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Abstract The hybrids are responsive to phosphorus application, have high use efficiency and can produce high mean yields in environments with low and high phosphorus. The mean PE of these hybrids is high, therefore they are recommended for cultivation in the North and Northwest regions of Rio de Janeiro State, Brazil. application State Brazil

https://doi.org/10.1590/1984-70332023v23n1c8

UENF N01, UENF N02 and UENF N03: popcorn cultivars with elevated nitrogen-use effectiveness N01 N N0 N03 nitrogenuse nitrogen use
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Amaral Junior, Antonio Teixeira do

; Ribeiro, Rodrigo Moreira

; Santos, Adriano dos

; Souza, Yure Pequeno de

; Kamphorst, Samuel Henrique

; Lima, Valter Jario de

; Viana, Flávia Nicácio

; Khan, Shahid

; Santos Junior, Divino Rosa dos

; Santos, Talles de Oliveira

; Bispo, Rosimeire Barboza

; Freitas, Marta

; Cruz, Cosme Damião

; Vivas, Marcelo

Crop Breeding and Applied Biotechnology

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2023, Volume 23 Nº 3 elocation e44642333

Resumo: En | Texto: En | PDF: En

Abstract The hybrids UENF N01, N02 and N03 have enhanced nitrogen-use efficiency, particularly in terms of N responsiveness, which makes them ideal for low-input cultivation. Even under abiotic stress, popping expansion is not reduced, indicating these hybrids for growth in the N and NW of Rio de Janeiro State. N01 N0 nitrogenuse nitrogen use efficiency responsiveness lowinput low input cultivation stress reduced State

https://doi.org/10.1590/1984-70332023v23n3c26

Adaptability and stability of corn hybrids for the south of the Amazon biome via GGE biplot
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Lima, Joameson Antunes

; Rossi, Ana Aparecida Bandini

; Santos, Talles de Oliveira

; Penna, Guilherme Ferreira

; Tardin, Flávio Dessaune

; Trindade, Roberto dos Santos

; Guimarães, Paulo Evaristo de Oliveira

; Godinho, Vicente de Paulo Campos

; Amaral Junior, Antônio Teixeira do

; Cordeiro, Angelo Gabriel Mendes

; Santos, Renan Colavite dos

; Jesus, Marry Suelly Ferreira de

; Pogalsky, Letícia de Souza

; Tiago, Auana Vicente

; Pedri, Eliane Moreno de

; Ferreira, Edimilson Leonardo

; Zanetti, Géssica Tais

Pesquisa Agropecuária Brasileira

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2023, Volume 58 elocation e02931

Resumo: En Pt | Texto: En Pt | PDF: En | PDF: Pt

Abstract The objective of this work was to select maize hybrids using the GGE biplot analysis, as well as to evaluate their stability and adaptability in different environments of the North and Midwest regions of Brazil. Thirty-six maize hybrids were evaluated in 2018, in the following five environments in the Northern and Midwestern regions, respectively: in the municipality of Vilhena, in the state of Rondônia; and in the municipalities of Sorriso, Sinop, Alta Floresta, and Carlinda, in the Northern region of the state of Mato Grosso. The experimental design was a randomized complete block design. The analysis of variance was performed, and adaptability and stability were estimated by the GGE biplot method based on grain yield performance. A significant interaction between genotypes and environments was detected, and the biplot analysis was efficient in explaining 62.74% of the total variation in the first two principal components, with the formation of three macroenvironments. The 1P2227, 'BRS 3042', and 1P2265 hybrids showed high yield, responsiveness, and stability in the evaluated environments. The DKB310VTPRO2 hybrid was the most unstable genotype. The recommended hybrids are: DKB310 for the Sorriso and Vilhena macroenvironment; 1M1810 and 1O2106 for the Carlinda environment; and 1M1807 for the Sinop environment. Brazil Thirtysix Thirty six 2018 respectively Rondônia Floresta Grosso performed performance detected 6274 62 74 62.74 components macroenvironments 1P2227 P BRS 3042, 3042 , 3042' 1P226 responsiveness DKBVTPRO DKB VTPRO DKB310VTPRO genotype are DKB31 macroenvironment M 1M181 O 1O210 environment 1M180 201 627 6 7 62.7 1P222 304 1P22 DKB3 1M18 1O21 20 62. 30 1P2 1M1 1O2 2 3 1P 1M 1O

