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本研究对9个赤霉病抗性不同小麦品种采用赤霉病菌分生孢子悬浮液以单花针注法进行了田间和温室抗病性鉴定;测定了各品种的胚性愈伤组织和盛花期麦穗分别经赤霉病菌毒素和分生孢子接种前后SOD活性的变化。结果表明,各品种SOD活性与其对赤霉病抗性呈极显著的正相关。接种后寄主的SOD活性均有提高,抗病品种比感病品种提高幅度大,且有新的同工酶带出现。抗病品种望水白比感病品种Alondra“S”多出两条SOD同工酶谱带。SOD在小麦抗赤霉病上可能起积极作用,其活性有可能作为鉴定小麦抗赤霉病的一种生理生化指标。
In this study, nine wheat cultivars with different resistance to Fusarium head blight were used to identify the disease resistance of Fusarium graminearum spores suspension by single needle injection. The embryogenic callus Changes of SOD Activity in Florescence Wheat Ear Before and After inoculation with Fusarium graminearum Toxin and Conidia. The results showed that there was a significant positive correlation between SOD activity and scab resistance. After inoculation, the host SOD activity increased, the resistance varieties increased more than the susceptible varieties, and a new isozyme band appears. Disease resistant varieties Hope water white susceptible variety Alondra “S” more than two SOD isoenzyme bands. SOD may play a positive role in the resistance of wheat to scab and its activity may be used as a physiological and biochemical index to identify wheat scab.