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通过以明恢63和优质泰国香米KDML105两个籼稻品种为亲本杂交的重组自交系(Recombinantinbred line,RIL)群体,构建包含134个简单重复序列标记(SSR)的遗传连锁图谱。2009、2010年对水稻(Oryza sativa L.)的粒长、粒宽、粒形、粒厚、腹白率、心白率和千粒重进行数量性状位点(QTL)定位。2009年检测到16个QTLs,其中粒长、粒宽、粒形、粒厚、腹白率、心白率和千粒重分别检测到2、2、1、1、1、1和8个QTLs,单个QTL可解释表型变异的4.43%～13.06%。2010年检测到19个QTLs,其中粒长、粒宽、粒形、粒厚、腹白率、心白率和千粒重分别检测到2、3、3、2、3、3和3个QTLs,单个QTL可解释表型变异的6.04%～24.31%。千粒重qTGW-3和qTGW-6-2在2009、2010年两年中均被重复检测到,qTGW-3在两年中分别可解释表型变异的13.06%和7.12%,qTGW-6-2在两年中分别可解释表型变异的7.66%和14.56%。
A genetic linkage map containing 134 simple repeat markers (SSRs) was constructed by using a recombinant inbred line (RIL) population of two indica rice varieties with Minghui63 and high quality Thai KDML105 as parents. In 2009 and 2010, the quantitative trait locus (QTL) mapping of grain length, grain width, grain shape, grain thickness, whiteness rate, whiteness rate and 1000-grain weight of rice (Oryza sativa L.) was conducted. Sixteen QTLs were detected in 2009, of which 2, 2, 1, 1, 1, 1, 1 and 8 QTLs were detected in grain length, grain width, grain shape, grain thickness, QTL explained 4.43% ~ 13.06% of phenotypic variation. 19 QTLs were detected in 2010, of which 2, 3, 3, 2, 3, 3 and 3 QTLs were detected in grain length, grain width, grain shape, grain thickness, QTL explained 6.04% ~ 24.31% of phenotypic variation. QTGW-3 and qTGW-6-2 were repeatedly detected in both years 2009 and 2010, respectively, and qTGW-3 explained 13.06% and 7.12% of the phenotypic variation in two years respectively. QTGW-6-2 In two years, 7.66% and 14.56% of phenotypic variation were explained respectively.