胡颓子锈生座孢产孢和孢子萌发特性研究

Sporulation and Conidia Germination Characteristics of Tuberculina elaeagni Mycoparasited on Aecidium elaeagni-umbellatae

研究了牛奶子锈病（Aecidium elaeagni-umbellata）重寄生菌胡颓子锈生座孢（Tuberculinae laeagni）产孢和分生孢子萌发特性。结果表明：葡萄糖、蔗糖等5种碳源中以葡萄糖产孢最好；NH4Cl、KNO3等7种氨源中以蛋白胨产孢最好；25℃、pH值6和光照等争件适合产孢。25℃为分生孢子萌发最适温度；在相对湿度65％以上的条件下，分生孢子均能萌发，以水滴中萌发最好，萌发率达80，4％。DH值5～6和光照争件有利于孢子萌发，孢子致死温度为43℃10min。

Sporulation and eonidia germination characteristics of Tuberculina elaeagni mycoparasited of Aecidium elaeagni-unbellatae were studied. The results showed that glucose and peptone were the best for spomlation among the tested five carbon sources and seven nitrogen sourees, The mycoparasite could sporulate best at 25 ℃ and pH 6, respectively. Furthermore, the light could promote the sporulation. For its conidia gemination, 25℃ was the optimum, When relative humidity（RH） for gennination was above 65%, conidia could germinate and the rate of conidia germination was the highest in water drops, The optimal pH range was 5 - 6 and light was good for germination. Its lethal temperature was 43℃ for 10 min.