Resumo O objetivo deste trabalho foi selecionar híbridos de milho, por meio da análise GGE biplot, bem como avaliar sua estabilidade e adaptabilidade em diferentes ambientes das regiões Centro-Oeste e Norte do Brasil. Trinta e seis híbridos de milho foram avaliados em 2018, nos seguintes cinco ambientes das regiões Norte e Centro-Oeste, respectivamente: no município de Vilhena, no estado de Rondônia; e nos municípios de Sorriso, Sinop, Alta Floresta e Carlinda, na região norte do estado de Mato Grosso. O delineamento experimental foi em blocos completos ao acaso. Realizou-se a análise de variância, e estimaramse a adaptabilidade e a estabilidade pelo método GGE biplot com base na produtividade. Detectou-se interação significativa entre genótipos e ambientes, e a análise biplot foi eficiente para explicar 62,74% da variação total nos dois primeiros componentes principais, com a formação de três macroambientes. Os híbridos 1P2227, 'BRS 3042' e 1P2265 apresentam alta produtividade, capacidade de resposta e estabilidade nos ambientes avaliados. O híbrido DKB310VTPRO2 foi o genótipo mais instável. Os híbridos recomendados são: DKB310 para o macroambiente Sorriso e Vilhena; 1M1810 e 1O2106 para o ambiente Carlinda; e 1M1807 para o ambiente Sinop. CentroOeste Centro Oeste Brasil 2018 CentroOeste, Oeste, respectivamente Vilhena Rondônia Sinop Carlinda Grosso acaso Realizouse Realizou se variância produtividade Detectouse Detectou 6274 62 74 62,74 principais macroambientes 1P2227 P BRS 3042 1P226 DKBVTPRO DKB VTPRO DKB310VTPRO instável são DKB31 M 1M181 1O210 1M180 201 627 6 7 62,7 1P222 304 1P22 DKB3 1M18 1O21 20 62, 30 1P2 1M1 1O2 2 3 1P 1M 1O

https://doi.org/10.1590/s1678-3921.pab2023.v58.02931

Prospecting of popcorn inbred lines for nitrogen use efficiency and responsiveness1 responsiveness
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Souza, Yure Pequeno de

; Amaral Junior, Antônio Teixeira do

; Oliveira, Fábio Tomaz de

; Khan, Shahid

; Santos, Juliana Saltires

; Kamphorst, Samuel Henrique

Revista Ceres

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2023, Volume 70 Nº 6 elocation e70614

Resumo: En | Texto: En | PDF: En

ABSTRACT Large amounts of nitrogen (N) fertilizers applied to maize cropping systems support high yields but cause adverse environmental impacts. The development of cultivars with higher N use efficiency is essential to maintain sustainable production. Thus, the present study aimed to select popcorn inbred lines efficient and responsive to N fertilization expressing high popping expansion. Fifty-one popcorn inbred lines from different origins were evaluated in the field under low and high N availability, arranged in a randomized complete block design with three replications. The two main traits of economic interest in the crop were evaluated: grain yield (GY) and popping expansion (PE). A joint analysis of variance was performed and a scatter plot was generated to classify the inbred lines regarding the response to the N use, focusing on GY. For PE, a Scott-Knott grouping of means was conducted. Within the panel of evaluated popcorn inbred lines, it was possible to identify sources of favorable alleles for nitrogen use efficiency and popcorn expansion, highlighting the inbred lines L205, L206, L217, and L395. These genotypes emerge as potential parents to be included in mating blocks for the development of hybrids and/or breeding populations with high nitrogen use efficiency and popping expansion. (N impacts production Thus Fiftyone Fifty one availability replications GY (GY PE. PE . (PE) ScottKnott Scott Knott conducted L205 L L206 L217 L395 andor or (PE L20 L21 L39 L2 L3

https://doi.org/10.1590/0034-737x202370060014

Can nutritional aspects of Crambe abyssinica be modulated by phosphorus supply and water availability?
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Colodetti, Tafarel Victor

