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在作物的抗病性改良中选择可靠有效的鉴定方法非常重要。本文对禾本科黑枯斑病菌引起的田间小麦黑枯斑病抗性鉴定的3种方法即小区法、旗叶法、倒二叶法进行比较,研究方法涉及到对病株系统标记包括坏死叶面积的百分数和病害严重度等。连续2年对9个亲本品种及杂交后代不同世代的抗性与株高、成熟期的相关分析,小区法受环境影响较大。对抗性基因的遗传组成进一步分析表明,小麦黑枯斑病田间抗性鉴定宜用倒二叶法。
It is important to choose a reliable and effective identification method in crop disease resistance improvement. In this paper, three methods for identifying black spot resistance of wheat caused by blackspot of gramineae, ie cell plot, flag leaf method, and inverted two leaf method, were compared. The research methods involved the identification of diseased plants including necrotic leaves Percentage of area and severity of disease. For two consecutive years, the correlation analysis of resistance and plant height and maturity of nine progeny and their offsprings showed that the community method was greatly affected by the environment. Further analysis of the genetic composition of the resistance genes showed that it is advisable to use the inverted two leaf method to identify the field resistance of wheat black spot disease.