| 马蹄金褐色叶斑病菌的生物学特性 |
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| 引用本文： | 方芳,黄云,干友民,秦芸.马蹄金褐色叶斑病菌的生物学特性[J].四川农业大学学报,2007,25(4):388-391. |
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| 作者姓名： | 方芳 黄云 干友民 秦芸 |
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| 作者单位： | 四川农业大学,林学园艺学院,四川,雅安,625014 |
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| 摘 要： | 马蹄金褐色叶斑病菌(Pyrenophora dichondrae sp.nov.)在PDA上生长和产孢最好,菌丝生长和产孢的适温为25～28℃,适宜pH5～7,全黑暗促进产孢,全光照促进菌丝生长。对碳源的利用以葡萄糖最好,麦芽糖最差;对氮源的利用以硝酸钙最好,氯化铵最差。孢子萌发的最适温度为20～28℃,最适相对湿度为90%～100%,最适pH6～8,最适于孢子萌发的碳源为葡萄糖,氮源是硝酸钠。子囊孢子致死温度是49℃。
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| 关 键 词： | 马蹄金 褐色叶斑病 马蹄金核腔菌 生物学特性 |
| 文章编号： | 1000-2650（2007）04-0388-04 |
| 收稿时间： | 2007-04-04 |
| 修稿时间： | 2007年4月4日 |
Biological Characteristics of Pyrenophora dichondrae sp.nov |
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| FANG Fang,HUANG Yun,GAN You-min,QIN Yun.Biological Characteristics of Pyrenophora dichondrae sp.nov[J].Journal of Sichuan Agricultural University,2007,25(4):388-391. |
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| Authors: | FANG Fang HUANG Yun GAN You-min QIN Yun |
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| Abstract: | For the growth and ascospore formation of Pyrenophora dichondrae sp.nov.,the best medium was PDA,the optimum temperature was 25～28 ℃ and the optimum pH was 5～7.Complete darkness promoted ascospore formation and complete illumination promoted hypha growth.The pathogen could make use of many kinds of carbohydrates,and dextrose seemed to be the best C source,while malt sugar the poorest.Calcium nitrate was the best N source,while ammonium chloride was the poorest.For ascospore germination of the pathogen,the optimum temperature and relative humidity(RH) were 20～28 ℃ and 90%～100% respectively.The optimum pH for ascospore germination was in the range of 6～8.For ascospore germination of the pathogen,the best C source was dextrose and N source was sodium nitrate.The thermal death point of the ascospore was 49 ℃. |
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| Keywords: | Dichondra repens brown leaf blight Pyrenophora dichondrae sp nov biological characteristics |
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