【作者】 苗华荣； 杨伟强； 胡晓辉； 张胜忠； 崔凤高； 陈静；

【Author】 MIAO Huarong;YANG Weiqiang;HU Xiaohui;ZHANG Shengzhong;CUI Fenggao;CHEN Jing;Shandong Peanut Research Institute;

【机构】 山东省花生研究所；

【摘要】 花生耐盐遗传位点的挖掘可为耐盐遗传机制研究奠定基础,可为耐盐品种培育提供基因资源。以花育28号和P76构建的RIL群体为材料,基于该群体构建的高密度遗传图谱,结合2个年份盐胁迫下的表型数据,应用IciMapping软件对花生盐胁迫下相关性状进行QTL分析。检测到13个盐胁迫下表型绝对值相关的QTL,分布于10个连锁群上,其中株高绝对值相关的QTL 3个、主根长绝对值相关的QTL 2个、茎叶质量绝对值相关的QTL 6个、根质量绝对值相关的QTL2个。检测到6个盐胁迫下表型相对值相关的QTL,其中株高相对值相关的QTL 3个、主根长相对值相关的QTL 2个、茎叶鲜质量相对值相关的QTL 1个,分布于5个连锁群上。对比发现,B02染色体上Marker774175标记附近检测到4个QTL:qSmsh-HP-B02.1、qSwfp-HP-B02.1、qRmsh-HP-B02.1、qRwfp-HP-B02.1,分别控制盐胁迫下的株高和茎叶鲜质量的绝对值和相对值,其增效等位基因均来源于花育28号。结果对于进一步挖掘花生耐盐QTL具有重要意义。更多还原

【Abstract】 The identification of salt tolerant genetic loci in peanut can provide basis for the molecular mechanism of salt tolerance,and gene sources for improving salt tolerant cultivars.Based on a high-dense genetic map being constructed by using a RIL population derived from the cross between Huayu 28 and P76,we performed QTL analysis for vegetative traits of peanut under salt stress by software IciMapping.As a result,13 QTLs related to absolute value of traits on salt stress on ten linkage groups were detected.3,2,6 and 2 of 13 QTLs controlled absolute value of plant height,root length,shoot fresh weight and root weight,respectively.6 QTLs related to value of traits on salt stress on five linkage groups were detected.3,2 and 1 of 6 QTLs controlled relative value of plant height,root length and shoot fresh weight,respectively.4 QTLs detected in B02 were linked to Marker774175,which were qSmsh-HP-B02.1,qSwfp-HP-B02.1,qRmsh-HP-B02.1,qRwfp-HP-B02.1 related to absolute value and relative value of plant height and stem fresh weight on salt stress,respectively.Synergistic genes of the four QTLs derived from Huayu 28.The results provided important information for further exploration of salt tolerant QTL in peanut.更多还原