摘要
利用RIL群体131个系,在小麦中首次对超氧化物岐化酶活性、可溶性蛋白含量、脯氨酸含量、硝酸还原酶活性、气孔导度等5个抗旱相关生理性状进行了QTL定位,共检测到超氧化物岐化酶活性、可溶性蛋白含量、硝酸还原酶活性等3个性状5个加性QTL,涉及1D、2B、5A、7B共4条染色体,可解释表型变异的8.74%～36.96%.其中,3个QTL即QSod.sdau-7B、QSpc.sdau-1D、QNra.sdau-1D贡献率较大,分别为29.28%、23.11%和36.96%,其加性效应都源于山农483.讨论了可能用于标记辅助选择的QTL及其分子标记.
With 131 recombinant inbreed lines, the QTL mapping of superoxide activity (SOD), soluble protein content (SPC), proline content, nitrate reductase activity (NRA) and stomatal conductance for wheat was conducted, and five additive quantitative trait loci of superoxide activity, soluble protein content and nitrate reductase on four chromosomes, 1D,2B and 5A, were found with their genotype variability ranging between 8.74% and 36.96. Of the additive quantitative trait loci, there were three loci, Qsod, sdau 7B , QSpc, sdau 1D , which showed relatively high contribution rates, which were 29.28%, 23.11 %, 36.96%, respectively, and whose additive effects fully originated from Shannong 483. Meanwhile, the probability for some quantitative trait loci to be used in supplementary QLT screening and molecular marking was discussed.
出处
《西北植物学报》
CAS
CSCD
北大核心
2005年第4期696-699,共4页
Acta Botanica Boreali-Occidentalia Sinica
基金
国家863重大专项优质超高产农作物新品种选育项目编号:2003AA207100
关键词
小麦
重组自交系
抗旱
生理性状
QTL
wheat
recombant inbred line
drought resistance
physiological trait
QTL
