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2006-2009年,以小麦新品系‘93保4-4’作父本,‘铭贤169’作母本进行杂交,以F1代自交系获得的F2代材料,在苗期分别接种条锈菌主要流行小种‘条中29号’‘条中32号’‘条中33号’‘水11-4’‘水11-7’及白粉病菌‘E05’‘E09’进行抗性遗传分析.结果表明:接种‘条中29号’,F2代植株抗感分离比为170∶16,卡方测验值χ2c为1.43小于χ20.05,1(3.84),符合理论比值15∶1;接种‘条中32号’‘条中33号’‘水11-4’‘水11-7’,F2代植株抗感分离比分别为126∶23、139∶31、273∶51和118∶32,均符合理论比值13∶3,卡方测验值χ2c分别为1.22、0.06、2.05、0.56,均小于χ20.05,1(3.84).接种‘E05’和‘E09’,F2代植株抗感分离比分别为31∶117和32∶147,均符合理论值1∶3,卡方验测值χ2c分别为0.12和0.73,均小于χ20.05(3.84).据此推知新品系‘93保4-4’对条锈菌‘条中29号’的抗性由2对独立遗传的显性抗性基因控制,对‘条中32号’、‘条中33号’、‘水11-4’、‘水11-7’的抗性均由2对相互作用的显性抗性基因控制;对白粉菌‘E05’和‘E09’的抗性均由1对隐性抗性基因控制.
From 2006 to 2009, the new wheat lines ’93 Bao 4-4 ’were used as male parents and’ Mingxian 169 ’as female parents for crosses. The F1 generation inbred lines were inoculated with the stripe rust The major epidemic races of Bacillus thuringiensis were identified in the “No.29”, “No.32”, No.33, “Water 11-4”, “Water 11-7” and “Powdery mildew” E05’’E09 ’. The results showed that the anti-susceptible segregation ratio of F2 plants was 170:16, the chi square test value χ2c was 1.43 less than χ20.05,1 (3.84), in line with the theoretical ratio of 15:1; The number of resistant plants in F2 generation was 126:23, 139:31, 273:51 and 118:32, respectively, which were consistent with Theoretical ratio of 13: 3, chi square test value χ2c were 1.22,0.06,2.05,0.56, were less than χ20.05,1 (3.84) .Inoculation ’E05’ and ’E09’, F2 generation plant anti-sense separation ratio 31:117 and 32:147, respectively, which are in line with the theoretical value of 1: 3 and the chi square test values χ2c were 0.12 and 0.73, respectively, less than χ20.05 (3.84). The resistance of stripe rust ’No.29’ was controlled by two pairs of independently inherited dominant resistance genes The resistance to ’32 in the ’,’ 33 in the ’,’ water 11-4 ’and’ water 11-7 ’were all controlled by two pairs of dominant resistance genes; The resistance of E05 ’and’ E09 ’was controlled by one pair of recessive resistance genes.