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Genetic dissection of chlorophyll content at different growth stages in common wheat

机译:普通小麦不同生育期叶绿素含量的遗传解剖

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Quantitative trait loci (QTLs) for chlorophyll content were studied using a doubled haploid (DH) population with 168 progeny lines, derived from a cross between two elite Chinese wheat cultivars Huapei 3 x Yumai 57. Chlorophyll content was evaluated at the maximum tillering stage (MS), the heading stage (HS), and the grain filling stage (GS), at three different environments in 2005 and 2006 cropping seasons. QTL analyses were performed using a mixed linear model approach. A total of 17 additive QTLs and nine pairs of epistatic QTLs were detected. Ten of 17 additive QTLs for chlorophyll content were persistently expressed at more than two growth stages, which suggest developmentally regulated loci controlling genetics for chlorophyll content in different growth stages in wheat. One novel major QTL for chlorophyll content was closely linked with the PCR marker Xwmc215 and was persistently expressed at three growth stages.
机译:叶绿素含量的定量性状位点(QTL)使用来自两个中国优良小麦品种华培3 x豫麦57杂交的168个后代系的双倍单倍体(DH)群体进行研究。在最大分ing期评估叶绿素含量( MS),抽穗期(HS)和谷物灌浆期(GS),分别在2005和2006种植季节的三个不同环境中进行。使用混合线性模型方法进行QTL分析。总共检测到17个加性QTL和9对上位QTL。叶绿素含量的17个添加QTL中有10个在两个以上的生育阶段持续表达,这表明在小麦不同生育阶段,叶绿素含量的遗传调控基因均受到发育调控。一种新的主​​要叶绿素含量QTL与PCR标记Xwmc215紧密相连,并在三个生长阶段持续表达。

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