| 水葫芦黑斑病菌Alternaria alternata的生物学特性研究 |
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| 引用本文： | 李文文,周喆,尤民生. 水葫芦黑斑病菌Alternaria alternata的生物学特性研究[J]. 华东昆虫学报, 2009, 18(1): 61-65 |
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| 作者姓名： | 李文文 周喆 尤民生 |
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| 作者单位： | 1. 福建农林大学金山学院,福建,福州,350002
2. 福建农林大学应用生态研究所,福建,福州,350002 |
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| 基金项目： | 福建省科技厅发改委重大专项,福建省科技成果转化(6·18)中荷合作项目 |
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| 摘 要： | 在不同试验条件下培养水葫芦黑斑病菌Alternaria alternata菌株，探讨其主要的生物学特性，结果表明：该菌株生长的最佳培养基为PSA，最佳C源为葡萄糖，弱碱性和中性N源对该菌菌丝生长具有明显的促进作用，而酸性N源对其具有抑制作用。菌株生长的最佳pH值为pH7，最适温度为27℃。湿度越大，对菌株生长越有利。
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| 关 键 词： | 生物学特性 黑斑病菌 水葫芦 最佳培养基 菌株生长 最佳pH值 菌丝生长 抑制作用 |
A study of the biological characteristics of an Alternaria alternata strain living on water hyacinth |
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| LI Wen-wen,ZHOU Zhe,YOU Min-sheng. A study of the biological characteristics of an Alternaria alternata strain living on water hyacinth[J]. Entomological Journal of East China, 2009, 18(1): 61-65 |
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| Authors: | LI Wen-wen ZHOU Zhe YOU Min-sheng |
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| Affiliation: | 1. Jinshan Academy, Fujian Agriculture and Forestry University, Fuzhou , Fujian 350002, China; 2. Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China) |
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| Abstract: | Experiments were performed to biologically characterize an isolated Alternaria alternata strain living on water hyacinth. The results indicated that the optimum culture medium for the mycelium growth of A. altcrnata was PSA. Mannitol, glucose and sucrose were suitable carbon sources for mycelium growth. Monosacchafides promoted the highest level of mycclium growth. Weak alkali,,es and neutral levels of nitrogen effectively promoted the growth of mycelium, whereas acid and nitrogen inhibited mycelium growth. The carbon source was sensitive than nitrogen. A. alternata was able to grow well from pH6 - 8, and the optimum pH was pH 7. The optimum temperature for mycclium growth was 27°C. Although humidity had no significant effect on the morphological characteristics of A. alternata, high humidity was able to promote a small amount of mycelium growth. |
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| Keywords: | water hyacinth Alternaria alternata biological characteristics |
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