aspectos químicos e estruturais da qualidade fisiológica de sementes de soja chemical and structural aspects of the physiological quality of soybean seeds
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2009
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Abstract
O objetivo deste trabalho foi avaliar os efeitos gênicos aditivos e não aditivos para as características da espessura das camadas da testa e da lignina presente nessas camadas, e verificar se os caracteres utilizados para avaliação da qualidade fisiológica das sementes de soja se correlacionam com o teor de lignina do tegumento. Foram usadas três cultivares (M-Soy 8400, CD201, CD206) de alta e três (CD215, CD202, Savana) de baixa qualidade fisiológica, para se obterem sementes híbridas F1 e F2, inclusive os recíprocos, pelo sistema de cruzamento dialelo parcial e as linhagens parentais. Os parâmetros primeira contagem de germinação, contagem final de germinação e velocidade de germinação, utilizados para avaliação da qualidade fisiológica, podem ser correlacionados com o teor de lignina. Foram observadas correlações positivas entre o teor de lignina e a percentagem de plântulas normais no teste de envelhecimento ao 5º e 11º dias após a semeadura, com valores maiores de correlação no 5º dia. A correlação entre velocidade de germinação e teor de lignina foi negativa. A análise do dialelo apontou significância do efeito recíproco, o que indica que a espessura das camadas da testa e a espessura de lignina nessas camadas podem ser explicadas pelo efeito materno.
The objective of this work was to evaluate the additive and non-additive genetic effects for thickness of the seed coat layers and of the lignin present in them, and to verify if the characters used to evaluate the physiological quality of the seeds is correlated with the lignin content. Three cultivars (M-Soy 8400, CD201, CD206) with high and three (CD215, CD202, Savana) with low physiological quality were used to obtain F1 and F2 hybrid seeds, including the reciprocals, using partial diallel crosses and the parental lines. First germination count, final germination count and germination rate, used to evaluate the physiological quality, can be correlated with lignin content. Positive correlations were observed between lignin content and the percentage of normal seedlings in the aging test at the 5th and 11th days after sowing, with the highest correlation values at the 5th day. The correlation between germination rate and lignin content was negative. The diallel analysis showed reciprocal effect, showing that the thickness of the seed coat layers and of the lignin contained in these layers can be explained by maternal effect.
The objective of this work was to evaluate the additive and non-additive genetic effects for thickness of the seed coat layers and of the lignin present in them, and to verify if the characters used to evaluate the physiological quality of the seeds is correlated with the lignin content. Three cultivars (M-Soy 8400, CD201, CD206) with high and three (CD215, CD202, Savana) with low physiological quality were used to obtain F1 and F2 hybrid seeds, including the reciprocals, using partial diallel crosses and the parental lines. First germination count, final germination count and germination rate, used to evaluate the physiological quality, can be correlated with lignin content. Positive correlations were observed between lignin content and the percentage of normal seedlings in the aging test at the 5th and 11th days after sowing, with the highest correlation values at the 5th day. The correlation between germination rate and lignin content was negative. The diallel analysis showed reciprocal effect, showing that the thickness of the seed coat layers and of the lignin contained in these layers can be explained by maternal effect.
| Reference Key |
menezes2009pesquisaaspectos
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| Authors | ;Mariney de Menezes;Édila Vilela de Resende von Pinho;Solange Carvalho Barrios Roveri José;Alexana Baldoni;Flávia Ferreira Mendes |
| Journal | proc - the fourth ieee workshop on software technol for future embedded and ubiquitous syst, seus 2006 andthe second int workshop on collaborative comput, integr, and assur, wccia 2006 |
| Year | 2009 |
| DOI |
10.1590/S0100-204X2009001200022
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