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探索和鉴定调控小麦产量因子的基因位点有助于产量的遗传改良。以安农0711/烟农19 BC1F2回交群体(680个家系)为供试材料,单粒播种,于黄熟期测定单株有效穗数,收获后测定穗粒数、千粒重及单株产量。利用完备区间作图法对上述单株产量及其相关性状进行全基因组QTL定位。结果表明,控制千粒重的QTL有3个,主要分布在染色体1D(2个)和4B(1个)上,分别位于标记区间Xcfd27-Xwmc432,Xwmc432-Xcfd61和Xwmc89-Xwmc48;控制单株产量和单株有效穗数的QTL均各有2个,分别位于染色体1A和5D的相同区间Xwmc312-Xwmc120和Xgwm271-Xcfd18;没有检测到控制穗粒数的QTL位点。
Exploring and identifying genetic loci that regulate wheat yield factors contribute to the genetic improvement of yield. The backcross population (680 families) of Annong 0711 / Yannong 19 BC1F2 was used as the test material, sown individually, and the effective panicles per plant were measured at the yellow maturity stage. The grains per spike, 1000-grain weight and yield per plant were measured after harvesting. Whole-genome QTL mapping was carried out on the above-mentioned single-crop yield and its related traits using complete interval mapping. The results showed that there were 3 QTLs controlling 1000-grain weight, mainly distributed on chromosomes 1D (2) and 4B (1), located in the marker interval Xcfd27-Xwmc432, Xwmc432-Xcfd61 and Xwmc89-Xwmc48 respectively. There were two QTLs for the number of effective panicle per plant, which were located on the same interval Xwmc312-Xwmc120 and Xgwm271-Xcfd18 on chromosomes 1A and 5D, respectively. No QTLs were detected for grain number per spike.