中文摘要：

为给小麦株高标记辅助选择提供可供选择的分子标记，并进一步对株高QTL进行精细定位及相关基因克隆，以小麦骨干亲本周8425B和小偃81衍生的包含102个家系的RIL群体（Fe）为材料，利用90K芯片标记构建高密度遗传图谱，在3个环境下对株高进行QTL检测。结果表明，所构建的图谱含有9290个SNP标记，覆盖了小麦21条染色体的63个连锁群，图谱总长3894．64cM，平均标记密度为0．42cM。共检测到9个控制株高的QTL，分布于1B、4A、4D、6B、7A、7B和7D染色体上，变异解释率为2．23％～16．25％。QPh．nafu．4D,QPh．nafu．4A、QPh．nafu．1B-2与前人定位到的位置相同或相近。QPb．nafu．7．4具有较大的LOD值（8．17）和变异解释率（14．69％），为主效QTL。QPh．nafu．613、QP6．nafu．7B-1、QPh．nafu．7B-2均能在多个环境下使用多种QTL检测方法定位到，可能为新的较稳定的控制株高的QTL。

英文摘要：

Molecular marker assisted breeding of wheat provides a reference for fine mapping and cloning of plant height genes. In the present study,a population of 102 recombinant inbred lines （F8） was derived from a cross between the elite parents Zhou 8425B and Xiaoyan 81. The population was used to identify quantitative trait loci （QTL） in three environments. A high density genetic map of wheat was constructed by using 90K chip. The constructed genetic linkage map contains 9 290 SNP markers,with a total length of 3 894.64 cM,containing 63 linkage groups and covering the 21 chromosomes of wheat,with an average marker density of 0.42 cM. A total of nine QTLs controlling plant height were found on 1B,4A,4D,6B,TA,7B and 7D chromosomes. The amount of phenotype variation explained （PVE） by individual QTL ranged from 2.23% to 16.25%. QPh. nafu. 4D, QPh. nafu. 4A and QPh. nafu. 1B-2 have the same or similar position with the findings in previous studies. QPh. nafu. 7A have a high value of LOD （8.17） and PVE （14.69%） ,which may become a main effect QTL. QPh. nafu. 6B, QPh. nafu. 7B-1 and QPh. nafu. 7B-2 can be detected in multi-environments and methods,which may become the new stable QTLs controlling plant height.