Population extremes for assessing trait value and correlated response of genetically complex traits

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• 作者：G.J. Rebetzke^a ; ^{Greg.Rebetzke@csiro.au} ; R.A. Richards^a ; J.B. Holland^b
• 关键词：NILs ; near-isogenic lines ; re ; environmental correlation ; rg ; genetic correlation ; rp ; phenotypic correlation ; h2 ; heritability ; R2 ; coefficient of determination
• 刊名：Field Crops Research
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：201
• 期：Complete
• 页码：122-132
• 全文大小：1559 K
• 卷排序：201

文摘

The adoption by breeders of many complex traits important to improved crop performance is slowed by the limited understanding of their value relative to each other. This paper details the assessment and demonstrated use of population extremes (or ‘tails’) common to many breeding and genetic populations for all field crops in assessing correlated changes in target traits such as grain yield. Using a quantitative and physiological genetic framework we demonstrate that statistical power is high when heritability and genetic correlation is modest in size, and with contrasting tails of size 8–12 individuals.