RESUMO O iodo (I) é um micronutriente crucial para a saúde humana, pois sua ingestão insuficiente pode levar a diversos problemas de saúde, como disfunção da tireoide. Embora não seja essencial para plantas terrestres, I pode atuar como bioestimulante em concentrações adequadas, promovendo boa produtividade das culturas e alterações no metabolismo. Este estudo teve como objetivo investigar os efeitos da pulverização foliar de I na produtividade do melão, compostos antioxidantes e seu acúmulo nos frutos. O experimento envolveu a aplicação de diferentes doses de I (0, 5, 10, 15 e 20 µM/L) a cada 15 dias após o transplante. Os resultados mostraram que baixas doses de I (5 µM/L) melhoraram o rendimento e a qualidade comercial do melão, enquanto altas doses (20 µM/L) diminuíram o rendimento e a qualidade comercial, mas aumentou a biossíntese de compostos bioativos e I nos frutos. Portanto, a biofortificação de plantas é uma técnica importante para aumentar as concentrações de I nas culturas e produzir alimentos funcionais com potenciais benefícios à saúde. (I humana tireoide terrestres adequadas metabolismo melão frutos 0, 0 (0 5 10 1 2 µM/L µML µM L transplante ( (2 Portanto

ABSTRACT Iodine (I) is a crucial micronutrient for human health, as its insufficient intake can lead to various health problems, such as thyroid dysfunction. Although not essential for terrestrial plants, I can act as a biostimulant at appropriate concentrations, promoting good crop productivity and metabolism changes. This study aimed to investigate the effects of foliar spray of I on melon yield, antioxidant compounds, and their accumulation in fruits. The experiment involved applying different doses of I (0, 5, 10, 15, and 20 µM/L) every 15 days after transplanting. Results showed that low doses of I (5 µM/L) improved melon yield and commercial quality, while high doses (20 µM/L) decreased yield and commercial quality, but increased the biosynthesis of bioactive compounds and I on the fruits. Therefore, plant biofortification is an important technique to increase I concentrations in crops and produce functional foods with potential health benefits. (I problems dysfunction plants changes fruits 0, 0 (0 5 10 2 µM/L µML µM L 1 transplanting ( quality (2 Therefore benefits

Related to the characterization of plant parasitic nematodes halófita Salicornia bigelovii (Torr.) In northwestern Mexico, studies are zero, which motivated this research to the isolation and characterization of nematodes associated with Salicornia. Two systematically sampled in ten locations in two areas (Puerto Peñasco and Bahía de Kino, Sonora), which develops naturally in the halophyte study was developed; samplings were made at intervals of two months for 11 months corresponding to the phenology of the plant. Sampling depth levels of 0-50 and 50-100 cm was considered to study the nematode population. The collected samples were processed to homogenize the sample and taking subsamples of 500 g; subsamples were processed by sieving and centrifugation; aliquots for fication and identification were collected. Were collected and identified eight genera of plant parasitic nematodes; including the most abundant were Tylenchus, Helicotylenchus, Merlinius and Criconematidos. Their populations varied in relation to the ecotype, soil type, soil depth and season.

Estudios relacionados con la caracterización de nemátodos fitoparásitos de la halófita Salicornia bigelovii (Torr.) en el noroeste de México, son nulos, lo que motivó esta investigación al aislamiento y caracterización de nemátodos asociados a Salicornia. Se desarrollaron dos muestreos sistemáticos en diez localidades de dos áreas (Puerto Peñasco y Bahía de Kino, Sonora), donde se desarrolla en forma natural la halófita en estudio; los muestreos se hicieron con una periodicidad de dos meses durante 11 meses que corresponde a la fenología de la planta. Se consideró una profundidad de muestreo en niveles de 0-50 y 50-100 cm para estudiar la población de nemátodos. Las muestras colectadas se procesaron al homogenizar la muestra y tomándose submuestras de 500 g; las submuestras fueron procesadas mediante un tamizado y centrifugación; se colectaron alícuotas para su cuantificación e identificación. Se colectaron e identificaron ocho géneros de nemátodos fitoparásitos; entre ellos los más abundantes fueron Tylenchus, Helicotylenchus, Merlinius y Criconematidos. Sus poblaciones variaron en relación con el ecotipo, tipo de terreno, profundidad del suelo y época del año.

The objective of this study was to evaluate the effect of a film based on hydroxypropylmethyl cellulose (HPMC) and paraffin on chilling injury index (IDF), weight loss, the lipase enzyme activity and composition of the internal atmosphere in Cantaloupe melon (Cucumismelo). The whole melon covered [PEL], and not covered [control]) were stored at 8 °C (80% RH) for 20 days, and evaluated at 0, 4, 8, 12, 16 and 20 days of storage. PEL melons had less chilling injury index (IDF= 1.25), and higher concentrations of CO2 (5.1-11.8%) and ethylene (45.0-200.0 ppm) in the internal space of the fruit than the not covered melons (p< 0.05 ) during storage at 8 °C. The results indicate that the application of a cover of HPMC-paraffine reduces 50% chilling injury in whole melon minimally processed stored in refrigeration for 20 days, contributing to the preservation of fruit quality.

El objetivo del presente estudio fue evaluar el efecto de una película a base de hidroxipropilmetil celulosa y parafina sobre el índice de daños por frío (IDF), pérdida de peso, actividad enzimática de la lipasa y composición de la atmósfera interna del fruto en melón Cantaloupe (Cucumis melo). Los frutos de melón enteros cubiertos [PEL], y no cubiertos [control]) fueron almacenados a 8 ºC (80% HR) por 20 días, y evaluados a los 0, 4, 8, 12, 16 y 20 días de almacenamiento. Los melones PEL tuvieron menor índice de daños por frío (IDF= 1.25), y mayor concentración de CO2 (5.1-11.8 %) y etileno (45.0-200.0 ppm) en el espacio interno del fruto que los melones no cubiertos (p< 0.05) durante el almacenamiento a 8 ºC. Los resultados señalan que la aplicación de la cubierta de hidroxipropilmetil celulosa-parafina reduce 50% los daños por frío en melón Cantaloupe entero mínimamente procesado almacenado en refrigeración por 20 días, contribuyendo a la conservación de la calidad de este fruto.