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在大田罩笼接虫条件下，考查了５２ 个棉花种质对棉红铃虫的抗性。通过灰关联聚类分析，在ｒ＝０．９５ 时，５２ 个供试棉花种质可分为４ 类及４ 个独立种质。根据４ 类种质抗性鉴定指标数据的平均值，给出了各类种质的抗性特点。对具有一定抗性的２ 类和一独立种质逐一进行抗性评价，结果有５ 个种质属于抗性种质，７个种质有一定的利用价值。
In the field cage cage access conditions, examined 52 cotton germplasm cotton bollworm resistance. By gray relational cluster analysis, when r = 0.95, 52 cotton germplasm tested can be divided into 4 types and 4 independent germplasm. According to the average value of four kinds of germplasm resistance identification indicators, the resistance characteristics of all kinds of germplasm were given. Two species and one independent germplasm with certain resistance were tested for resistance one by one. As a result, five germplasm belonged to resistant germplasm and seven germplasm had certain value.