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浙江大学学报（农业与生命科学版）
Journal of Zhejiang University (Agriculture and Life Sciences)  2006, Vol. 32 Issue (2): 162-167    DOI:
    
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Published: 27 March 2006
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. null. Journal of Zhejiang University (Agriculture and Life Sciences), 2006, 32(2): 162-167.

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https://www.zjujournals.com/agr/     OR     https://www.zjujournals.com/agr/Y2006/V32/I2/162


番红花链格孢菌的分离及其生物学特性研究

从番红花球茎中分离到一种新的内生真菌,经形态学和生长特性等研究初步鉴定其为半知菌类链格孢属链格孢Alternaria alternata(Fr.:Fr.)Keissler.该菌能单独引起番红花球茎腐烂,与青霉菌互作时腐烂程度加重.环境和营养因子对该菌的生长繁殖影响较大:①在10～35℃时,菌丝能生长并形成孢子,最适生长繁殖温度为28℃,孢子的致死温度为65℃;②在pH为4.0～7.0时,菌丝生长、孢子形成和萌发均良好,最适pH值为6.0;③当空气相对湿度(RH)高于80%时,菌丝才能生长并形成孢子,RH高于85%,孢子才能萌发;④能直接利用葡萄糖和蔗糖,淀粉和甘油需分解后才能被良好利用;⑤氮源以有机态氮和硝态氮为佳,铵态氮对其生长繁殖有抑制作用.
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