橡胶树棒孢霉落叶病病原菌的生物学特性

通过对橡胶多主棒孢进行生物学特性研究,结果表明:菌丝生长的适宜温度范围为25～30℃,最适温度为30℃;最适pH范围为4～8;菌丝在以麦芽糖为碳源和以KNO3为氮源的培养基上生长最好。分生孢子萌发的适宜温度范围为20～35℃,最适温度为25℃;水滴是孢子萌发的必要条件;在不同的pH条件下分生孢子萌发无明显差异;分生孢子在果糖中萌发率最低。

Biological characteristics of Corynespora cassiicola causing Corynespora leaf fall disease

The biological characteristics of Corynespora cassiicola was reported in this paper. The results showed that the optimum temperature for mycelial growth is 25-30℃, but 30℃ is the most suitable temperature. The optimum pH is 4-8. The mycelium of Corynespora cassiicola grew well on the media with maltose as the carbon sources. KNO_3 is the best nitrogen source. The optimum temperature for conidial germination is 20-35℃, but 25℃ is the most suitable temperature. Water drop is necessary for conidial germination. Conidial germination had no obvious effects between different pH media. Conidia germinated at a lower rate on the media using fruc-tose as the carbon sources.