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该文以变叶海棠为砧木研究了２６个种类的苹果属植物对褪绿叶斑病毒（ＣＬＳＶ）侵染后的反应。试验结果表明，受ＣＬＳＶ侵染后，２６个种类的苹果属植物嫁接成活率降低，生长量减少，嫁接相对成活率的变化与植物的带毒量有极显著的负相关（ｒ＝－０．９３６１）。对砧木和接穗粗度影响不大，对株高影响明显，其变化与其植株的带毒量有显著的正相关（ｒ＝０．８０４８）。叶片叶绿素含量降低，叶绿素成份ａ／ｂ比值升高。根据上述指标，综合分析和评价了苹果属植物对ＣＬＳＶ的抗性。
In this paper, twenty-seven species of apple plants were tested for their response to chlorotic leaf spot virus (CLSV) infection by using Begonia as a rootstock. The results showed that, after being infected with CLSV, the grafting survival rate of 26 species of apple plants decreased, the growth decreased, the relative survival rate of grafted plants significantly negatively correlated with the virulence (r = -0. 9361). There was a significant positive correlation (r = 0.8048 **) between the change of plant height and the virulence of the plants. Leaf chlorophyll content decreased, chlorophyll content a / b ratio increased. According to the above indexes, the resistance of apple genus to CLSV was comprehensively analyzed and evaluated.