| 苜蓿根腐病菌(Fusarium solani)生物学特性研究 |
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| 引用本文： | 李万苍,李文明,孟有儒.苜蓿根腐病菌(Fusarium solani)生物学特性研究[J].草业学报,2005,14(4):106-110. |
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| 作者姓名： | 李万苍 李文明 孟有儒 |
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| 作者单位： | 1. 张掖市玉米原种场,甘肃,张掖,734000
2. 河西学院,甘肃,张掖,734000 |
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| 摘 要： | 主要研究了温度、湿度、pH值、光照、营养对苜蓿根腐病菌(Fusarium solani)生长、产孢和孢子萌发的影响.该病菌菌丝生长的温度范围为8～38℃,最适20～28℃;产生分生孢子的温度范围为10～38℃,最适25℃;分生孢子萌发的温度范围为8～38℃,最适25～32℃.在pH值5～10的范围内该菌均能生长和产孢,菌丝生长最适pH值5～9;分生孢子产生和萌发最适pH值6～7.分生孢子在饱和湿度或水滴中萌发快,相对湿度低于85%时不能萌发.光照处理对该菌生长无显著影响.分生孢子的致死温度为50℃,10 min或55℃,5 min,菌丝体的致死温度为60℃,30 min或65℃,5 min.
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| 关 键 词： | 茄镰孢 生物学特性 苜蓿 苜蓿 根腐病菌 solani Fusarium 生物学特性 研究 root characteristics Biological 菌丝体 致死温度 光照处理 相对湿度 饱和湿度 温度范围 分生孢子 菌丝生长 影响 孢子萌发 产孢 |
| 文章编号： | 1004-5759(2005)04-0106-05 |
| 修稿时间： | 2004年7月28日 |
Biological characteristics of dry root rot (Fusarium solani ) of Medicago sativa |
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| LI Wan-cang,LI Wen-ming,MENG You-ru.Biological characteristics of dry root rot (Fusarium solani ) of Medicago sativa[J].Acta Prataculturae Sinica,2005,14(4):106-110. |
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| Authors: | LI Wan-cang LI Wen-ming MENG You-ru |
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| Abstract: | This study investigated the effects of temperature, light carbon source and moisture on the growth, sporulation and conidial germination of Medicago sativa dry root rot fungus (Fusarium solani). Results showed mycelial growth occurred in the temperature range of 8-38, with optimal growth occurring between 20-28. Mycelial growth was shown to occur in the pH range of 5-10, with the optimum growth occurring within the 5-9 range. Sporulation occurred in the temperature range of 10-38, with an optimum temperature range for sporulation between 25-32. The pH range in which sporulation could occur ranged from 5-10, with the optimum sporulation within the 6-7 pH range. Conidial germination occurred in the temperature range of 10-38, with optimal conidial germination occurring between 25-32. The pH in which conidial germination occurred was from 5-10, with the optimum germination with the 6-7 pH range. The treatment of darkness with fluorescent light or with alternative fluorescent light did not show any significant effects on mycelial growth, sporulation or conidial germination. The percentage of conidial germination was highest when relative humidity reached 100%, or in water. The lethal temperature for spores was 50 at a duration of 10 minutes, while the lethal temperature for the mycelium was 60 at a duration of 30 minutes. |
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| Keywords: | Fusarium solani biological characteristic Medicago sativa |
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