| 草莓枯萎病菌的生物学特性 |
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| 引用本文： | 曾富春,黄云,赵艳琴,马淑青.草莓枯萎病菌的生物学特性[J].四川农业大学学报,2006,24(2):156-160. |
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| 作者姓名： | 曾富春 黄云 赵艳琴 马淑青 |
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| 作者单位： | 四川农业大学,农学院,四川,雅安,625014 |
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| 摘 要： | 草莓枯萎病病原为尖孢镰刀菌草莓专化型(Fusarium oxysporumf.sp.fragariae)。生物学特性研究表明,草莓枯萎病菌在PSA上生长和产孢最好,菌丝生长和产孢的适温为25~30℃,适宜pH 4~6,全光照可促进产孢。对碳源的利用,麦芽糖最好,乳糖最差;对氮源的利用,酵母膏最好,尿素最差。孢子萌发的适温为20~30℃,最适28℃,高于40℃和低于5℃不能萌发,RH在90%~100%均能萌发,在水滴中萌发率最高,低于90%不萌发;萌发最适pH 4~6,高于pH 8不萌发,光照有利于孢子萌发,最适孢子萌发的碳源是乳糖,氮源是牛肉膏。
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| 关 键 词： | 草莓 枯萎病 尖孢镰刀菌 生物学特性 |
| 文章编号： | 1000-2650（2006）02-0156-05 |
| 收稿时间： | 2006-02-18 |
| 修稿时间： | 2006年2月18日 |
Biological Characteristics of Strawberry Fusarium Wilt |
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| ZENG Fu-chun,HUANG Yun,ZHAO Yan-qin,MA Shu-qing.Biological Characteristics of Strawberry Fusarium Wilt[J].Journal of Sichuan Agricultural University,2006,24(2):156-160. |
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| Authors: | ZENG Fu-chun HUANG Yun ZHAO Yan-qin MA Shu-qing |
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| Institution: | College of Agriculture, Sichuan Agricultural University, Yaan 625014, Sichuan, China |
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| Abstract: | 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. |
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| Keywords: | strawberry Fusarium wilt Fusarium oxysporum f sp fragariae biological characteristics |
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