The resistance to brown planthopper(BPH)of ten main rice cultivars in Anhui Province was identified by the improved In-ternational Rice Research Institute standard seedbox screening technique and mature plant identification method.The results at the seedling stage showed that seven tested cultivars were highly susceptible to BPH at grade 9,and three tested cultivars were susceptible to BPH at grade 7.The BPH resistance identification results of the same cultivar at the mature stage were different from the results of the seedling stage.Among the ten cultivars,six cultivars had higher resistance grade during the mature stage than the seedling stage,while the remaining four cultivars remained unchanged.
维普
万方数据