; Tomaz, Marcelo Antonio

; Rangel Rodrigues, Rogério

; Nunes Rodrigues, Wagner

; Deleon Martins, Lima

; Batista Brinate, Sebastião Vinícius

; Reis, Edvaldo Fialho dos

; Amaral, José Francisco Teixeira do

Idesia (Arica)

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Jun 2021, Volume 39 Nº 2 Páginas 7 - 16

Resumo: En Es | Texto: En Es | PDF: En | PDF: Es

ABSTRACT Phosphorus is a major limiting nutrient for crops in tropical regions. In addition, another major challenge for the future agriculture will be to maintain water levels in the soil to ensure satisfactory crop development. This study inserted in this context aimed to evaluate the conditioning caused by phosphorus fertilization and water availability in the soil over the biomass production and nutritional efficiency of plants of crambe (Crambe abyssinica Hochst). To this end, the experiment was conducted in a greenhouse, with four levels of phosphorus fertilization and three levels of water availability, along of 45 days, in order to obtain information about the production of biomass, nutritional contents, and the patterns of the nutritional efficiency of crambe plants. The results show that increasing the phosphorus supply in the soil promotes greater biomass production in crambe plants. In addition, the increase in water availability and levels of phosphorus fertilization near the recommended level promotes greater nutritional efficiencies in absorb, translocate and use the phosphorus available in the soil.

RESUMEN La disponibilidad de agua y fósforo es una limitante para los cultivos en las regiones tropicales. El objetivo de este estudio fue evaluar el efecto de la fertilización fosfatada y la disponibilidad de agua en el suelo sobre la producción de biomasa y la eficiencia nutricional de las plantas de crambe (Crambe abyssinica Hochst). Las plantas fueron cultivadas en un invernadero, con cuatro niveles de fertilización de fósforo y tres niveles de disponibilidad de agua, para estudiar el comportamiento vegetativo entre emergencia y floración. Se evaluó la biomasa, contenido nutricional y patrones de eficiencia nutricional de las plantas. Los resultados muestran un aumento de biomasa al fertilizar con fósforo. Se observa un efecto sinérgico al aumentar la disponibilidad de agua y fósforo, mejorando la eficiencia en la absorción del fósforo disponible en el suelo.

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O ensino de graduação em enfermagem durante a pandemia da COVID-19
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Araújo, Agostinho Antônio Cruz

; Amaral, Jackeline Vieira

; Araujo Filho, Augusto Cezar Antunes de

; Nunes, Benevina Maria Vilar Teixeira

Revista Cuidarte

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Abr 2021, Volume 12 Nº 1 elocation e1290

Resumo: Pt | Texto: Pt | PDF: Pt

https://doi.org/10.15649/cuidarte.1290 6 downloads

Combining abilities analysis for ear rot resistance in popcorn hybrids development
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Almeida, Rafael Nunes de

; Vivas, Marcelo

; Santos Junior, Divino Rosa dos

; Saluci, Júlio Cesar Gradice

; Carlos, Mayara Cazadini

; Santos, Juliana Saltires

; Amaral Júnior, Antônio Teixeira do

; Scapim, Carlos Alberto

Revista Ceres

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Fev 2021, Volume 68 Nº 1 Páginas 61 - 70

Resumo: En | Texto: En | PDF: En

ABSTRACT Ear rot caused by fungi of genus Fusarium (FER) is one of the potentially harmful diseases to grain quality in maize. Given the capacity to produce mycotoxins, FER presents a risk to food safety. This study sought to identify parents and indicate hybrids of popcorn with a higher level of resistance to the incidence and severity of FER. Hybrids were produced from the crossing of 15 lines in S7 generation and 5 testers. The hybrids, together with the parents and five more genotypes used as control, were evaluated in a field trial. It was used a randomized block design arranged in 10 x 10 lattice. Data were submitted to analysis of variance by the F test (p < 0.05) and then by the mean grouping test of Scott Knott (p < 0.05). The results showed the possible to explore new sources of resistance to FER among germplasm evaluated. Both additive and non-additive gene effects are important in FER resistance. To obtain gains in FER resistance, the development of popcorn hybrids should consider the use of parental lines with low means of severity and good general combining ability.

https://doi.org/10.1590/0034-737x202168010008 321 downloads

Posicionamento sobre o Consumo de Gorduras e Saúde Cardiovascular – 2021
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Izar, Maria Cristina de Oliveira

