长春花抗疫病品种比较及遭受疫病危害后的生理响应  

Physiological Responses of Varieties of Catharanthus roseus G. Don After Infected With Phytophthora nicotiana

作　　者：王伟 贺漫媚 倪建中 刘文 代色平 

机构地区：[1]广州市林业和园林科学研究院,广州市景观建筑重点实验室,广东广州510405

出　　处：《北方园艺》2016年第19期83-88,共6页Northern Horticulture

基　　金：广州市财政预算资助项目(2061400000086)

摘　　要：以22个进口长春花品系为试材,在自然条件下对其感染疫病不同阶段的生理指标进行测定,研究了不同长春花品系对疫病的抗性。结果表明:进口长春花"太平洋"系列大部分品系均表现出较差的抗疫病能力,而"卡拉"系列均表现出优于"太平洋"及"维特"系列的抗疫病能力。进一步对不同时期、不同长春花品系采样进行生理指标测定,研究长春花在遭受疫病后营养物质和防御酶的动态变化,表明可溶性蛋白质含量与疫病危害等级呈正相关,可溶性糖含量与疫病危害呈负相关;多酚氧化酶随疫病危害活性逐渐升高,不同品种间过氧化酶活性的高低与抗疫病能力无显著相关性。22 Catharanthus roseus G. Don varieties were cultivated in this experiment to study physiological responses of varieties of Catharanthus roseus G. Don after infected with Phytophthora nicotiana. The results showed that most of ＇Taipingyang ＇Catharanthus roseus G. Don varieties were classified as low resistant variety. The varieties ＇Kala＇ showed higher resistant than other series varieties. Several biochemical indexes were tested after different periods when varieties of Catharanthus roseus G. DOn infect with Phytophthora nicotiana. The results revealed that the soluble protein content had the same change trend with resistance level, and the soluble sugar content and resistance level seem to be negatively correlated. According to the research results, the activities of PPO gradually increased with the change of damage time and there were no significant difference between the activities of POD and resistance.

关 键 词：长春花 长春花疫病 生理指标 抗性机制 

分 类 号：S436.81[农业科学—农业昆虫与害虫防治]