Relationship between pod permeability and seed quality in soybean

The aim of this study was to evaluate the influence of pod wall permeability on the physiological quality of soybean seed. The cultivars studied were Sant'Ana, FT-2, FT-10, Bossier, Davis and the breeding line F 84-7-30, with a black seed coat. Pods were collected from plants at the R4, R5, R6,...

Full description

Saved in:
Bibliographic Details
Published inJournal of seed science Vol. 36; no. 3; pp. 273 - 281
Main Authors Oliveira, Carolina Maria Gaspar de, Kryzanowski, Francisco Carlos, Oliveira, Maria Cristina Neves de, França-Neto, José de Barros, Henning, Ademir Assis
Format Journal Article
LanguageEnglish
Portuguese
Published ABRATES - Associação Brasileira de Tecnologia de Sementes 01.09.2014
Associação Brasileira de Tecnologia de Sementes
Subjects
Online AccessGet full text

Cover

Loading…
More Information
Summary:The aim of this study was to evaluate the influence of pod wall permeability on the physiological quality of soybean seed. The cultivars studied were Sant'Ana, FT-2, FT-10, Bossier, Davis and the breeding line F 84-7-30, with a black seed coat. Pods were collected from plants at the R4, R5, R6, R7 and R8 development stages, which composed the treatments in regard to time of harvest. The parameters of permeability and the lignin content of the pods and the seeds within the pods were evaluated. The seeds were collected just after full maturity (R8), and the following tests were performed: germination, electrical conductivity, and tetrazolium, which determined seed viability and vigor. A randomized complete block design in a split-plot in time arrangement was used, with four replications per treatment. The soybean genotypes (six) composed the plots, and the split-plots consisted of the development stages (R4, R5, R6, R7 and R8). In seed evaluation, the same design was used, reducing the number of treatments to three in the split-plots (R6, R7 and R8). Pod permeability varied with the genotype and stage of development; this affected seed vigor, but not the viability of newly-harvested seeds. The pod lignin content did not show any influence on pod permeability. O objetivo do trabalho foi avaliar a influência da permeabilidade da parede da vagem na qualidade fisiológica das sementes de soja. As cultivares utilizadas foram Sant'Ana, FT-2, FT-10, Bossier, Davis e a linhagem F 84-7-30 com tegumento na cor preto. Coletaram-se vagens nos estádios de desenvolvimento R4, R5, R6, R7 e R8, sendo que os mesmos compuseram os tratamentos quanto à época de coleta. Avaliaram-se a permeabilidade e o conteúdo de lignina das vagens e das sementes no interior das mesmas. As sementes para os estudos foram obtidas logo após a maturidade plena (R8), sendo avaliadas a germinação, a condutividade elétrica e a viabilidade e o vigor pelo teste de tetrazólio. O delineamento experimental na avaliação das vagens foi em blocos ao acaso com parcelas subdivididas, sendo nas parcelas genótipos de soja (seis) e nas subparcelas estádios de desenvolvimento (R4, R5, R6, R7 e R8) com quatro blocos. Na avaliação das sementes utilizou-se o mesmo delineamento reduzindo o número de tratamentos para 3 nas subparcelas (R6, R7 e R8). A permeabilidade da vagem variou com o genótipo e com o estádio de desenvolvimento, e influenciou o vigor das sementes, entretanto, sem afetar a viabilidade das sementes recém-colhidas. O conteúdo de lignina nas vagens não teve influência sobre a permeabilidade das mesmas.
ISSN:2317-1537
2317-1545
2317-1545
DOI:10.1590/2317-1545v36n3919