más alta de las calculadas, de igual modo se estimó la h2 para FMd (0.44), FMx (0.33) y CE (0.28); se considera que uno de los aspectos que influyó en los valores obtenidos se debió a la variabilidad de cada observación diaria. Las correlaciones genéticas para la PLe fueron negativas para el FMd (-0.6117) y FMx (-0.7666); en contraste, para la característica de CE (-0.1669) la correlación fue baja. Las correlaciones genéticas estimadas para FMx fueron positivas para FMd (0.7422) y CE (0.5351), finalmente se estimó una correlación genética positiva para FMd y CE (0.3546). Los resultados presentados permiten entender las relaciones existentes entre flujo, conductividad y producción e indican la importancia de estas características para un programa de selección genética.

Abstract This work aimed to estimate the variance components and genetic correlations for milk yield (MiY), mean flow rate (MnF), maximum flow rate (MxF), and electrical conductivity (EC) of milk, in a robotic milking system. IT was analyzed a total of 137 lactations from 110 primiparous and multiparous Holstein cows, with 42,009 observations, from 2018 to 2020 in a dairy herd in the state of Querétaro. Genetic evaluation was performed using a mixed regression animal model. To estimate heritability (h2), the restricted maximum likelihood algorithm was used to calculate the variance components, the BLUE estimator and the BLIP predictor, for each of the variables subject to the research. The estimated h2 for MiY (0.62) was the highest of those calculated, and h2 was also estimated for MnF (0.44), MxF (0.33), and EC (0.28); it is considered that one of the aspects that influenced the values was the variability of each daily observation. Genetic correlations for MiY were negative for MnF (-0.6117) and MxF (-0.7666); in contrast, for the trait of EC (-0.1669), the correlation was low. The estimated genetic correlations for MxF were positive for MnF (0.7422) and EC (0.5351); finally, a positive genetic correlation was estimated for MnF and EC (0.3546). The results presented allow to understand the relationships between flow rate, conductivity, and yield, and they indicate the importance of these characteristics for a genetic selection program.

Resumen La velocidad de crecimiento en altura de Swietenia macrophylla destaca en términos de resistencia al ataque del barrenador Hypsipyla grandella y la selección de familias de rápido crecimiento puede viabilizar las plantaciones comerciales. Los caracteres altura, diámetro, número de hojas y forma del tronco de árboles de 4 familias de S. macrophylla, de 47,5 meses de edad, plantados en Ucayali, Perú, se utilizaron para investigar la posibilidad de seleccionar genotipos de rápido crecimiento. La heredabilidad promedio (h2m) y la precisión selectiva (Acprog) entre familias fueron moderadas para la altura total (Ht: h2m: 0,407; Acprog: 0,638) y la altura comercial (Hc: h2m: 0.472; Acprog: 0.687), además de que Hc correlacionó positivamente con la susceptibilidad a el ataque del taladro. La forma del fuste mostró diferencias importantes entre las familias y alta h2m (0,984) y Acprog (0,921). Las correlaciones genéticas (r g ) y fenotípicas (r f ) entre rasgos mostraron que una selección de individuos con mayores alturas generalmente resultará en un mayor crecimiento en diámetro, número de hojas y mejor forma del tallo. El estudio destaca la importancia de seleccionar familias con rápido crecimiento en altura y tallos rectos para posibilitar, mejorar la calidad y aumentar la productividad de las plantaciones comerciales con la especie.

Abstract The speed of growth in height of Swietenia macrophylla stands out in terms of resistance to attack by the Hypsipyla grandella borer and the selection of fast-growing families can make commercial plantings viable. The characters height, diameter, number of leaves and stem form of trees from 4 families of S. macrophylla, aged 47.5 months, planted in Ucayali, Peru, were used to investigate the possibility of selecting fast-growing genotypes. The average heritability (h2m) and selective accuracy (Acprog) between families were moderate for total height (Ht: h2m: 0.407; Acprog: 0.638) and commercial height (Hc: h2m: 0.472; Acprog: 0.687), in addition to Hc positively correlating with susceptibility to the drill attack. The stem form showed statistical differences between families and great h2m (0.984) and Acprog (0.921). The genetic (r g ) and phenotypic (r f ) correlations between traits showed that a selection of individuals with greater heights will generally result in greater growth in diameter, number of leaves and better stem form. The study highlights the importance of selecting families with fast growth in height and straight stems to enable, improve the quality and increase the productivity of commercial plantations with the species.

