Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/13364
Título: Repeatability of family means in early generations of potato under heat stress
Título(s) alternativo(s): Repetibilidade de médias de famílias em gerações precoces de batata sob condições de calor
Palavras-chave: Batata - Melhoramento genético
Batata - Seleção precoce
Batata - Resistência térmica
Batata - Clonagem
Potato - Genetic improvement
Potato - Early Selection
Potato - Thermal Resistance
Potato - Cloning
Data do documento: Dez-2011
Editor: Crop Breeding and Applied Biotechnology
Citação: BENAVENTE, C. A. T. et al. Repeatability of family means in early generations of potato under heat stress. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 11, n. 4, p. 330-337, Dec. 2011.
Resumo: The selection of potato clones for yield is usually effective from the second clonal generation. It would however be ideal to select from the seedling generation (SG) or the first clonal generation (FCG). The aim of this study was to evaluate the repeatability of selection at the family level performed in the early generations with the subsequent generations, for tuber yield and specific gravity in the warm season. Thirty families were evaluated in the SG, FCG and the second, third and fourth clonal generation, without any selection. In this way, adjusted means of the 30 families were obtained for each generation. Selections were simulated independently in the different family generations, and then the repeatability of these families among generations verified, using the same selection intensity. The results showed that the family selection in the SG and FCG for specific gravity and in the FCG for tuber yield is efficient, at mild as well as warm temperatures.
URI: http://repositorio.ufla.br/jspui/handle/1/13364
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