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采用区间作图和复合区间作图方法对重组自交系群体宁 894 0 37 Alondra、望水白 Alondra和苏麦 3号 Alon dra进行了抗赤霉病QTL分析 ,结果表明 ,用在田间和温室的赤霉病抗性鉴定资料 ,在 3个赤霉病抗源宁 894 0 37、望水白和苏麦 3号的 3B染色体短臂上均检测到主效QTL的存在。宁 894 0 37主效QTL位于标记BARC133与Xgwm4 93之间的 5 0cM的区间内 ,最高可解释 4 2 8%的赤霉病抗性 ;望水白的主效QTL位于标记BARC14 7与Xgwm4 93之间11 5cM的区间内 ,最高可解释 15 1%的赤霉病抗性 ;苏麦 3号的主效QTL位于Xgwm5 33a与Xgwm4 93之间 13 0cM的区间内 ,最高可解释 10 6 %的赤霉病抗性。与赤霉病抗性主效QTL紧密连锁的标记均为SSR标记 ,可直接用于分子辅助育种
The QTL analysis of Fusarium head blight resistance in the inbred lines Ning 894 0 37 Alondra, Wangshuibai Alondra and Sumai 3 was carried out by interval mapping and compound interval mapping. , The main QTLs were detected on the short arm of 3B chromosomes of three shuoyufujing 894 037, Wangshui Bai and Sumai 3. Ning 894 0 37 The major QTLs are located within the range of 50 cM between markers BARC133 and Xgwm4 93 and may account for 42.8% of the FHB resistance. The main QTLs for water potential of Wishui White are located between BARC14 7 and Xgwm4 93 Up to 15 1% in the 11 5cM interval. The major QTL for Sumai 3 was located in the 13 0cM interval between Xgwm5 33a and Xgwm4 93, up to 106% Scab resistance. The markers closely linked to the major QTLs for scab resistance were SSR markers that could be directly used for molecular assisted breeding