Resumen El feocromocitoma es un tumor derivado de las células de la cresta neural con la capacidad de producir sustancias simpaticomiméticas y, por ende, un cuadro clínico particular. Causa menos del 1 % de los casos de hipertensión arterial sistémica y su incidencia se estima entre 0,4 y 0,6 casos por 100.000 personas cada año, con una supervivencia media de siete años. De todos los tumores sólidos, el feocromocitoma tiene un mayor componente genético, que puede heredarse hasta en el 40 % de los casos. Una vez diagnosticada la enfermedad, se debe definir el tratamiento y el pronóstico, en parte condicionados por las variantes genéticas asociadas, en especial RET, SDHx, VHL y NF1. Se presenta el caso de una mujer joven con dolor abdominal e hipertensión arterial sistémica, a quien se le diagnosticó feocromocitoma. Al secuenciar el exoma, se identificó una variante patogénica extremadamente rara y de reciente descubrimiento: SDHA: c.1A>C (p.Met1Leu). La paciente respondió adecuadamente al tratamiento quirúrgico y continuó en seguimiento sin recurrencias. El abordaje diagnóstico de los pacientes con feocromocitoma comienza con la sospecha clínica, seguida de la medición de determinados metabolitos en sangre y orina, y, finalmente, los estudios de imagenología. Los desarrollos tecnológicos actuales permiten la aplicación de la medicina de precisión en este campo. En este caso de feocromocitoma, se identificó un componente genético importante que no solo afecta al paciente, sino también, a sus familiares. La tamización adecuada del caso índice permite identificar mutaciones y caracterizar mejor la enfermedad.

Abstract Pheochromocytoma is a tumor derived from neural crest cells able to produce sympathomimetic substances and, hence, a particular clinical picture. It is responsible for less than 1% of high blood pressure cases, with an estimated incidence between 0.4 and 0.6 cases per 100,000 people each year, and an average survival of seven years. Pheochromocytoma is a solid tumor with a high genetic component, as heritability can reach 40%. Once diagnosed, its treatment and prognosis are partly conditioned by the associated pathogenic variants that can be documented, especially those related to RET, SDHx, VHL, and NF1 genes. We present the case of a young woman with abdominal pain and high blood pressure, who was found to have a pheochromocytoma. Genetic testing detected a rare and recently discovered pathogenic variant: the SDHA:c.1A>C (p.Met1Leu). The patient responded adequately to the surgical treatment and continued the follow-up without documented recurrences. The diagnostic approach for pheochromocytoma patients must start with a clinical suspicion, followed by metabolite measurement in blood and urine, and finally, imaging. Currently, technology development allows precision medicine applicability. In this case of pheochromocytoma, recent developments in precision medicine resulted in the detection of associated genetic components involving the patient and her family. Adequate screening of the index patient is required for documenting pathogenic variants and better characterizing the disease.

Resumen El Trastorno del Espectro Autista es una patología de base neurobiológica con alto porcentaje de hereda bilidad y amplia lista de posibles etiologías, que pre senta cambios muy heterogéneos en la arquitectura, conectividad y sinaptogénesis neuronal, con manifes taciones clínicas características, cuyo origen apunta a causas ambientales, inmunológicas, genéticas y otras, sin haberse confirmado biomarcadores específicos. El diagnóstico se sigue basando en características típicas que incluyen conductas repetitivas y comunicación e interacción social deterioradas. Se revisan sus factores de riesgo genéticos y no genéticos para avanzar en el conocimiento sobre los procesos patológicos que pueden relacionarse a su origen.

