SciELO - Scientific Electronic Library Online

 
vol.66 número3Deficiência hídrica agrava os sintomas fisiológicos da clorose variegada dos citros em laranjeira 'Natal'Predição de ganhos genéticos por índices de seleção na população de milho pipoca UNB-2U sob seleção recorrente índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Bragantia

versão impressa ISSN 0006-8705versão On-line ISSN 1678-4499

Resumo

SILVA, Giovani Oleário Da et al. Correlations between appearance and yield characters, and path analyses for potato tuber appearance. Bragantia [online]. 2007, vol.66, n.3, pp.381-388. ISSN 0006-8705.  http://dx.doi.org/10.1590/S0006-87052007000300003.

The objective of this work was to verify correlations between characters of tuber appearance and yield; as well as the influence of tuber appearance components characters on their expression and selection implications. A potato hybrid population of 15 families each one with 60 genotypes. The experiments were conducted in the experimental field of Embrapa Clima Temperado, Pelotas, Rio Grande do Sul State, Brazil, in Fall of 2004 and 2005. Tuber appearance was closer correlated with tuber shape, tuber curvature, tuber pointing and tuber eyebrow, in the seedling generation, and with tuber shape and tuber size uniformity, in the first clonal generation. Yield was strongly associated with tuber size, tuber number and average tuber weight, in the seedling stage, and with tuber size, tuber number, average tuber weight, tuber flatness and plant vigor, in the first clonal generation. Tuber curvature showed to be the most effective trait for indirect selection to improve tuber appearance in both generations. The results suggest that in the seedling stage, tuber pointing should also be considered along with tuber curvature the selection of tuber appearance.

Palavras-chave : Solanum tuberosum L.; indirect selection; direct and indirect effect.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons