Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/40614
Title: Controle genético, teor de lignina, caracterização ultraestrutural e qualidade de sementes de soja
Other Titles: Genetic control, lignin content, ultrastructural characterization and quality of soybean seeds
Authors: Von Pinho, Édila Vilela de Resende
Santos, Heloisa Oliveira dos
Carvalho, Everson Reis
Alves, Eduardo
Dias, Denise Cunha Fernandes
Keywords: Soja - Melhoramento genético
Soja - Sementes - Qualidade
Soja - Espessura do tegumento
Soybean - Genetic Improvement
Soybean - Seeds - Quality
Soybean - Coat thickness
Issue Date: 6-May-2020
Publisher: Universidade Federal de Lavras
Citation: CASTRO, E. de M. Controle genético, teor de lignina, caracterização ultraestrutural e qualidade de sementes de soja. 2020. 72 p. Tese (Doutorado em Agronomia/Fitotecnia)-Universidade Federal de Lavras, Lavras, 2020.
Abstract: Currently, in soybean improvement programs, the use of seeds with high physiological quality has been sought with several characteristics of interest. The objective of this work was to evaluate the physiological quality of the seeds from a partial diallel, to estimate the genetic tests useful for the breeding programs, to verify the importance of the maternal effect, to study the relationship between the physiological quality and thickness, lignin content and histochemical analysis on the coat. Previously selected soybean seeds were used, three with high quality (CD 201, CA 115, MS 8400) and three with low seed quality (CD202, Syn 1263, Syn1279), have been intercrossed using a partial diallel scheme. Seeds from these crosses were evaluated for seed physiological quality using germination tests, first germination count, accelerated aging test, emergency test and occurrence speed index. Lignin contents in coat were quantified and their thickness was measured in all coat layers using scanning electron microscopy. The most contrasting cultivars for the lignin was analyzed using microscopy of epi-fluorescence and histochemical techniques. The effects of general capacity (CGC) and specific combinations (CEC) and reciprocal effects were analyzed. There was a significant effect of the additive and dominant genes for seed quality characters, and a reciprocal effects pronounced that suggests the presence of the maternal effect. There is variation in physiological quality in relation to genotype, lignin content and coat thickness. However, a relationship between these characteristics and physiological quality is not conclusive. Lignin is more concentrated in the hilum region.
Description: Arquivo retido, a pedido da autora até abril 2022.
URI: http://repositorio.ufla.br/jspui/handle/1/40614
Appears in Collections:Agronomia/Fitotecnia - Doutorado (Teses)

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.