Rice Bakanae Disease in Rice Varieties:Resistance Evaluation and Screening
In order to discuss resistance level and field occurrence of rice bakanae disease in the south of Heilongjiang,and screen rice bakanae disease resistant varieties,incidence rate of 60 conventional japonica rice in field were investigated and analyzed,adopting artificial inoculation method.The results indicated that:different rice varieties had different degrees of infestation in the field.The incidence of rice bakanae disease ranged from 0.8%to 39.9%,the average incidence was 14.6%.One rice variety with high resistance and 26 resistant rice varieties were screened out,the resistant varieties accounted for 73.3%,the overall resistance ratio was 11:4.There were differences in rice varieties resistance to rice bakanae disease in southern Heilongjiang Province,resistant varieties should be encouraged to plant to prevent the occurrence of disease in rice production.This study provides some basis for green disease control and rice bakanae disease resistance breeding.
万方数据
维普
