根据Ｆｌｏｒ的基因对基因学说，对小麦条锈菌新小种条中３１号及致病类群洛１３—Ⅱ、洛１３—Ⅷ毒性基因进行了推导。结果表明：条中３１号含有毒性基因Ｙｒ—１、２、３、４、７、８、９、１１、１２、１４、１６和Ｓｕ；致病类型洛１３—Ⅱ含有毒性基因Ｙｒ－１、２、７、８、９、１１、１２、１３、１４；洛１３—Ⅷ致病类型含有毒性基因Ｙｒ—１、２、７、９、１１、１２、１３、１４；抗条锈基因Ｙｒ＿５、６、１０未被病菌小种克服。从基因水平证明条中３１号毒谱更宽，毒性更强 According to Flor’s gene-pair gene theory, we deduced the virulence genes of No.31 and the virulence groups 13-Ⅱ and 13-Ⅷ of the new stripe rust of wheat stripe rust. The results showed that: Article 31 contained toxic genes Yr-1, 2, 3, 4, 7, 8, 9, 11, 12, 14, 16 and Su; pathogenic type Luo 13-Ⅱ contained toxic genes Yr- 2, 7, 8, 9, 11, 12, 13, and 14; Los 13-Ⅷ pathogenicity type contains toxic genes Yr-1,2,7,9,11,12,13,14; stripe rust resistance gene Yr_5, 6,10 not overcome by germ-line races. From the gene level proved that the No. 31 drug spectrum wider and more toxic