Comparação de procedimentos de seleção para produção de grãos em populações de soja
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Data
2004-06
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Resumo
This study aimed to predict the genetic gain for grain
production by applying different selection procedures and to
choose, among the studied populations, the most promising one
regarding gain expectation. Four selection strategies were used:
selection among and within families; combined selection and
individual selection for grain production; as well as for selection
free from weights and parameters, number of days and plant height at maturation. Generation F5 individuals were selected, placed
and observed in the field following the design standard-cultivars
among the segregating lines, during the agricultural year of 1996/
1997, in Vicosa, Minas Gerais. The results indicated that,
considering the family in the selective process, combined selection
was the most promising strategy. However, individual selection
showed the highest expectation of genetic gain among the four
strategies. The cross between the parents CEPS 89-26 and FTCristalina
presented the highest expectation of genetic gain.
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Palavras-chave
Glycine max (L.) merrill, Herdabilidades, Predição de ganhos, Heritability, Gain prediction
Citação
REIS, Edésio Fialho dos et al. Comparação de procedimentos de seleção para produção de grãos em populações de soja. Ciência Rural, Santa Maria, v. 34, n. 3, p. 685-692, maio./jun. 2004.