Título:	Genetic gains for heat tolerance in potato in three cycles of recurrent selection.
Autoria:	BENITES, F. R. G. PINTO, C. A. B. P.
Afiliação:	FLAVIO RODRIGO GANDOLFI BENITES, CNPGL; CÉSAR AUGUSTO BRASIL PEREIRA PINTO, UFLA.
Ano de publicação:	2011
Referência:	Crop Breeding and Applied Biotechnology, v. 11, n. 2, p. 133-140, 2011.
Conteúdo:	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.
Thesagro:	Stress
NAL Thesaurus:	breeding heat
Palavras-chave:	Solanum tuberosum L
Digital Object Identifier:	https://doi.org/10.1590/S1984-70332011000200005
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CNPGL)