Abstract The Autism Spectrum Disorder is a neurobiological based disorder with a high percentage of heritability and a wide list of possible etiologies that presents very heterogeneous changes in neuronal architecture, con nectivity and synaptogenesis with characteristic clinical manifestations whose origin points to environmental, immunological, genetic and other causes, without hav ing been confirmed specific biomarkers. Diagnosis con tinues to be based on typical features including repeti tive behaviors and impaired communication and social interaction. Their genetic and non-genetic risk factors are reviewed to advance knowledge about the pathologi cal processes that may be related to their origin.

RESUMEN El ostracismo a que fue sometida en el siglo pasado la especie, generó un débil aprovechamiento de la variabilidad genética en el mejoramiento genético de características de interés. El objetivo del estudio fue estimar los parámetros genéticos, correlación y análisis de sendero para 13 caracteres agronómicas, el contenido de cannabidiol (CBD) y tetrahidrocannabinol (THC) en 10 genotipos de cannabis procedentes de diferentes departamentos de Colombia. El estudio se realizó en invernadero con cubierta de policarbonato y malla antiáfido, en Pueblo Bello, Cesar (Colombia). Se utilizó un diseño de bloques completos al azar con 10 tratamientos (genotipos) y tres repeticiones. Cada unidad experimental estuvo conformada por 20 plantas obtenidas de plantas madre, y trasplantadas a 14 cm entre surcos y entre plantas. Se detectaron diferencias significativas (P≤0,01) entre genotipos para todas las características investigadas. La heredabilidad en sentido amplio acusó valores, superiores al 82% para todas las características. Se detectó variabilidad genética entre los genotipos para el número de foliolos, longitud de entrenudos del tallo principal, longitud del peciolo, longitud del foliolo central, anchura del foliolo central, número de tallos por planta, THC y CBD, lo cual permitó obtener ganancias genéticas superior al 30%. Existió correlación fenotípica y genotípica alta, inversa y significativa entre el porcentaje de CBD y THC (r=-0,93**). En general, el efecto directo e indirecto a través de la anchura del foliolo central explican el nivel de asociación entre CBD y THC con los caracteres correlacionados. Es posible aumentar el CBD y THC, a través de la selección de genotipos con mayor ancho del foliolo central.

ABSTRACT The ostracism to which the species was subjected in the last century generated a weak use of genetic variability in the genetic improvement of characteristics of interest. This study aimed to estimate genetic parameters, correlation, and path analysis for 13 agronomic traits, cannabidiol (CBD) and tetrahydrocannabinol (THC) content in 10 cannabis genotypes from different departments of Colombia. The study was conducted under greenhouse conditions with a polycarbonate cover and anti-aphid mesh at the La Esperanza farm in Pueblo Bello, Cesar (North Colombia). A randomized complete block design with 10 treatments (genotypes) and three replicates was used. Each experimental unit consisted of 20 plants obtained from mother plants and transplanted at 14 cm between rows and between plants. Significant differences (P≤0.01) were detected between genotypes for all traits and THC and CBD content. Heritability in a broad sense showed values higher than 82% for all the traits studied. Genetic variability between genotypes was detected for number of leaflets, internode length of main stem, length of petiole, central leaflet-length, width of central leaflet, number of stems per plant, CBD, and THC, which allowed obtaining genetic gains higher than 30%. There was a high, inverse, and significant phenotypic and genotypic correlation between the percentage of CBD and THC (r=-0.93**). Overall, width of central leaflet direct and indirect effects explains the association level between CBD and THC with the correlated traits. It is possible to increase CBD and THC by selecting genotypes with higher width of central leaflet.