; Lottenberg, Ana Maria

; Giraldez, Viviane Zorzanelli Rocha

; Santos Filho, Raul Dias dos

; Machado, Roberta Marcondes

; Bertolami, Adriana

; Assad, Marcelo Heitor Vieira

; Saraiva, José Francisco Kerr

; Faludi, André Arpad

; Moreira, Annie Seixas Bello

; Geloneze, Bruno

; Magnoni, Carlos Daniel

; Scherr, Carlos

; Amaral, Cristiane Kovacs

; Araújo, Daniel Branco de

; Cintra, Dennys Esper Corrêa

; Nakandakare, Edna Regina

; Fonseca, Francisco Antonio Helfenstein

; Mota, Isabela Cardoso Pimentel

; Santos, José Ernesto dos

; Kato, Juliana Tieko

; Beda, Lis Mie Masuzawa

; Vieira, Lis Proença

; Bertolami, Marcelo Chiara

; Rogero, Marcelo Macedo

; Lavrador, Maria Silvia Ferrari

; Nakasato, Miyoko

; Damasceno, Nagila Raquel Teixeira

; Alves, Renato Jorge

; Roberta Soares, Lara

; Costa, Rosana Perim

; Machado, Valéria Arruda

Arquivos Brasileiros de Cardiologia

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Jan 2021, Volume 116 Nº 1 Páginas 160 - 212

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

https://doi.org/10.36660/abc.20201340 9969 downloads

Novel approach to the selection of Psidium guajava genotypes using latent traits to bypass multicollinearity
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Silva, Flavia Alves da

; Correa, Caio Cezar Guedes

; Carvalho, Beatriz Murizini

; Viana, Alexandre Pio

; Preisigke, Sandra da Costa

; Amaral Júnior, Antônio Teixeira do

Scientia Agricola

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2021, Volume 78 Nº 2 elocation e20190081

Resumo: En | Texto: En | PDF: En

ABSTRACT: Multicollinearity is a very common problem in studies that employ path analysis in agronomic crops, which generates unrealistic results and erroneous interpretations. This study was aimed at assessing the path analysis in data obtained from guava tree full-sib based on modelling multiple regressions applying latent variables to neutralize the effects of multicollinearity. Seven explanatory variables were measured – fruit mass (FM), fruit length (FL), fruit diameter (FD), mesocarp thickness (MT), peel thickness (PT), pulp mass (PM), total number of fruits (NTF) –, plus the main dependent variable, total yield per plant (YIELD). In accordance with the multicollinearity scenario, eleven values were tested with the addition of the constant K to the diagonal of the correlation matrix X’X. Path analysis was applied in two models: all the explanatory variables with direct effect on the dependent one and another model with multiple regression with more than one chain and the presence of latent variables. The path analysis in the multivariate methodology of structural equation modelling (SEM), which uses latent variable prediction, provided better results than the traditional and ridge path analyses.

https://doi.org/10.1590/1678-992x-2019-0081 473 downloads

10.

Combining ability and genetic divergence among tropical maize inbred lines using SSR markers
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Eisele, Tauana Gibim

; Lazzari, Dener

; Silva, Tereza Aparecida da

; Pinto, Ronald José Barth

; Matsuzaki, Robson Akira

; Maioli, Maria Fernanda de Souza Dias

; Alves, Alex Viana

; Amaral Junior, Antônio Teixeira do

Acta Scientiarum. Agronomy

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2021, Volume 43 elocation e53317

