Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/13305
Title: Seleção para duração do ciclo vegetativo em batata e relação com a produtividade de tubérculos
Other Titles: Selection for vegetative growth period and its relationship to tuber yield of potato
Keywords: Batata - Ciclo vegetativo
Batata - Produtividade
Potato - Vegetative cycle
Potato - Productivity
Issue Date: Sep-2009
Publisher: Associação Brasileira de Horticultura
Citation: RODRIGUES, G. B. et al. Seleção para duração do ciclo vegetativo em batata e relação com a produtividade de tubérculos. Horticultura Brasileira, Brasília, v. 27, n. 3, jul./set. 2009.
Abstract: Potato cultivars in Brazil generally present a growth cycle duration ranging from 90 to 110 days, whereas in countries located in temperate climate it can reach up to 150 days. Longer vegetative growth cycle in these countries confer higher tuber yield and, in tropical countries it also could be an alternative to increase tuber yield. In this work we evaluated the selection potential for longer or shorter growth cycle duration of potato clones and we determined the relationship between growth cycle duration and tuber yield. In the first clonal generation tuber yield and growth cycle duration were evaluated on 1561 genotypes derived from 22 clonal families. In the second clonal generation, the same traits were evaluated on 320 genotypes selected for earliness, intermediate and late vegetative cycle. Selection in the initial generations was efficient both to decrease and to increase the growth cycle duration. The selection for growth cycle based on individual clones allowed higher gains than the selection among families. The latest genotypes were more productive than the earliest genotypes.
URI: http://repositorio.ufla.br/jspui/handle/1/13305
Appears in Collections:DBI - Artigos publicados em periódicos



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