ABSTRACT Background: The breeding of water buffaloes for milk production reaches 41 years in the Cuban livestock panorama. Objective. An analysis of dairy behavior was carried out in different herds in the country and compared with that of the Los Naranjos enterprise, the behavior of the Most Probable Productive Ability (HPMP) was analyzed and genetic components were estimated for different dairy traits of the buffaloes belonging to that particular company. Methods: A total of 24 907 lactations from different herds in the country and 6 498 from the Los Naranjos company that occurred between 2013 to 2020, were studied using multicharacter linear models with random effects of father and the female that produces the record, models to estimate some environmental factors. and genetics that affect milk production at 100 days (L100); 200 days (L200), total milk (Ltot) and the duration of lactation (Dlac). Results: The females that gave birth in 2020 produced -62,1 kg and -96,2 kg of L200 and Ltot respectively compared to those that gave birth in 2013, even though Dlac increased by 15 days in the same period. A wide variability was manifested in the most probable productive ability (HPMP), but the evolution of this indicator depending on the year of birth of the buffaloes was practically null, indicating the little selection pressure exerted in the breeding of this species. Repeatability estimates (() were between 0,372 to 0,397 for L100; L200 and Ltot, magnitudes practically twice as high in the Los Naranjos company compared to the rest of the country. Heritability estimates (h2) were between ≈0,217±0,01 and 0,166±0,02 for L100; L200 and Ltot respectively with genetic correlations greater than 0,961. From the expected differences in the progenies (DEP), it was found that the daughters of the best 20 sires reached an EPD of +37,6±12.9 kg in L200 and +42,5±15,7 kg for Ltot. Conclusions: The indicators under study did not present a favorable evolution, however, possibilities for selection and improvement work are evident.

RESUMEN Antecedentes: La cría de búfalas de agua para la producción de leche alcanza 41 años en el panorama pecuario cubano. Objetivos. Se realizó un análisis del comportamiento lechero, en diferentes rebaños del país y se compararon con el de la empresa Los Naranjos, se analizó el comportamiento de la Habilidad Productiva Más Probable (HPMP) y se estimaron componentes genéticos para diferentes rasgos lecheros de las búfalas pertenecientes a esa empresa en particular. Métodos: Un total de 24 907 lactancias de diferentes rebaños del país y 6 498 de la Empresa Los Naranjos que ocurrieron entre 2013 a 2020, se estudiaron mediante modelos lineales multicarácter con efectos aleatorios de padre y de la hembra que produce el registro, modelos para estimar algunos factores ambientales y genéticos que afectan la producción de leche a 100 días (L100); 200 días (L200), leche total (Ltot) y la duración de la lactancia (Dlac). Resultados: Las hembras que parieron en el año 2020 produjeron -62,1 kg y -96,2 kg de L200 y Ltot respectivamente respecto a las paridas en 2013, aun cuando la Dlac se incrementó en 15 días en el mismo periodo. Se manifestó una amplia variabilidad en la habilidad productiva más probable (HPMP), pero la evolución de este indicador en función del año de nacimiento de las búfalas fue prácticamente nula, indicando la poca presión de selección ejercida en la crianza de esta especie. Los estimados de repetibilidad (() estuvieron entre 0,372 a 0,397 para L100; L200 y Ltot, magnitudes prácticamente dos veces superiores en la empresa Los Naranjos respecto al resto del país. Los estimados de heredabilidad (h2) estuvieron entre ≈0.217±0.01 y 0.166±0,02 para L100; L200 y Ltot respectivamente con correlaciones genéticas superiores a 0,961. A partir de las diferencias esperadas en las progenies (DEP) se constató que las hijas de los mejores 20 sementales alcanzaron un DEP de +37,6±12,9 kg en L200 y +42,5±15,7 kg para Ltot. Conclusiones: Los indicadores bajo estudio no presentaron una evolución favorable, no obstante, se evidencian posibilidades para el trabajo de selección y mejora.

