Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/15104
Título: Genetic gains for heat tolerance in potato in three cycles of recurrent selection
Título(s) alternativo(s): Ganhos genéticos com três ciclos de seleção recorrente visando a tolerância ao calor em batata
Palavras-chave: Batata - Melhoramento genético
Batata - Resistência ao calor
Potato - Genetic improvement
Potato - Resistance to heat
Data do documento: Jun-2011
Editor: Crop Breeding and Applied Biotechnology
Citação: BENITES, F. R. G.; PINTO, C. A. B. P. Genetic gains for heat tolerance in potato in three cycles of recurrent selection. Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 11, n. 2, p. 133-140, June 2011.
Resumo: Practically all potato cultivars grown in Brazil are native to Europe and not fully adapted to the tropical conditions. The purpose of this study was to estimate the genetic gains of three cycles of recurrent selection for heat tolerance in potato. The base population in this study consisted of five Brazilian and five heat-tolerant clones. In the winter of 2006 and rainy growing season of 2007 103 clones were evaluated (eight clones of the base population, 29 of the first cycle, 32 and 30 of the second and third recurrent selection cycle, respectively, and four control cultivars). The genetic gains for tuber traits in both growing seasons were 37.8 % (yield), 13.0 % (weight), 32.4 % (percent of large tubers), 0.8 % (tuber specific gravity) and 16.6 % (general tuber appearance). The percentage of physiological disorders (second-growth tubers and cracking) was also reduced by selection.
URI: http://repositorio.ufla.br/jspui/handle/1/15104
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