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为了鉴定出抗褐飞虱的水稻品种,引进2904个农家品种和育成品种及383个日本自己的农家品种。通过大量秧苗饲养褐飞虱生物型Ⅰ(野生)的方法来筛选抗虫品种。除了育成品种外,发现大多数抗虫的农家品种,来自斯里兰卡和南印度,只有少数品种来自印度、缅甸和泰国。亚州广泛分布耐虫而不抗虫的品种。而在欧洲、美洲、澳洲的品种中,没有检出一个抗虫品种。作者把生物型
In order to identify rice varieties resistant to BPH, 2904 farm-raised varieties and bred varieties and 383 Japanese own farm-type varieties were introduced. Insect-resistant varieties were screened by feeding a large number of seedlings with the biotype I of wild brown planthopper (wild). In addition to bred varieties, most insect-resistant peasant varieties were found from Sri Lanka and South India, with only a few varieties coming from India, Myanmar and Thailand. Asia widely distributed insect-resistant insect-resistant varieties. In the varieties of Europe, America and Australia, no one insect-resistant species was detected. The author of biotypes