Data/hora: 10/06/2024 16:15:28

Provedor de dados: | 63
País: | Brazil
Título: | Genetic evaluation of grain sorghum hybrids in Brazilian environments using the REML/BLUP procedure
Autores: | Almeida Filho,Janeo Eustáquio de; Tardin,Flávio Dessaune; Resende,Marcos Deon Vilela de; Silva,Fabyano Fonseca e; Granato,Ítalo Stefanine Correia; Menezes,Cicero Beserra de.
Data: | 2014-04-01
Ano: | 2014
Resumo: | When it comes to recommending sorghum (Sorghum bicolor) cultivars, it is essential to carry out a genetic evaluation of the agronomic traits of promising genotypes from several common environments where the crop is cultivated. This study consisted of a genetic evaluation of 52 experimental grain sorghum hybrids and eight commercial cultivars. Hybrids were evaluated in 19 experiments representing the most varied cultivation conditions in Brazil. Traits of agronomic interest such as grain yield, flowering and plant height were analysed. Genotypic evaluation was performed following the REML/BLUP (Restricted Maximum Likelihood/Best Linear Unbiased Predictor) procedure; the MHPRVG (Harmonic Mean of Relative Performance of Genotypic Values) method was also employed to study stability and adaptability. Hybrids which stood out in terms of highest grain yield based on genotypic values, stability and adaptability were 0306037, 1G150, DKB 599, 0306039, 1G282 and 0307671. Of these, only 1G282 showed restrictions as to plant height. For flowering, experimental hybrids showed shorter cycles than commercial cultivars, confirming the efficiency of genetic improvement for this trait. With the analysis of grain yield considering days to flowering and plant height as covariates, it was observed that most of the hybrids of greater performance, showed grain yield to be positively influenced by plant height and days to flowering.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000200009
Editor: | São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
Relação: | 10.1590/S0103-90162014000200009
Formato: | text/html
Fonte: | Scientia Agricola  v.71 n.2 2014
Fonte: | info:eu-repo/semantics/openAccess