Resumo: En | Texto: En | PDF: En

ABSTRACT. Our objectives were to evaluate general and specific combining ability (SCA) and genetic divergence among tropical maize inbred lines using single sequence repeat (SSR) markers. Thirteen inbred lines were crossed based on a complete diallel scheme. Hybrids and three checks were evaluated in a lattice experimental design. Silk and anthesis flowering, average plant height, average ear height, white spot (Pantoea ananatis) and gray leaf spot (Cercospora zeae-maydis) severity, and grain yield were evaluated. Significant differences (p < 0.05) for general and specific combining abilities were observed for all traits. Based on additive effects, inbred lines 1 (Flash) and 12 (SG 6015) were selected to reduce the flowering period and plant and ear height. Inbred lines 2 (CD 303) and 3 (AG 8080) were selected to reduce disease severity. For the simultaneous increase in grain yield and reduced severity of diseases, line 11 (AG 9090) as a parent or tester in topcross schemes is recommended. According to non-additive effects, crosses 2 (CD 303) × 13 (DKB 747) and 11 (AG 9090) × 12 (SG 6015) were selected for grain yield and future breeding programs. Six groups were identified using SSR markers; a major group contained six inbred lines. Because of the minor relationship between genetic divergence and SCA effects on grain yield limits, the use of the groups for future divergent crosses is recommended.

https://doi.org/10.4025/actasciagron.v43i1.53317 108 downloads

11.

Combined selection for adaptability, genotypic stability and cowpea yield from mixed models
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Cruz, Derivaldo Pureza da

; Gravina, Geraldo de Amaral

; Vivas, Marcelo

; Entringer, Geovana Cremonini

; Souza, Yure Pequeno de

; Rocha, Richardson Sales

; Jaeggi, Mário Euclides Pechara da Costa

; Albuquerque, Dalcirlei Pinheiro

; Amaral Junior, Antônio Teixeira do

; Gravina, Lília Marques

; Rocha, Maurisrael de Moura

; Silva, Rita de Kássia Guarnier da

Ciência Rural

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2021, Volume 51 Nº 9 elocation e20200540

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO: A expressão potencial da produtividade das culturas constitui um desafio constante aos criadores de plantas frente às oscilações das variáveis ambientais, dificultando a seleção e onerando os custos operacionais e metodológicos na obtenção da cultivar ideal para determinada região. O objetivo do trabalho foi investigar os efeitos da interação genótipos x ambientes na seleção de linhagens de feijão-caupi com alta produtividade de grãos, adaptabilidade e estabilidade genotípica simultaneamente, em ambientes da região Noroeste do estado do Rio de Janeiro, usando modelos mistos (Máximo Verosimilhança Restrita - REML/Melhor Predição Linear não Viesado - BLUP). Avaliou-se 27 genótipos de feijão-caupi em seis ambientes pela combinação de local (Cambuci-RJ e Bom Jesus do Itabapoana-RJ) e ano (2016, 2017 e 2018). Foi utilizado o delineamento em blocos casualizados com quatro repetições. Os parâmetros genéticos foram estimados via procedimento REML/BLUP, e a seleção baseou-se no método da média harmônica do desempenho relativo dos valores genéticos (HMRPGV). Observou-se diferença significativa para ambiente e interação genótipo x ambiente. A variância residual e a variância da interação genótipo x ambiente formaram as maiores frações da variância fenotípica. As linhagens 4 (Bico-de-ouro 1-5-24), 6 (Pingo-de-ouro 1-5-4), 5 (Pingo-de-ouro 1-5-26) e 9 (Pingo-de-ouro 1-5-8) foram classificadas como superiores quanto a estabilidade e adaptabilidade e rendimento de grãos pelo critério da HMRPGV. As cultivares comerciais 13 (BRS-Tumucumaque) e 26 (BRS-Itaim) reuniram elevada produtividade de grãos, adaptabilidade e estabilidade específica nas condições edafoclimáticas avaliadas.

ABSTRACT: The potential expression of crop productivity is a constant challenge for plant breeders in the face of oscillations in environmental variables, making selection difficult and increasing the operational and methodological costs in obtaining the ideal cultivar for a determined region. The objective of the research was to investigate the effects of genotype x environment interaction in the selection of cowpea lines with high grain yield, adaptability, and genotypic stability simultaneously, in environments of the Northwest region of Rio de Janeiro State, using mixed models (Maximum Restricted Likelihood - REML/Best Linear Unbiased Prediction - BLUP). 27 cowpea genotypes were evaluated in six environments by combining location (Cambuci-RJ and Bom Jesus do Itabapoana-RJ) and year (2016, 2017 and 2018). A randomized block design with four replications was performed. The genetic parameters were estimated via the REML/BLUP procedure, and the selection was based on the harmonic mean method of the relative performance of the genetic values (HMRPGV). A meaningful difference was observed for environment and genotype x environment interaction. The residual variance and the variance of the genotype x environment interaction formed the most significant fractions of the phenotypic variance. Lines 4 (Bico-de-ouro 1-5-24), 6 (Pingo-de-Ouro 1-5-4), 5 (Pingo-de-Ouro 1-5-26), and 9 (Pingo-de-Ouro 1-5-8), stood out as superior in terms of stability and adaptability and grain yield by HMRPGV. Commercial cultivars 13 (BRS-Tumucumaque) and 26 (BRS-Itaim) had high grain yield, adaptability, and specific stability in the evaluated edaphoclimatic conditions.

