关键词: 水稻, 品种, 分析

Abstract: Breeding of the 152 rice varieties that were examined and approved during 2001 and 2010 in Fujian mainly involved with sterile lines and varieties with good comprehensive traits.Our analysis indicated that: There were 133 three-line-hybrid combinations(i.e.,87.5% of total),13 two-line-hybrid combinations(i.e.,8.6%),6 conventional new varieties(i.e.,3.9%),and the three-line method remained to be the major breeding method for rice;Of 146 hybrid rice combinations,55 sterile lines were used,among which three-line-sterile lines were 47(i.e.,85.5%),two-line-sterile lines were 8(i.e.,14.5%),and each of the 8 sterile lines,such as II-32 A,Long Tefu A,Gang 46A,D62A,GufengA,TianfengA,Jin23A,SE21S,etc.,was applied to make over 5 hybrid rice combinations,which were the major sterile lines in the province;and According to the established criteria,the yield of a newly bred variety should at least increase by 6%,its resistance to rice blast be above moderate level,the rice quality be equal or better than the third-class eating Indica rice standard issued by the Department of Agriculture,and its amylose content be 15%-20%;by comparing to CK,there were 10 varieties,i.e.,IIyoushen98,Leyou 94,eIIyou 315,IIyou 039,Minfengyou 3301,Qiuyou 125,Yuyou No.1,Jiangyouming 62,Liangyouhang No.2,Jinnon 2 you 3,etc.,that met three of the criteria,and only Jinnon 2 you 3 met all four criteria.These varieties,due to their great yield potential and high economic values,could be recommended for large-scale plantation.

Key words: Rice, variety, analysis