Data/hora: 11/06/2024 19:13:21

Provedor de dados: | 54
País: | Brazil
Título: | Potential of twenty exotic germplasms to improve Brazilian maize architecture
Autores: | Neto,Amadeu Regitano; Nass,Luciano Lourenço; Miranda Filho,José Branco de.
Data: | 1997-12-01
Ano: | 1997
Resumo: | Temperate and temperate x tropical germplasms were introduced into the maize breeding of the Department of Genetics (ESALQ-USP). Twenty populations designated as P-1 to P-20 and a check population were evaluated in a randomized complete block design with two replications at Piracicaba, SP, Brazil. Plots were 2.0 m long, spaced 1.0 m apart, with 10 plants per plot after thinning. The following traits were evaluated: PH, plant height; EH, ear height; TB, tassel branch number; KW, 100 kernels weight; EL, ear length; ED, ear diameter; KR, kernels per row, and RN, number of rows of kernels. The means of the exotic populations showed a variation in performance for all traits. The population means were greater than check means for KW, EL, and KR. Populations P-9, P-10, P-12, and P-13 showed low relative ear placement values (EH/PH index), indicating that these materials could contribute to lower ear placement in local populations. P-1 and P-9 showed a high potential to reduce TB. The phenotypic correlation coefficients among populations were positive for most combinations, except for RN with PH, EH, TB, and KW. Predictions of 19 composite means were obtained for all traits.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551997000400022
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/S0100-84551997000400022
Formato: | text/html
Fonte: | Brazilian Journal of Genetics  v.20 n.4 1997
Fonte: | info:eu-repo/semantics/openAccess