河南审定小麦品种的骨干亲本分析

对河南审定的122个小麦品种的骨干亲本进行了分析,结果表明,2000年之前审定小麦品种的亲本系统为阿夫,丰产3号,抗辉红,St 2422/464,高加索,内乡5号,山前麦,碧蚂1号和玛拉,共涉及到66个审定品种,占94.29%,亲缘系数总和为32.24,占46.06%.这9个亲本在16个主要推广品种中的亲缘系数总和为7.89,占49.31%.2000年之后审定的小麦品种主要是利用中早期审定的品种作为亲本选育成的,共涉及到43个品种,占82.69%,亲缘系数总和为29.08,占55.92%,主要推广品种豫麦21号,豫麦2号,豫麦13号,豫麦25号和豫麦18号成为骨干亲本.豫麦2号在1990年以后审定品种的亲缘关系中占有突出地位,共涉及到43个品种,成为利用率最高的骨干亲本.

An Analysis of the Corner Stone Parents for Registered Wheat (Triticum aestivum L.) Cultivars in Henan Province

The corner stone parents of 122 registered wheat cultivars were analyzed in this paper.Results show that the corner stone parents of the 70 registered cultivars before Year 2000 were Funo,Fengchan 3,Kanghuihong,St 2422/464,Kavkaz,Neixiang 5,Predgovnaja,Bima 2 and Mara.66 registered cultivars were related to them and their total coefficient of parentage was 32.24,which accounted for 46.06%.In the 16 main released cultivars,the total coefficient of parentage was 7.89,which accounted for 49.31%.For the 52 registered cultivars after Year 2000,43 were bred by using the early registered cultivars,whose total coefficient of parentage was 29.08,and the corner stone parents were Yumai 21,Yumai 2,Yumai 13,Yumai 25 and Yumai 18.Yumai 2 played an outstanding role in the registered cultivars after Year 1990.The fact that 43 cultivars were related to it makes it the most highly utilized corner stone parent.