【摘要】 稻曲病菌的厚垣孢子与病菌的来源和传播有密切的关系,本文报道了厚垣孢子发芽力的研究,结果:(1)黄色粉堆稻曲厚垣孢子具有很快的发芽速率和强的发芽力。墨绿色粉堆稻曲厚垣孢子,发芽速率很缓慢,为越冬的厚垣孢子。(2)越冬厚垣孢经过10个月后,仍然能发芽,是重要的菌源。(3)一些营养物可以促进和提高越冬厚垣孢子的发芽率,特别是稻的花粉对它的发芽是很有利的。(4)高温处理明显的影响越冬厚垣孢子的发芽,45℃几乎不能发芽,50℃为致死温度.更多还原

【Abstract】 The chlamydospores of the pathogenic fungus of the rice false smut(Ustila-ginoidea virens)have close relationship to this disease as being the pathogenicsource and transmisson factor.This paper reports the studies on the chlamy-dospore germinating power.The results show:(1)The chlamydospores in the yellow powdery mass of the rice false smuthave the quicker germination rate and the stronger germination power.Thechlamydospores in the dark green powdery mass of the rice false smut have theslower germination rate.They are the overwintering chlamydospores.(2)The overwintering chlamydospores can germinate in 10 months.Theyare the important pathogenic source.(3)Some nutrients may promote the germination and raise the germinationpercentage of the overwintering chlamydospores,among them the pollen is themost favorable.(4)The high temperature treatment has a distinct influence on the germi-nation of the overwintering chlamydospores.The chlamydospores treated by thetemperature 45℃ almost can not germinate.The temperature 50℃ is their deathpoint.更多还原