对四川省30 年来审(认)定的170 个小麦品种的骨干亲本进行了分析,结果表明:2000 年之前审(认)定小麦品种的骨干亲本是繁6 和衍生品种绵阳11 号系列,有繁6 亲缘关系的育成品种33 个,占该时期育成品种的49.28%,亲缘系数累计9.25.绵阳11 号及姊妹系育成品种21 个,占此时期育成品种的31.35%,亲缘系数合计8.45.2001—2013 年是四川省小麦育种界的黄金时期,13 年选育审定了112 个小麦新品种,克服了2000 年前种质资源使用单一和狭窄的弱点,这个时期选育出5 个品种以上的骨干亲本有绵阳26、贵农21 和92R 系列材料,分别占本时期育成品种的10.7%、9.8%、6.3%.近年来,育种家创造培育的一批新的种质资源(包括人工合成品种川麦42,SW 系列,R 系列)正在成为新一轮多个骨干亲本系列.
The corner stone parents of 170 registered (recognized) wheat cultivars are analyzed in this paper. It is shown that the corner stone parents of the 58 registered cultivars and the 9 recognized cultivars before year of 2000 belong to Fan 6 and Mianyang No.11 series, respectively; 33 registered cultivars belong to Fan 6 and its total coefficient parentage is 9.25, which accounts for 49.28%; 21 registered cultivars belong to Mianyang No.11 series and the total coefficient parentage is 8.45, which accounts for 31.35%. Years 2001—2013 were a golden period of wheat breeding industry in Sichuan Province, with total 112 registered cultivars for new varieties of wheat, which overcame the weakness of using a single and narrow germplasm resource before 2000. More than 5 registered cultivars of the backbone parents were bred, including Mianyang 26, Guinong 21 and 92R system materials. They accounted for 10.7% , 9.8% , 6.3% of the 112 registered cultivars in this period. In addition, breeders created a batch of new germplasm resources: synthetic cultivar Chuanmai 42, SW system germplasm resources, R system germplasm resources, which started a new round of multiple backbone parent series.
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