CAJ | 학술논문

[目的]对小麦光温敏不育系BS366的抽穗期进行QTL分析,为BS366的品种改良和标记辅助育种奠定基础.[方法]以小麦光温敏雄性不育系BS366和常规品种Baiyu149杂交得到的234个DH(doubled haploid)株系为材料,于2007～2008年分别种植于北京海淀和安徽阜南试验田,采用复合区间作图法,对抽穗期进行QTL分析.[结果]共检测到15个抽穗期QTL,在两地都检测到的QTL有8个,分别位于染色体1B、2A、2D、3B(2个)、6B(2个)和7B,单个QTL的贡献率为2.42%～10.98%.[结论] 在1B染色体上新发现了一个抽穗期QTL,丰富了QTL资源.在两地都检测到的8个QTL,可用于小麦光温敏雄性不育系BS366抽穗期的改良和标记辅助育种.
[목적]대소맥광온민불육계BS366적추수기진행QTL분석,위BS366적품충개량화표기보조육충전정기출.[방법]이소맥광온민웅성불육계BS366화상규품충Baiyu149잡교득도적234개DH(doubled haploid)주계위재료,우2007～2008년분별충식우북경해정화안휘부남시험전,채용복합구간작도법,대추수기진행QTL분석.[결과]공검측도15개추수기QTL,재량지도검측도적QTL유8개,분별위우염색체1B、2A、2D、3B(2개)、6B(2개)화7B,단개QTL적공헌솔위2.42%～10.98%.[결론] 재1B염색체상신발현료일개추수기QTL,봉부료QTL자원.재량지도검측도적8개QTL,가용우소맥광온민웅성불육계BS366추수기적개량화표기보조육충.
[Objective]The study aimed to map QTLs (Quantitative trait loci) of heading stage for phtopeiod-thermo sensitive male sterile line BS366 in wheat. [Method] A population of 234 doubled haploid derived from the cross between BS366 and Baiyu149 was planted in Beijing and Funan in 2007, respectively. We used composite interval mapping (CIM) method to analyse the QTLs for heading stage. [Result]We detected 15 QTLs for heading stage. 8 QTLs were detected in both Beijing and Funan, which were located on 1B, 2A, 2D, 3B (2 loci), 6B (2 loci) and 7B. A single QTL accounted for 2.42%-10.98% of pheotypic varience. [Conclusion] Eight QTLs which were detected under two environments could be applied for marker-assisted breeding and improvement of BS366. The QTL on chromosome 1B was new for heading stage, which enriches the QTL resource.