大麦（Hordeum vulgare L.）旗叶形态性状和叶绿素含量的QTL分析
QTL analysis of flag leaf in barley (Hordeum vulgare L.) for morphological traits and chlorophyll content.
作者信息
Xue Da-wei, Chen Ming-can, Zhou Mei-xue, Chen Song, Mao Ying, Zhang Guo-ping
机构信息
Agronomy Department, Zhejiang University, Hangzhou 310029, China.
出版信息
J Zhejiang Univ Sci B. 2008 Dec;9(12):938-43. doi: 10.1631/jzus.B0820105.
Abstract
To understand genetic patterns of the morphological and physiological traits in flag leaf of barley, a double haploid (DH) population derived from the parents Yerong and Franklin was used to determine quantitative trait loci (QTL) controlling length, width, length/width, and chlorophyll content of flag leaves. A total of 9 QTLs showing significantly additive effect were detected in 8 intervals on 5 chromosomes. The variation of individual QTL ranged from 1.9% to 20.2%. For chlorophyll content expressed as SPAD value, 4 QTLs were identified on chromosomes 2H, 3H and 6H; for leaf length and width, 2 QTLs located on chromosomes 5H and 7H, and 2 QTLs located on chromosome 5H were detected; and for length/width, 1 QTL was detected on chromosome 7H. The identification of these QTLs associated with the properties of flag leaf is useful for barley improvement in breeding programs.
摘要
为了解大麦旗叶形态和生理性状的遗传模式，利用由亲本Yerong和Franklin构建的加倍单倍体（DH）群体，来确定控制旗叶长度、宽度、长宽比和叶绿素含量的数量性状位点（QTL）。在5条染色体的8个区间共检测到9个具有显著加性效应的QTL。单个QTL的变异范围为1.9%至20.2%。对于以SPAD值表示的叶绿素含量，在2H、3H和6H染色体上鉴定出4个QTL；对于叶长和叶宽，在5H和7H染色体上检测到2个QTL，在5H染色体上也检测到2个QTL；对于长宽比，在7H染色体上检测到1个QTL。这些与旗叶性状相关的QTL的鉴定，有助于大麦育种计划的改良。
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