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Antibacterial Activities of Three Kinds of Plant Extracts against Ralstonia solanacearum of Cherry Tomato

作者：

Guihai Chen;Yinhua;Jiannong Cao;Peng-fei Peng-fe

关键词：

extract;a. sativum;extracts;cherry tomato;antibacterial;2

摘要：

Bacterial wilt has become an important obstacle restricting high quality and high yield of cherry tomato. In this paper,the antibacterial activities of extracts from Allium sativum,Ginkgo biloba and Lygodium japonicum against Ralstonia solanacearum were compared. The results indicated that with the increasing concentrations of three extracts,the antibacterial effect enhanced gradually. The lowest concentrations of three extracts with the inhibitory effects significantly higher than that of pesticide control were 20% A. sativum extract,40% G. biloba extract and 60% L. japonicum extract,and the antibacterial effect of 20% A. sativum extract was significantly higher than those of other two plant extracts. The inhibition zone diameters of R. solanacearum strains B2. 1. 2. 2,I1. 2. 1. 1,K5. 1. 1. 1and L5. 3. 1. 2 were 9. 23,8. 30,8. 12 and 9. 19 mm,respectively. The antibacterial effects of three plant extracts reached the maximums when the concentration was 100%,but A. sativum extract had the strongest antibacterial effect against test strains. Therefore,A. sativum can be used as the main raw material for development of plant protectant for cherry tomato.

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Antibacterial Activities of Three Kinds of Plant Extracts against Ralstonia solanacearum of Cherry Tomato

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