The resistance of a rice germplasm 911A② to the rice gall midge(GM) was identified and genetically analyzed. 911A② was used as male parent to hybridize, test cross with Jinggui, TN1, W1263（Gm1）, IET2911（Gm2）, BG4041（gm3）, OB677（Gm4）, ARC5984（Gm5）and Duokang 1（Gm6）, and their F1 selfpollinated， respectively. The resistance of all parental lines and the populations of F1, BC1F1, F2 to the rice gall midge were identified. The resullts showed that 911A② and all F1 resist to rice gall midge biotype Ⅳ of China. The segregation ratio of resistant plants to sensitive ones to rice gall midge biotype Ⅳ of China of BC1F1 and F2 accorded with 1(resistant)∶3(sensitive) and 9(resistant)∶7(sensitive) rule by χ2 test, suggesting that the resistance of 911A② to rice gall midge biotype Ⅳ of China was controlled by two dominant genes, which was nonallelic to the known resistant genes Gm1, Gm2, gm3, Gm4, Gm5and Gm6, as well as the other five resistant genes Gm7，Gm8，Gm9，Gm10, Gm11（t）. It suggested that the two genes are new rice gall midge resistance genes.
LU Jiashi1,2, HE Longfei1,*, XU Jing1, XU Chunyan1, LI Chuangzhen1, WEI Sumei3
. Identification and Genetic Analysis of Resistance of a Rice Germplasm 911A② to Rice Gall Midges[J]. Chinese Journal OF Rice Science, 2012
, 26(4)
: 506
-510
.
DOI: 10.3969/j.issn.10017216.2012.04.018
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