分子标记辅助选择小麦抗白粉病兼抗赤霉病聚合体

来源 :植物病理学报 | 被引量 : 0次 | 上传用户:jaredchen123
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Sumai 3,a wheat variety resistant to Fusarium head blight(FHB),was crossed with Neimai 9,a commercial wheat cultivar with the resistance to powdery mildew.The SCAR(sequence characterized amplified region) markers of powdery mildew resistance gene Pm21 and four SSR(simple sequence repeats)markers flanking the major FHB resistance QTL(Qfhs.ndsu-3BS) in Sumai 3 were used to detect the resistance loci by marker assisted selection(MAS) in the plants of the F2 population.Identification of resistance to both powdery mildew and FHB in field showed that 12 plants resistant to both diseases were obtained.In addition,the agronomic traits of these plants were better than those of Sumai 3,and are perhaps the excellent parental materials for wheat breeding. Sumai 3, a wheat variety resistant to Fusarium head blight (FHB), was crossed with Neimai 9, a commercial wheat cultivar with the resistance to powdery mildew. SCAR (sequence characterized amplified region) markers of powdery mildew resistance gene Pm21 and four SSR (simple sequence repeats) markers flanking the major FHB resistance QTL (Qfhs.ndsu-3BS) in Sumai 3 were used to detect the resistance loci by marker assisted selection (MAS) in the plants of the F2 population. Identification of resistance to both powdery mildew and FHB in field showed that 12 plants resistant to both diseases were obtained. In addition, the agronomic traits of these plants were better than those of Sumai 3, and are perhaps the the excellent parental materials for wheat breeding.
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