Biological Characteristics of Strawberry Fusarium Wilt
Biological Characteristics of Strawberry Fusarium Wilt
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发表时间：
2006
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通讯作者：
Ma Shu-qing
中科院分区：
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作者：
Ma Shu-qing
从四川草莓上分离到一种草莓枯萎病病原菌--枯萎病病原菌。该菌生长和产孢量最好的培养基为PSA，最适温度为25~30℃，最适pH为4~6。光照可促进孢子形成。病原菌能利用多种碳水化合物，其中以麦芽糖为最佳碳源，以乳糖为最适碳源，以尿素为最差氮源。最适温度为20~30℃，最适相对湿度为90%~100%，最适温度为28℃，滴加湿度为90%。温度高于40℃或低于5℃时，孢子不萌发，相对湿度为90%时，孢子不萌发。孢子萌发的最适pH范围为4~6，高于8的最适pH为8。光照有利于孢子萌发。
Fusarium oxysporum f.sp.fragariae,a pathogen of strawberry Fusarium wilt is isolated from strawberry in Sichuan,China.For the growth and spore production of F.oxysporum f.sp.fragariae,the best medium is PSA,the optimum temperature is 25～30?℃ and the optimum pH is 4～6.Whole light promotes spore formation.The pathogen can make use of many kinds of carbohydrates,and malt sugar is the best C source and lactose the poorest.Yeast extract is the best N source whi1e carbamide is the poorest.For spore germination of the pathogen,the optimum temperature and relative humidity(RH) are 20～30?℃ and 90%～100%,respectively,and the best condition is 28?℃ and in drops of water.The spores fail to germinate at temperatures higher than 40?℃ or lower than 5?℃ and at an RH of 90%.The optimum pH for spore germination is in the range of 4～6,and the spores fail to germinate at pH higher than 8.Light is favorable for spore germination.For spore germination of the pathogen,the best C source is lactose and N source is beef extract.