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利用花药基部开裂长度存在明显差异的粳稻品种TD70和籼稻品种Kasalath的重组自交系(包含240个系)为作图群体,对控制水稻花药基部开裂长度的QTL进行鉴定,并对水稻花药基部开裂长度和其他农艺性状进行相关性分析。利用Ici Mappingv3.4软件,运用复合区间作图法,以均匀分布于12条染色体的141个SSR标记进行花药基部开裂长度的QTL检测,共检测到2个QTL位点。位于第6染色体RM3和RM3628之间的q LDBT6,LOD值3.23,贡献率6.18%,加性效应17.74%。q LDBT8位于第8染色体RM1376和RM4085之间,LOD值2.95,贡献率8.00%,加性效应20.09%,推测该区域与小穗不育有重要关系。RIL群体的花药基部开裂长度与剑叶宽、千粒质量、粒长、粒宽、粒厚间存在极显著正相关,与抽穗期、株高、分蘖数、剑叶长、总粒数、结实率和抽穗当天最高温度、抽穗期平均温度、抽穗期最高温度以及芒长之间不相关。
The QTLs for controlling the cracking length of rice anther base were identified by using recombinant inbred lines (including 240 lines) with indica variety TD70 and indica variety Kasalath, respectively. Length and other agronomic traits correlation analysis. Using Ici Mappingv3.4 software, 141 SSR markers evenly distributed on 12 chromosomes were used for QTL detection of anther base cleavage length using composite interval mapping method. Two QTLs were detected. Q LDBT6 located on chromosome 6 between RM3 and RM3628 had a LOD value of 3.23, a contribution rate of 6.18% and an additive effect of 17.74%. q LDBT8 located on chromosome 8 between RM1376 and RM4085, LOD value 2.95, contribution rate of 8.00%, additive effect of 20.09%, speculated that the region and spikelet infertility are important. The length of rupture at the base of anther in RIL population was significantly and positively correlated with the width of flag leaf, the quality of grain, the length of grain, the breadth of grain, and the grain thickness. There was a significant positive correlation between the length of anther rupture and the length of heading stage, plant height, tillering number, The rates were not related to the maximum temperature on heading day, the average temperature at heading, the maximum temperature at heading, and the length of mantle.