SUMMARY Pinus patula seeds are in high demand for the establishment of plantations in Mexico and around the world because of the fast growth of this species. However, genetically improved germplasm of forest species is scarce in Mexico. For this reason, in 2012, the Mexican government started a program of asexual seed orchards with species of the Pinus genus to meet the germplasm demand. Thus, the objectives of the present research were: to evaluate the height, diameter at breast height, and volume of Pinus patula clones in an asexual seed orchard and to estimate the heritability of these traits. The asexual seed orchard was established in 2012. The diameter at breast height and total height (DBH) were measured and the volume of each ramet was calculated. Subsequently, clonal heritability was estimated for each trait in the four-year-age clones. Differences were found among clones. The average height was 4.38 m, and it varied from 3.39 to 4.80 m for the clones 103 and 28, respectively. The average DBH was 5.46 cm and varied from 3.98 to 6.52 cm for clones 103 and 25, respectively. The average volume was 6.23 dm3 showing a range from 2.62 to 9.53 dm3 for clones 103 and 25, respectively. Clones of Pinus patula had high values of height, DBH, and volume. Heritability values for height, DBH and volume were 0.655, 0.508 and 0.575, respectively. Thus, these traits show high heritability, in other words, they are influenced by genetic component.

RESUMEN Las semillas de Pinus patula tiene una alta demanda para el establecimiento de plantaciones en México y en el mundo por el rápido crecimiento de los árboles de esta especie. Sin embargo, germoplasma genéticamente mejorado de especies forestales es poco disponible en México. Esta fue la razón por la que el gobierno de México inició en 2012 un programa de huertos semilleros asexuales con varias especies del género Pinus y satisfacer la demanda de germoplasma. Por lo tanto, los objetivos de la presente investigación fueron: evaluar la altura, diámetro a la altura de pecho y volumen de los clones de Pinus patula en un huerto asexual y estimar la heredabilidad de estas características. Se estableció el huerto semillero asexual en 2012. Se midió́ el diámetro a la altura del pecho (DAP) y altura total, y se calculó el volumen de cada rameto en el huerto. Posteriormente, se estimó la heredabilidad clonal para cada una de las características de clones de cuatro años. Se encontraron diferencias entre clones. La altura promedio fue 4,38 m, y esta varió entre 3,39 y 4,80 m para los clones 103 y 28, respectivamente. El diámetro promedio fue 5,46 cm y varió de 3,98 a 6,52 cm para los clones 103 y 25 respectivamente. El volumen promedio fue 6,23 dm3 y mostró un rango entre 2,62 y 9,53 dm3 para los clones 103 y 25 respectivamente. Clones de Pinus patula tuvieron valores elevados en altura, DAP y volumen. Los valores de heredabilidad fueron 0,655, 0,508 y 0,575 para altura, DAP y volumen, respectivamente. Por lo tanto, estas variables mostraron una heredabilidad alta, es decir están influenciadas por el componente genético.

SUMMARY A common garden trial with 18-month-old trees from 64 half-sib families of Pinus patula was established to identify genetic variation in growth and survival in response to drought for four months (November 25, 2020 to March 25, 2021, winter). A split-plot design with two moisture levels (Irrigation S0 = 40 - 55 % and Drought S1 = 20 - 39 % volumetric moisture) was used in large plots and families in small plots. At the beginning and end of the trial, the height (HT), diameter of the base (DB), and number of whorls and branches were determined, and the absolute (AGR) and relative (RGR) growth rates in HT and DB were calculated. Differences were found between the moisture levels during growth. Survival was 71 % in S0 and 60 % in S1. In S1, AGR in HT and DB was affected by 52 and 38 %, and RGR by 46 and 32 %, respectively, with respect to S0. In S0, 31.4 % of the plants formed one whorl and 2.1 % two, in S 1 only 13.4 % and 0.2 % did. Genetic control was moderate in the joint environments with h 2 i between 0.03 and 0.17 and h 2 f between 0.15 and 0.53. The performance of the families between the two humidity conditions was stable (r B from 0.71 to 1.0) in all variables, with greater genetic variation in S0 than in S1. Moderate genetic variability was observed in the growth of Pinus patula families under water restriction.

