数量性状位点
生物
遗传学
基因定位
遗传标记
染色体
包含复合区间映射
近交系
分子标记
遗传连锁
基因
作者
Yingying Wang,Xiulan Sun,Yan Zhao,Fanmei Kong,Ying Guo,Guizhi Zhang,Yanyan Pu,Ke Wu,Sishen Li
出处
期刊:Plant Science
[Elsevier]
日期:2011-07-01
卷期号:181 (1): 65-75
被引量:31
标识
DOI:10.1016/j.plantsci.2011.03.020
摘要
DArT and SSR markers were used to saturate and improve a previous genetic map of RILs derived from the cross Chuan35050 × Shannong483. The new map comprised 719 loci, 561 of which were located on specific chromosomes, giving a total map length of 4008.4 cM; the rest 158 loci were mapped to the most likely intervals. The average chromosome length was 190.9 cM and the marker density was 7.15 cM per marker interval. Among the 719 loci, the majority of marker loci were DArTs (361); the rest included 170 SSRs, 100 EST–SSRs, and 88 other molecular and biochemical loci. QTL mapping for fatty acid content in wheat grain was conducted in this study. Forty QTLs were detected in different environments, with single QTL explaining 3.6–58.1% of the phenotypic variations. These QTLs were distributed on 16 chromosomes. Twenty-two QTLs showed positive additive effects, with Chuan35050 increasing the QTL effects, whereas 18 QTLs were negative with increasing effects from Shannong483. Six sets of co-located QTLs for different traits occurred on chromosomes 1B, 1D, 2D, 5D, and 6B.
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