【摘要】 对云南景洪发生的澳洲坚果果实褐斑病进行了病原菌分离鉴定和生物学特性研究。经致病性测定、形态学和分子生物学鉴定,病原菌为Calonectria pentaseptata。生物学特性研究表明,该菌菌丝生长的适温为25～30℃,孢子萌发的适温为20～25℃,光照对菌丝生长影响不明显,紫外光对分生孢子的萌发有显著影响,不同的糖溶液可促进分生孢子的萌发。更多还原

【Abstract】 The pathogen causing macadamia nut brown spot disease in Jinghong, Yunnan province was isolated and identified and their biological characteristics were studied. The pathogen was identified as Calonectria pentaseptata by pathogenicity test, morphology and molecular biology. The study of biological characteristics showed that the suitable temperature for mycelium growth was 25-30℃, and the suitable temperature for spore germination was 20-25℃. The light condition had no obvious effect on mycelium growth. Ultraviolet light had significant effect on conidial germination. Different sugars could promote conidial germination.更多还原