RESUMEN Se estableció un ensayo de jardín común con árboles de 18 meses de edad de 64 familias de medios hermanos de Pinus patula para identificar variación genética en el crecimiento y supervivencia en respuesta a sequía por cuatro meses (25 de noviembre 2020 a 25 marzo 2021, invierno). Se utilizó un diseño en parcelas divididas con dos niveles de humedad (Riego S0 = 40-55 % y Sequía S1 = 20-39 % de humedad volumétrica) en parcelas grandes y las familias en las chicas. Al inicio y final del ensayo se determinó altura (AT), diámetro de la base (DB), número de verticilos y ramas, y se calculó la tasa absoluta (TAC) y relativa (TRC) de crecimiento en AT y DB. Se encontraron diferencias entre niveles de humedad en el crecimiento. La supervivencia fue 71 % en S0 y 60 % en S1. En S1 la TAC en AT y DB se afectó en 52 y 38 % y la TRC en 46 y 32 %, con respecto a S0. En S0, 31,4 % de las plantas formaron un verticilo y 2,1 % dos, en S1 solo 13,4 % y 0,2 % lo hicieron. El control genético fue moderado en los ambientes en conjunto con h i 2 entre 0,03 y 0,17 y de ℎ 𝑓 2 entre 0,15 y 0,53. El desempeño de las familias entre las dos condiciones de humedad fue estable ( 𝑟 𝐵 de 0,71 a 1,0) en todas las variables, con mayor variación genética en S0 que en S1. Se encontró una moderada variabilidad genética en el crecimiento de las familias de Pinus patula bajo restricción hídrica.

ABSTRACT The knowledge of correlations between multiple characteristics in plant breeding leads to more effective selection strategies. The path analysis allows refining these correlations and partitioning them into direct and indirect effects on the main variable. The path analysis becomes more effective when based on predicted genotypic values rather than phenotypic values. The objective was to evaluate correlations between the main agronomic characteristics of grapevine cultivation and their direct and indirect effects on yield per plant to improve selection strategies to reach superior progenies. A randomized complete block design was installed using four cultivars and two rootstocks, five repetitions, and plots of four plants. Data from three crop seasons were analyzed from a mixed model and genetic correlations were subject to the path analysis. A high and positive significant correlation was found between average fruit production and the number of clusters per plant. On the other hand, the average production per plant showed a low correlation to cluster width and height per grapevine. Wider and higher berries tend to increase berry fresh mass and therefore increase the contents of soluble solids and reducing sugars. Among the features, the number of clusters per plant has the strongest direct effect on fruit production in grape cultivars. Berry fresh mass, berry length, and berry width were indirectly influenced by the number of clusters and showed high heritability compared to yield and number of clusters. These characteristics could be used in indirect selection.

RESUMO Grãos da espécie Coffea canephora são utilizados para diversos fins industriais, dentre os quais se destacam o uso como cafés solúveis e para produção de bebidas em blends com a espécie Coffea arabica. Devido ao aumento da demanda, a EMBRAPA lançou dez cultivares monoclonais de cafeeiros C. canephora, com nome Robustas Amazônicos, adaptados às condições de cultivo da Amazônia brasileira, entretanto, a composição química dos grãos destes clones ainda é pouco conhecida. O objetivo do estudo foi estimar parâmetros genéticos para as características avaliadas e determinar os teores de compostos bioativos e de ácidos orgânicos nas dez cultivares. A unidade experimental foi instalada em Manaus, Amazonas, constituída de plantas das cultivares BRS 1216, BRS 2299, BRS 2314, BRS 2336, BRS 2357, BRS 3137, BRS 3193, BRS3210, BRS 3213 e BRS 3220. As cultivares foram 0,78 g.100g-1; os de ácidos clorogênicos de 3,77 a 5,31 g.100g-1; o de cafeína de 2,31 a 4,13 g.100g-1 e o de ácido cítrico de 0,76 a 1,28 g.100g-1. Observou-se que existe variabilidade genética entre as variedades para os compostos estudados e as cultivares podem ser utilizadas no melhoramento genético para desenvolvimento de novas cultivares. industriais arabica demanda C Amazônicos brasileira entretanto conhecida Manaus Amazonas 1216 2299 2314 2336 2357 3137 3193 BRS3210 321 3220 078 0 78 0,7 g.100g1 g100g1 gg g.100g 1 g 100g 377 3 77 3,7 531 5 31 5,3 231 2 2,3 413 4 13 4,1 g.100g- 076 76 128 28 1,2 g.100g1. 1. Observouse Observou 121 229 233 235 313 319 BRS321 32 322 07 7 0, 100g1 g100g 37 3, 53 5, 23 2, 41 4, 12 1, 22 BRS32 BRS3

