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《Journal of Henan Agricultural University》 2006-01
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An Analysis of the Corner Stone Parents for Registered Wheat (Triticum aestivum L.) Cultivars in Henan Province

ZHAN Ke-hui~1,GAO Xiang~1,FAN Ping~1,XU Hai-xia~1,REN Guo-min~2,WU Xiu-ting~3(1.College of Agronomy,Henan Agricultural University,Zhengzhou 450002,China; 2.Seed Company of Zhongmu County,Zhongmu 451400,China;3.Shangqiu Seed Management Station,Shangqiu 476000,China)  
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.
【CateGory Index】: S512.1
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