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《Acta Agriculturae Zhejiangensis》 2012-03
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Analysis on registered hybrid rice of Sichuan Province from 2001 to 2010

ZENG Xian-ping1,HE Fang2,LU Jian-qun1,CHEN Lin1(1Crop Research Institute,Sichuan Academy of Agricultural Sciences,Chengdu 610066,China;2 Seed Management Station of Sichuan Province,Chengdu 610041,China)  
The data of registered varieties of Sichuan province from 2001to 2010 were analyzed.The results showed that among 184 registered varieties in Sichuan province in last decade,4% varieties were breakthrough in super high yield.2.7% varieties were accord with the good quality class Ⅱ of national standard,9.5% varieties were accord with good quality class Ⅲ,2.7% were glutinous varieties,3.4% belonged to special purpose varieties and 2.7% were resistant varieties.According to the whole duration of varieties,147 varieties were classified into late-maturity indica hybrid rice,account for 79.9%,4.9% were early-maturity,7.1% were mid-maturity and 10 varieties were special ecotype,account for 6.8%.From 51 male sterile lines used in these varieties,the top five male sterile lines are Yixiang 1A,Ⅱ-32A,D62A,Chuanxiang 29A and G46A,and 54.9% male sterile lines are only bred one registered variety during this period.Meanwhile 98 new restorers were used for these varieties,the top four lines were Shuhui 527,Mianhui 2009,Mianhui 725 and Lehui 188,and only one variety was registered among 77 new restorers.Eight agronomy characters of late-maturity indica hybrid rice were analyzed,and the results showed that four traits including whole growth duration,effective panicle,seed setting and rice blast class expressed an decreasing tendency,and another four traits including plant height,panicle length,grain number per panicle and 1000-grain weight increased.During recent 10 years,the average yield of 147 late-maturity indica hybrid varieties registered in Sichuan province was 8 180.11 kg·hm-2,it increased 4.63% more than that of the control.
【Fund】: 四川省财政基因工程专项资金项目(2011JYGC04011)
【CateGory Index】: S511
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