Combining ability and correlations for yield components in early generations of potato breeding

被引：1

作者：

de Galarreta, JIR ^{[1
]}

Ezpeleta, B ^{[1
]}

Pascualena, J ^{[1
]}

Ritter, E ^{[1
]}

机构：

[1] Basque Inst Agr Res, NEIKER, E-01080 Vitoria, Spain

来源：

PLANT BREEDING | 2006年 / 125卷 / 02期

关键词：

Solanum tuberosum; seedlings; general combining ability; specific combining ability;

D O I：

暂无

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

A partial diallel set of crosses was made between 14 potato cultivars chosen for their fertility, from those included in a potato breeding programme at the NEIKER - Basque Institute for Agricultural Research. The progeny were grown in completely randomized trials from 1997 to 1999. Performance for yield, tuber number and average tuber weight was analysed in seedling and two clonal generations. Variance estimates due to both general combining ability (GCA) and specific combining ability (SCA) were significant in all generations for all traits under study. However, SCA was more important than GCA in almost all cases. Correlation coefficients among characters, generations, GCA and SCA effects were examined. For tuber yield no relation was obtained between generations; however, average tuber weight and yield were positively associated in all generations. The results indicate that appropriate selection criteria depend strongly on the particular cross. The implication for a breeding strategy are discussed.

引用

页码：183 / 186

页数：4

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