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番茄早疫病菌不同菌株产孢条件及致病力研究

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摘要 从番茄早疫病病斑上分离到4个菌落类型不同的致病菌,S1在PSA培养基上可直接产孢;S2只有在PDA培养基、玉米培养基上培养7 d菌落长满皿后,分别刮去表面菌丝,用无菌水冲洗表面,紫外线照射30 min,继续培养并间断加光,变温培养18 d可产少量孢子;S4只有在蔗糖为7 g的PSA中培养时冷处理5 d,无光继续培养,可产较多孢子,且孢子中30%的喙有分枝,成2分杈;S3未产孢。近成熟果是致病性测定最好的离体试验材料。
出处 《农业科技通讯》 2012年第8期145-147,共3页
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