https://doi.org/10.1590/0103-8478cr20200540 105 downloads

12.

Nutritional characteristics of conilon coffee genotypes grown in transition altitude with water management in soil
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Salles, Rodrigo Amaro de

; Jordaim, Renan Baptista

; Colodetti, Tafarel Victor

; Rodrigues, Wagner Nunes

; Amaral, José Francisco Teixeira do

; Tomaz, Marcelo Antonio

Ciência e Agrotecnologia

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2021, Volume 45 elocation e013721

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO A modificação do manejo hídrico na cultura do café Conilon (Coffea canephora) pode ser uma estratégia para melhorar a eficiência do manejo nutricional e garantir um melhor aproveitamento por parte dos genótipos para região de altitude de transição. O objetivo do estudo foi avaliar as características nutricionais de 27 genótipos de C. canephora, submetidos a dois manejos de água no solo, visando identificar genótipos que apresentam evidências de maiores teores foliares, exportações e potencial de reciclagem de nutrientes em seus ramos produtivos. O experimento foi conduzido em esquema de parcelas subdividida, em delineamento de blocos casualizados, com três repetições. Os tratamentos consistiram nos 27 genótipos de C. canephora e dois manejos de água no solo (“Irrigado” e “Suprido apenas pela chuva”). Foram avaliados os teores nutricionais foliares, os conteúdos nutricionais exportados pelos frutos e os conteúdos nutricionais potencialmente recicláveis após a poda (folhas e caule dos ramos plagiotrópicos), dos macronutrientes: nitrogênio, fósforo, potássio, cálcio e magnésio. Houve diferenciação entre os genótipos para todas as características avaliadas em ambos os manejos de água no solo. Porém, houve formação de um maior número de grupos homogêneos entre os genótipos no manejo irrigado. Os genótipos apresentaram distinção nas características nutricionais em resposta aos manejos de água no solo. Os genótipos 108 e 302 acumularam maiores conteúdos nutricionais exportado pelos frutos, independentemente do manejo de água no solo.

ABSTRACT The modification of water management in the Conilon coffee (Coffea canephora) crop is a possible strategy to improve nutritional management efficiency and ensure better use of the genotypes for regions of transitional altitude. The objective of this study was to evaluate the nutritional characteristics of 27 genotypes of C. canephora and submit them to two water management schemes in soil. The goal was to find evidence of higher leaf contents, exports, and nutrient recycling potential in the productive branches of various genotypes. The experiment was carried out in a randomized block design with three replications in a split-plot scheme. The treatment consisted of 27 genotypes of C. canephora and two water management schemes in soil (“Irrigated” and “Rainfed”). Nutritional content in leaves, exported by fruits, and pruned (leaves and stem of plagiotropic branches) recyclable contents were evaluated for nitrogen, phosphorus, potassium, calcium, and magnesium. Variations were observed among genotypes for all the parameters evaluated in both water management in soil. However, significant homogeneous groups were formed among the genotypes in the irrigated management. Furthermore, the genotypes showed distinct nutritional characteristics in response to water management in the soil. Genotypes 108 and 302 had higher nutritional content and were exported by fruits, regardless of soil water management.

https://doi.org/10.1590/1413-7054202145013721 1 downloads

13.

