Data/hora: 11/06/2024 02:12:28

Provedor de dados: | 65
País: | Brazil
Título: | Correlation and path analysis of yield and its components and plant traits in wheat
Autores: | Okuyama,Lauro Akio; Federizzi,Luiz Carlos; Barbosa Neto,José Fernandes.
Data: | 2004-12-01
Ano: | 2004
Palavras-chave: | Triticum aestivum; Water stress; Higher grain yield.
Resumo: | This study was aimed to characterize yield components and plant traits related to grain yield. Correlation and path analysis were carried out in wheat genotypes grown under irrigated and non-irrigated field conditions. In the path coefficient analysis, grain yield represented the dependent variable and the number of spikes m-2, number of grains spike-1, kernel weight, days to anthesis, above-ground biomass m-2 and plant height were the independent ones. In both years, periods without rain occurred from early milk to grain ripening and from flag leaf sheath opening to grain ripening for first and second sowing dates, respectively. Character associations were similar in both water regimes. Grain yield showed positive phenotypic correlation with above-ground biomass, number of spikes m-2 and number of grains per spike. Path analysis revealed positive direct effect and moderate correlation of number of spike m-2 and number of grains per spike with grain yield. These results indicated that the number of spikes m-2 and the number of grains per spike followed by the above-ground biomass were the traits related to higher grain yield, under irrigated and late season water stress conditions.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000600006
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/S0103-84782004000600006
Formato: | text/html
Fonte: | Ciência Rural  v.34 n.6 2004
Fonte: | info:eu-repo/semantics/openAccess