ABSTRACT Coffea canephora beans are used for various industrial purposes, among which the use as soluble coffees stands out for producing beverages in blends with Coffea arabica. Due to the increase in demand, EMBRAPA launched ten monoclonal C. canephora cultivars, named Amazonian Robustas, adapted to the growing conditions of the Brazilian Amazon. However, the chemical composition of the beans of these cultivars is still little known. The present study aimed to estimate genetic parameters for the evaluated characteristics and determine the levels of bioactive compounds and organic acids in ten C. canephora cultivars. The experiment was set in Manaus, Amazonas, consisting of plants from the cultivars BRS 1216, BRS 2299, BRS 2314, BRS 2336, BRS 2357, BRS 3137, BRS 3193, BRS3210, BRS 3213, and BRS 3220. The cultivars were characterized according to the profile of bioactive compounds and organic acids. Analysis of variance, mean test, and genetic caracterizadas quanto ao perfil de bioativos e ácidos orgânicos. Foi parameters (genetic, environmental, and phenotypic variance and realizada análise de variância, teste de médias e estimados heritability) were conducted. The heritability of characters was parâmetros genéticos como variância genética, ambiental, fenotípica considered from intermediate 63.76% (trigonelline) to high 88.44% e herdabilidade. A herdabilidade dos caracteres foi considerada de (caffeine). Of the compounds studied, trigonelline contents ranged mediana, 63,76%, para trigonelina, a alta, 88,44%, para cafeína. Dos from 0.54 to 0.78 g.100g-1, chlorogenic acids from 3.77 to 5.31 compostos estudados, os teores de trigonelina variaram de 0,54 a g.100g-1, caffeine from 2.31 to 4.13 g.100g-1, and citric acid from 0.76 to 1.28 g.100g-1. It was observed that there is genetic variability among the cultivars for the compounds studied, and the cultivars can be used in breeding programs for the development of new cultivars. purposes arabica demand C Robustas Amazon However known Manaus Amazonas 1216 2299 2314 2336 2357 3137 3193 BRS3210 3213 3220 test orgânicos genetic, (genetic environmental conducted genética ambiental 6376 63 76 63.76 (trigonelline 8844 88 44 88.44 caffeine. . (caffeine) studied mediana 63,76% alta 88,44% cafeína 054 0 54 0.5 078 78 0.7 g.100g1, g100g1 gg g.100g 1, g 100g 1 g.100g-1 377 3 77 3.7 531 5 31 5.3 estudados 0,5 231 2 2.3 413 4 13 4.1 076 128 28 1.2 g.100g1. 1. 121 229 233 235 313 319 BRS321 321 322 637 6 7 63.7 884 8 88.4 (caffeine 63,76 88,44 05 0. 07 100g1 g.100g1 g100g g.100g- 37 3. 53 5. 0, 23 2. 41 4. 12 22 BRS32 32 63. 88. 63,7 88,4 BRS3 63, 88,

