correlação e análise do coeficiente de trilha dos componentes do rendimento de sementes de grama-forquilha correlation and path coefficient analyses of seed yield components in the bahia grass (paspalum notatum flügge var. notatum)
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ID: 209781
2011
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Abstract
Objetivou-se com este trabalho, por meio de uma análise de trilha para rendimento de sementes de grama-forquilha (Paspalum notatum Flügge var. notatum), obter informações básicas para utilização em estratégias de manejo para maior produção de sementes e, consequentemente, maior ressemeadura natural, proporcionando, assim, condições para maior persistência da espécie na pastagem. Foram analisadas as seguintes variáveis: número de perfilhos vegetativos, número de perfilhos reprodutivos, número de racemos/inflorescência, número de sementes/inflorescência, peso de mil sementes e rendimento de sementes. A variável que mais se correlacionou com o rendimento de sementes foi o número de perfilhos reprodutivos (r = 0,94), e essa correlação se deu praticamente apenas pelo efeito direto dessa variável. Entre as demais variáveis, destacou-se o número de perfilhos vegetativos, com coeficiente de correlação de -0,83 e efeitos indiretos sobre os demais componentes do rendimento de sementes. O número de perfilhos reprodutivos parece ser a principal característica a ser considerada na busca de maior produção de sementes de Paspalum notatum.
The objective of this work was, through a path analysis of seed yield in Paspalum notatum, to obtain basic information for using in management strategies to improve seed production and consequently, high natural reseeding and a better persistence of the species in the pasture. The following variables were analyzed: number of vegetative tiller, number of reproductive tiller, number of raceme/inflorescence, number of seeds/inflorescence, weight of 1000 seeds and seed yield. The most correlated variable with seed yield was the number of reproductive tiller (r = 0.94), and this occurred because its direct effect. Among the other variables, number of vegetative tiller also had a high correlation coefficient (r = -0.83) and indirect effects on the other components. The number of reproductive tiller seems to be the main characteristic to be considered when searching for a higher seed production in Paspalum notatum.
The objective of this work was, through a path analysis of seed yield in Paspalum notatum, to obtain basic information for using in management strategies to improve seed production and consequently, high natural reseeding and a better persistence of the species in the pasture. The following variables were analyzed: number of vegetative tiller, number of reproductive tiller, number of raceme/inflorescence, number of seeds/inflorescence, weight of 1000 seeds and seed yield. The most correlated variable with seed yield was the number of reproductive tiller (r = 0.94), and this occurred because its direct effect. Among the other variables, number of vegetative tiller also had a high correlation coefficient (r = -0.83) and indirect effects on the other components. The number of reproductive tiller seems to be the main characteristic to be considered when searching for a higher seed production in Paspalum notatum.
| Reference Key |
lopes2011revistacorrelao
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|---|---|
| Authors | ;Rodrigo Ramos Lopes;Lúcia Brandão Franke |
| Journal | european journal of lipid science and technology |
| Year | 2011 |
| DOI |
10.1590/S1516-35982011000500005
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| URL | |
| Keywords | Keywords not found |
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