Identification and Genetic Analysis of Gall Midge Resistance in Rice Germplasm 91-1A2  

作　　者：LU Jia-shi HE Long-fei XU Jing XU Chun-yan LI Chuang-zhen WEI Su-mei SU Jian-mu 

机构地区：[1]College of Agronomy,Guangxi University [2]Flower Research Institute,Guangxi Academy of Agricultural Science [3]Plant Protection Research Institute,Guangxi Academy of Agricultural Science

出　　处：《Rice science》2013年第1期73-78,共6页水稻科学（英文版）

基　　金：supported by the Natural Science Foundation of Guangxi Province (Grant No.0007015);Science Research and Technology Development Program of Guangxi Province (Grant Nos.0012027 and 9939006);Foundation of New Century Ten-Hundred-Thous and Talents of Guangxi,China (Grant No. 2003213)

摘　　要：Resistance to rice gall midge in rice germplasm 91-1A2 was identified and genetically analyzed F1s of rice population were derived from 91-1A2 which crossed with rice materials Jinggui, TN1, W1263 （Gm1）, IET2911 （Gm2）, BG404-1 （gm3）, OB677 （Gm4）, ARC5984 （Gm5） and Duokang 1 （Gm6） as a male parent. The resistance of all parental lines and F1, BC1F1 and F2 populations to rice gall midge was identified. The results showed that 91-1A2 and all F1s were resistant to Chinese rice gall midge biotype IV. The segregation ratio of resistant plants to susceptible ones in BC1F1 and F2 were accorded with 1：3 and 9：7 rules by X2 test, suggesting that the resistance of 91-1A2 to Chinese rice gall midge biotype IV was controlled by two dominant genes which were new resistance genes, non-allelic to the known rice gall midge resistance genes.Resistance to rice gall midge in rice germplasm 91-1A2 was identified and genetically analyzed F1s of rice population were derived from 91-1A2 which crossed with rice materials Jinggui, TN1, W1263 （Gm1）, IET2911 （Gm2）, BG404-1 （gm3）, OB677 （Gm4）, ARC5984 （Gm5） and Duokang 1 （Gm6） as a male parent. The resistance of all parental lines and F1, BC1F1 and F2 populations to rice gall midge was identified. The results showed that 91-1A2 and all F1s were resistant to Chinese rice gall midge biotype IV. The segregation ratio of resistant plants to susceptible ones in BC1F1 and F2 were accorded with 1：3 and 9：7 rules by X2 test, suggesting that the resistance of 91-1A2 to Chinese rice gall midge biotype IV was controlled by two dominant genes which were new resistance genes, non-allelic to the known rice gall midge resistance genes.

关 键 词：rice gall midge resistance gene genetic analysis 

分 类 号：S511[农业科学—作物学] S435.112.5