常用月季品种抗黑斑病能力调查与评价

为了解部分月季品种间抗病性差异的原因和筛选出抗黑斑病的月季品种,对北京地区的50个月季品种黑斑病发病情况进行观察和抗病性分类,分析影响月季黑斑病抗性的因素.结果显示:月季分为高抗品种群(HR)5个；中抗品种群(MR)15个；低抗品种群(LR)12个；感病品种群(CS) 14个；严重感病品种群(SS)4个.攀援月季、粉红色系月季和三倍体月季抗性较强.试验结果对于月季抗病育种具有一定参考价值.

Investigation and assessment on black spot resistance of some rose cultivars in common use

Field assessment of black spot resistance in 50 rose cultivars was made and disease resistance was classified.The authors aim to find out the reasons that the resistance to black spot disease differs among different rose cultivars and screen out the cultivars with resistance to black spot disease,and thus to provide the foundation and accumulate experience to breeding work which aims to promote the resistance of rose cultivars.The results showed that the Chinese rose is divided into 5 variety types including 5 high resistant varieties (HR),15 medial resistant varieties (MR),12 low resistant varieties (LR),14 susceptible cultivars (CS),and 4 serious susceptible cultivars (SS).The author also analyzed the effect factors in rose resistance and indicated that climbing Chinese rose,pink Chinese rose,triploid Chinese rose had stronger resistance,which is useful to the study of disease resistance of rose breeding.