花生主要品质性状的QTLs定位分析

摘要

以郑8903×豫花4号的215个重组自交系群体(RILs)为材料,采用2008年原阳种植材料(F8)的品质检测数据,运用WinQTLCart 2.5软件进行与花生蛋白质、脂肪及脂肪酸含量相关的QTLs定位分析.研究结果显示,检测到2个与蛋白质含量相关的QTLs,遗传贡献率分别为4.82％和9.66％;2个与脂肪含量相关的QTLs,遗传贡献率分别为5.25％和8.24％.与油酸、亚油酸、硬脂酸和山嵛酸含量相关的QTL各检测到1个,遗传贡献率分别为5.13％、8.28％、24.14％和7.88％；2个与花生酸含量相关的QTLs,遗传贡献率分别为7.12％和18.32％.%Two hundred fifteen recombinant inbred lines (RILs) of F8 derived from cross Zheng8903 ×Yuhua4 and their parents were planted in Yuanyang, Henan Province,and major quality traits were mensured. WinQTLCart 2. 5 software was employed to analyze the genotyping and phenotyping data. Two protein - related QTLs respectively explained 4. 82% and 9. 66% phenotypic variation and 2 fat — related QTLs respectively explained 5. 25% and 8.24% phenotypic variation. One QTL respectively explained 5. 13% ,8. 28% ,24. 14% and 7. 88% phenotypic variation for oleic acid, linoleic acid, stearic acid and behenic acid. Two QTLs related to arachidic acid were identified with genetic contribution of 7.12% and 18.32% respectively.