Data/hora: 02/06/2024 04:33:15

Provedor de dados: | Brazilian Archives of Biology and Technology
País: | Brazil
Título: | Prediction of Hevea progeny performance in the presence of genotype-environment interaction
Autores: | Gonçalves,Paulo de Souza; Moraes,Mário Luiz Teixeira de; Silva,Marcelo de Almeida; Gouvêa,Lígia Regina Lima; Aguiar,Adriano Tosoni da Eira; Costa,Reginaldo Brito da.
Data: | 2009-02-01
Ano: | 2009
Palavras-chave: | Hevea brasiliensis; Stability; Adaptability; Environmental index; Linear regression.
Resumo: | Twenty two open-pollinated Hevea progenies from different parental clones of the Asian origin were tested at five sites in the Northwestern São Paulo State Brazil to investigate the progeny girth growth, rubber yield, bark thickness and plant height. Except for the rubber yield, the analysis of variance indicated highly significant (p&lt;0.01) genotype x environment interaction and heterogeneity of regressions among the progenies. However, the regression stability analysis identified only a few interacting progenies which had regression coefficients significantly different from the expected value of one. The linear regressions of the progeny mean performance at each test on an environmental index (mean of all the progenies in each test) showed the general stability and adaptability of most selected Hevea progenies over the test environments. The few progenies which were responsive and high yielding on different test sites could be used to maximize the rubber cultivars productivity and to obtain the best use of the genetically improved stock under different environmental conditions.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000100004
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132009000100004
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.52 n.1 2009
Fonte: | info:eu-repo/semantics/openAccess