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本研究鉴定了中国冬油菜区18个省(市、自市区)选育和栽培的甘蓝型品种238份,白菜型品种26份对病毒病的感染性。甘蓝型品种大部分为低抗或低感类型,感染指数为0.5—1.5,该类品种占供试品种总数的73.69％;其次是感染指数>1.5的高感品种,它们占总数的19.75％;感染指数<0.5的高抗品种很少,仅占7.56％。白菜型品种基本上都属于高感类型。作者认为这些结果基本反映了中国冬油菜区栽培品种对病毒病的感染性。在10省11个地点经过1—7年试验,证明除云南省之外,其他各冬油菜区油菜苗期病毒病与角果发育期病毒病均成极显著正相关,586个成对样本苗期发病率与角果发育期发病率的相关系数为0.780。说明在这些地区用影响苗期发病的因素来预测异年油菜角果发育期病害是有可能的。
This study identified 238 Chinese cabbage cultivars and cultivars from 18 provinces (municipalities, autonomous regions) in the Chinese winter rapeseed area, and 26 cabbage-type cultivars that were susceptible to viral diseases. Most of the cultivars were low resistant or low susceptible. The infection index was 0.5-1.5, which accounted for 73.69% of the total cultivars tested. Secondly, the susceptible cultivars with infection index> 1.5 accounted for 19.75% of the total cultivars. Infectious index <0.5 of the high resistance varieties is very small, accounting for only 7.56%. Cabbage type basically belong to the type of high sense. The authors believe these results basically reflect the infectivity of the cultivars in China’s winter rape cultivars to viral diseases. After 1-7 years in 11 provinces of 10 provinces, it was proved that except for Yunnan Province, the other winter rapeseed rapeseed virus disease and pododevelopment virus disease were highly significant positive correlation, 586 pairs of sample seedlings The correlation coefficient between the incidence of disease and the incidence of pod development was 0.780. This suggests that it is possible to predict the developmental stages of rape in the off-year rape with the factors influencing seedling incidence in these areas.