Physiological Responses of Varieties of Catharanthus roseus G.Don After Infected With Phytophthora nicotiana(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

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

Author(s):: WANG Wei; HE Manmei; NI Jianzhong; LIU Wen; DAI Seping; (Guangzhou Municipal Key Laboratory of Landscape Architecture，Guangzhou Institute of Forestry and Landscape Gardening，Guangzhou，Guangdong 510405)

Keywords:: Catharanthus roseus G.Don; Phytophthora nicotiana; physiological index; resistance mechanism

Abstract:: 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.

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Last Update: 2016-11-07