| 新番茄粉孢菌Oidium neolycopersici生物学特性的研究 |
| Biological characteristics of tomato powdery mildew Oidium neolycopersici |
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| 中文关键词:番茄，白粉病，孢子萌发，碳源，氮源 |
| 英文关键词:tomato, powdery mildew, spore germination, carbon source, nitrogen source |
| 基金项目:国家自然科学基金（No. 31170013） |
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| 中文摘要: |
| 新番茄粉孢菌Oidium neolycopersici是近几年引起番茄白粉病的主要病原菌。在国内首次对该菌的生物学特性进行了研究。结果表明：新番茄粉孢菌分生孢子萌发的适宜温度范围为20－25℃，最适相对湿度范围为80%－100%，在水滴中不能萌发；该菌对光照条件和酸碱度的要求不严格，在pH3－12时其萌发率均能达到90%以上；在碳氮源利用方面，该菌分生孢子对各种碳源均能利用，以甘露糖和半乳糖效果最好；氮源以硝态氮（硝酸钾）为佳，铵态氮、有机态氮对其萌发有抑制作用；分生孢子萌发的致死温度为44℃ 10min。 |
| 英文摘要: |
| Biological characteristics of Oidium neolycopersici, the main agent causing tomato powdery mildew, were investigated. The test revealed that the conidia germinated at the optimal temperature of 20－25℃ and the optimal relative humidity of 80%－100%, but failed to germinate in water drop. It was also found that the conidial germination had no strict requirement for illumination and pH value. They could germinate at pH3－12 with above 90% germination percentage. The fungus could utilize various carbon sources, and mannitol and galactose are the best of all. Among nitrogen sources, NO3-N (nitrate) is the best, but NH4-N and organic nitrogen could inhibit the conidial germination. The lethal temperature for conidial germination was 44℃ for 10min. |
| 刘淑艳,刘微,姜文涛. 新番茄粉孢菌Oidium neolycopersici生物学特性的研究[J]. 菌物学报, 2012, 31(1): 68-73 |
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