水稻剑叶形态与产量的关系及相关性状的QTL分析

摘要

对以02428DD/南京11配置的F2群体剑叶形态和单株产量等9个性状进行了相关分析和QTL定位.结果表明剑叶形态性状与部分产量性状呈现显著或极显著相关关系,共检测到6个性状的9个QTL,分布于6条染色体上,贡献率介于6.52％ ～ 16.65％,大于10％的位点有5个.其中剑叶长宽比qFLWR10与控制千粒重的qGW6初步确定为新QTL.以上研究结果可为叶片形态和产量性状QTL的精细定位及性状协同改良提供有益的信息.%The correlation and QTL analysis of 9 traits of flag leaf and yield were conducted using F2 populations derived from 02428DD/Nanjingl 1 as mapping populations. There were significant or extremely significant correlations between flag leaf traits and yieldtraits. A total of 9 QTLs related to six traits were detected on six chromosomes, with the explained phenolypic variances of 6. 52% to 16.65% , among which five QTLs were above 10%. Two QTLs, qFLWRlO and qGW6 were novel ones. The above results can offer a valuable reference for further location of QTL and promotion on traits of leaf morphology and yield.