Data/hora: 02/06/2024 05:26:41

Provedor de dados: | 86
País: | Brazil
Título: | Prediction of direct and indirect genetic gains and genotypic correlations in rubber tree progenies
Autores: | Verardi,Cecília Khusala; Scaloppi Junior,Erivaldo José; Gonçalves,Paulo de Souza.
Data: | 2011-09-01
Ano: | 2011
Palavras-chave: | Hevea brasiliensis; Direct and indirect method; Early selection; Selection cycle.
Resumo: | The objective of this work was to estimate the genetic parameters, genotypic and phenotypic correlations, and direct and indirect genetic gains among and within rubber tree (Hevea brasiliensis) progenies. The experiment was set up at the Municipality of Jaú, SP, Brazil. A randomized complete block design was used, with 22 treatments (progenies), 6 replicates, and 10 plants per plot at a spacing of 3x3 m. Three‑year‑old progenies were assessed for girth, rubber yield, and bark thickness by direct and indirect gains and genotypic correlations. The number of latex vessel rings showed the best correlations, correlating positively and significantly with girth and bark thickness. Selection gains among progenies were greater than within progeny for all the variables analyzed. Total gains obtained were high, especially for girth increase and rubber yield, which were 93.38 and 105.95%, respectively. Young progeny selection can maximize the expected genetic gains, reducing the rubber tree selection cycle.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000900015

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X2011000900015
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.46 n.9 2011
Fonte: | info:eu-repo/semantics/openAccess