Plant breeding, associated with other areas, as well as the registration and protection of cultivars, have brought relevant contributions to turn soybean into one of the most important crops for the Brazilian agribusiness. Potential additional soybean descriptors for cultivar protection purposes such as the length of the hypocotyl and epicotyl have been reported in the literature. Thus, the objective of this work was to study the effect of soil volume, plant density per pot and crop and cultivar depth on the length of the hypocotyl and epicotyl and the height of soybean seedlings. The study conducted 4 experiments, in which the length of the hypocotyl and epicotyl and the height of soybean seedlings were evaluated at the V2 and V3 stages. Experimental units were submitted to pots with three volumes of soil (1, 2 or 3 dm3), three quantities of plants per pot (1, 2 or 3), three sowing depths (1, 2 or 3 cm) and four cultivars [TMG 4185, BRSMG 68 (Vencedora), BRS 7980, BRS 8381]. Results showed that soil volume, plant density and sowing depth had no effect on hypocotyl length evaluated at the V2 stage and that sowing depth had no effect on epicotyl length. However, soil volume, plant density, sowing depth and cultivar variations had an influence on plant height, and the soybean cultivars showed distinguishability for hypocotyl and epicotyl length at the V2 and V3 stages, being considered potential soybean descriptors.
Objetivou-se identificar diferença entre grupos de cultivares, estudar o efeito da profundidade de semeadura sobre o diâmetro do hipocótilo e o comportamento do diâmetro do hipocótilo ao longo do desenvolvimento das plantas de soja. Para isto analisou-se cultivares de soja em estádio inicial de desenvolvimento, em condições de casa de vegetação, quanto ao diâmetro do hipocótilo em dois sentidos: COTsentido dos cotilédones e OPCOTsentido oposto aos cotilédones. Os dados foram analisados por meio da análise de variância, teste de médias (Tukey ou Scott-Knott), regressão e correlação fenotípica e genotípica. E, estimados o coeficiente de variação e coeficiente de determinação genotípica. Verificou-se que as cultivares de soja se diferenciam quanto ao diâmetro do hipocótilo e identificou-se grande influência genética em detrimentos aos efeitos ambientais. Semeadura de 1 à 3 cm de profundidade não influenciou o diâmetro do hipocótilo, avaliados nos estádios V2 e V3, ao analisar plantas das cultivares TMG 4185, BRSMG 68 [Vencedora], BRS 7980 e BRS 8381. As cultivares 98Y30, TMG1174RR e TMG 4185 apresentaram comportamento semelhantes quanto ao diâmetro do hipocótilo no período de 0 à 48 dias após o estádio de desenvolvimento V1.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.