RESUMO Espécies do gênero Corymbia são consideradas potenciais alternativas ao eucalipto. Além de possuir madeira de qualidade superior, Corymbia spp. são tolerantes à maioria das pragas, doenças e estresses abióticos que afetam as plantações de eucalipto, incluindo distúrbios fisiológicos, déficit hídrico e danos causados pelo vento. No entanto, as tensões ambientais estimulam a produção de kino, o que diminui a qualidade da celulose e da madeira serrada. Este estudo teve como objetivo estabelecer um método para avaliação de kino e estimativa de parâmetros genéticos em Corymbia. Para isso foram utilizados 16 clones híbridos de Corymbia (C. citriodora × C. torelliana) e 5 clones de Eucalyptus. Dois métodos (M1 e M2) foram testados para avaliação; M1 consistiu na perfuração da casca com Pilodyn e M2 consistiu na perfuração do cerne com Pilodyn. Foram avaliados os seguintes parâmetros: incidência de exsudação, comprimento do exsudato que fluiu sobre o caule e peso do exsudato. Os parâmetros genéticos foram estimados por um método de modelo misto (REML/BLUP). A significância dos efeitos aleatórios do modelo estatístico foi testada pelo teste da razão de verossimilhança. Efeitos clones significativos foram obtidos para todos os parâmetros, exceto para o comprimento do exsudato avaliado por M2. Os parâmetros determinados por M1 apresentaram maior herdabilidade e precisão. Portanto, M1 deve ser preferido para avaliação de kino em Corymbia. eucalipto superior spp pragas fisiológicos vento entanto serrada 1 C (C torelliana Eucalyptus M (M exsudação REML/BLUP. REMLBLUP REML/BLUP . REML BLUP (REML/BLUP) verossimilhança precisão Portanto (REML/BLUP

ABSTRACT Species within the genus Corymbia are regarded as potential alternatives to Eucalyptus. In addition to having superior wood quality, Corymbia spp. are tolerant to most pests, diseases, and abiotic stresses that affecting Eucalyptus plantations, including physiological disorders, water deficit, and wind damage. However, environmental stresses stimulate kino production, which decreases the quality of pulp and sawn wood. This study aimed to develop a method for evaluating kinoand estimate genetic parameters in Corymbia. For this, 16 Corymbia (C. citriodora × C. torelliana) hybrid clones and 5 clones of Eucalyptus were used. Two evaluation methods (M1 and M2) were tested for kino evaluation; M1 consisted of drilling the bark with Pilodyn and M2 consisted of drilling the heartwood with Pilodyn. The following kino parameters were evaluated: exudation incidence, exudate length which flowed over the stem, and exudate weight. Genetic parameters were estimated by a mixed model method (REML/BLUP). The significance of random effects of the statistical model was tested by the likelihood ratio test. Significant clone effects were obtained for all kino parameters, except for exudate length as assessed by M2. Kino parameters determined by M1 exhibited higher heritability and accuracy. Therefore, M1 should be preferred for kino evaluation in Corymbia. spp pests diseases plantations disorders deficit damage However production this 1 C (C torelliana used M (M evaluated incidence stem weight REML/BLUP. REMLBLUP REML/BLUP . REML BLUP (REML/BLUP) test accuracy Therefore (REML/BLUP

Abstract We aimed to estimate genetic parameters and select sorghum lines for forage purposes based on agronomic and chemical traits. A total of 100 inbred lines, comprising the biomass/bmr, biomass, dual purpose (sweet/forage), and forage types, were evaluated in the 2020/2021 and 2021/2022 crop years. We analyzed the data using a linear mixed model approach. Genetic variance, line mean-based heritability, selection accuracy, genetic correlation between traits and crops and the coefficient of experimental variation were estimated. The breeding values of the lines were predicted, and the factor analysis and genotype-ideotype distance index based on BLUP (FAI-BLUP) were applied for multi-trait selection. Biomass production and cell wall composition traits were measured. There was genetic variation among the lines, with moderate to high heritability. The lines selected by the FAI-BLUP index resulted in significant genetic gains expected with selection for all traits. 10 biomassbmr biomass bmr biomass/bmr sweet/forage, sweetforage sweet/forage , sweet (sweet/forage) types 20202021 2020 2021 2020/202 20212022 2022 2021/202 years approach variance meanbased mean heritability accuracy estimated predicted genotypeideotype genotype ideotype FAIBLUP FAI (FAI-BLUP multitrait multi trait measured 1 (sweet/forage 2020202 202 2020/20 2021202 2021/20 202020 20 2020/2 202120 2021/2 20202 2 2020/ 20212 2021/