【目的】明确玛咖根腐病病原菌Fusarium avenaceum ROT-2的生物学特性和最佳的室内抑菌药剂,为玛咖的高产及高品质栽培奠定理论基础。【方法】采用单因素试验法,考察不同培养基配方、不同碳源、氮源、温度、pH、光照与通气条件对燕麦镰刀菌菌丝生长的影响,并选用3种常见农药对病原菌进行室内药剂筛选研究。【结果】马铃薯葡萄糖培养基(PDA)和燕麦培养基(OA)最利于该燕麦镰刀菌的生长,菌落直径大且菌丝浓密,碳源和氮源以淀粉和硝酸钠较适宜,最适生长温度为21℃,致死温度为55℃,在p H 4~10条件下均生长良好,在p H为6时生长最佳,黑暗及不通气条件更有利于燕麦镰刀菌丝生长。【结论】在供试的3种药剂中,80%代森锰锌抑菌效果最好,在质量浓度1.00 mg/m L时相对抑菌率为88.8%,EC50为0.140 9mg/m L。
【英文摘要】
[Purpose] Our aim was to elucidate the biological characteristics and suitable fungicides for the pathogen of root rot on maca and to provide theoretical basis for high yield and high quality cultivation of maca. [Method] The mycelium growth of F. avenaceum ROT-2 were studied through single factor test method under different conditions including different culture medium,different carbon source,nitrogen source,temperature,p H,lighting and ventilation conditions. In addition,the fungicides against the pathoge...
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