Overall heritability in popcorn estimated by meta-analysis
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Clóvis, Luiz Rafael

; Pinto, Ronald José Barth

; Uhdre, Renan Santos

; Rosa, Jocimar Costa

; Zeni Neto, Hugo

; Vivas, Marcelo

; Amaral Júnior, Antônio Teixeira do

Acta Scientiarum. Agronomy

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2021, Volume 43 elocation e53721

Resumo: En | Texto: En | PDF: En

ABSTRACT The objective of this study was to conduct a meta-analysis and test its efficiency in summarizing the heterogeneous data of heritability estimates for the traits of grain yield (GY) and popping expansion (PE), and to provide reliable estimates of selection gains in popcorn. Therefore, 97 heritability estimates (ĥ 2) for popcorn GY and PE in the broad and narrow sense were used. The main procedures underlying the estimation of the combined heritability (ĥ 2 + ) using the technique of meta-analysis consisted of i) an exploratory analysis of the set of heritability estimates to detect outliers using a box-plot chart, ii) the verification of the required statistical assumptions, iii) testing the involved heritability estimates for homogeneity, and iv) the calculation of the estimates of combined heritability. The meta-analysis facilitated the synthesis of the information pertaining to heritability in popcorn. The combined heritability estimates (ĥ 2 + ) in the broad sense for GY and PE were 0.5208 ± 0.0229 and 0.6356 ± 0.0209, respectively, and in the narrow sense were 0.3290 ± 0.0292 and 0.3083 ± 0.0298, respectively.

https://doi.org/10.4025/actasciagron.v43i1.53721 51 downloads

14.

UENF WS01: popcorn hybrid with water use efficiency for the State of Rio de Janeiro
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Lima, Valter Jário de

; Amaral Júnior, Antônio Teixeira do

; Kamphorst, Samuel Henrique

; Santos, Adriano dos

; Schmidt, Katia Fabiane Medeiros

; Azeredo, Valdinei Cruz

; Leite, Jhean Torres

; Santos Junior, Divino Rosa dos

; Santos, Talles de Oliveira

; Bispo, Rosimeire Barboza

; Carvalho, Carolina Macedo

; Souza, Yure Pequeno de

; Oliveira, Fabio Tomaz de

; Chaves, Marcelo Moura

; Oliveira, Uéliton Alves de

; Mafra, Gabrielle Sousa

; Santos, Pedro Henrique Araújo Diniz

Crop Breeding and Applied Biotechnology

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2021, Volume 21 Nº 4 elocation e375821411

Resumo: En | Texto: En | PDF: En

Abstract The UENF WS01 is a hybrid that has an early cycle and high grain yield capacity under low water and nitrogen availability. It maintains popping expansion even under abiotic stress, thus being recommended for cultivation in the North and Northwest of the State of Rio de Janeiro.

https://doi.org/10.1590/1984-70332021v21n4c60

15.

Diallel analysis of popcorn populations for yield, popping expansion and resistance to fall armyworm
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Peterlini, Edicarlos

; Pinto, Ronald José Barth

; Scapim, Carlos Alberto

; Rizzardi, Diego Ary

; Bertagna, Filipe Augusto Bengosi

; Amaral Júnior, Antônio Teixeira do

Revista Ceres

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Ago 2020, Volume 67 Nº 4 Páginas 288 - 295

Resumo: En | Texto: En | PDF: En

ABSTRACT The objective of this study was to estimate the varietal and heterotic effects related to grain yield, popping expansion and resistance of popcorn against fall armyworm. Twelve open-pollinated varieties were intercrossed in a complete diallel mating scheme. The 66 experimental hybrids, together with their parents and controls Zapalote Chico, BRS 1030 and IAC 125, resulted in a total of 81 treatments, evaluated in an experiment in a 9x9 triple-square lattice design, in Maringá-PR and Araruna-PR. The data were analyzed according to the diallel model of Gardner and Eberhart (1966). The following traits were evaluated: grain yield (GR); mean plant height (PH) and insertion height of the highest ear in the stem (EI); silking (SIL); final plant density (FD) and popping expansion (PE). Variety PR 023 is indicated for intrapopulation improvement for grain yield. Regarding popping expansion, the results indicated cross SAM x UNB 2U C5 for recurrent reciprocal selection. In relation to resistance to fall armyworm, the varieties PARA 172, PA 091, PR 023, and SE 013 were selected for intrapopulation improvement. On the other hand, the crosses PARA 172 x BOZM 260, PA 091 x BOYA 462 and SAM x UNB 2U C5 can be indicated for interpopulation improvement.

https://doi.org/10.1590/0034-737x202067040006 414 downloads

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