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据日本1986年修订的《有害动植物发生预察事业调查实施基准》中,在稻瘟病的预测调查办法内,对测定田间稻瘟病菌优势小种及未知新的小种的变化趋势,提出一种简易的测定方法,现介绍如下:供试品种:由每品种只含一个基因的9个鉴别品种(见下表)和附加的参考品种组成,参考品种是指区域内特有的抗病基因所对应的新品种。测定方法:把在瓷盘上发芽的鉴别品种幼苗,放在预测田的一角,让幼苗在田间自然暴
According to the “Implementation Benchmark for Investigation of Preliminary Investigation of Noxious Fauna and Flora”, which was revised by Japan in 1986, in the method of forecasting and investigation of rice blast, the trend of determining the dominant races of M. grisea and unknown new races is proposed A simple method of determination, are described below: Varieties for testing: from each species contains only a single gene 9 differential varieties (see table below) and additional reference species composition, the reference species is the region’s unique resistance to disease genes Corresponding to the new breed. Determination: The germination of the identification of varieties of porcelain seedlings, on the corner of the forecast field, so that seedlings in the field natural violence