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海南三亚豇豆枯萎病病原菌鉴定及室内药剂筛选

Qiujie LI,Qiwei FU,Shuang WANG,Guosong HUANG,Yong LIU,Qihong YE,Qianxing WU,Xiangyi KING

Chinese Journal of Tropical Agriculture（2017）

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Abstract
通过形态学观察、致病性测定和ITS序列分析对海南三亚地区采集的豇豆枯萎病病原菌进行鉴定,将豇豆枯萎病病原鉴定为尖孢镰刀菌(Fusarium oxysporum).进行10种常用药剂对病原菌的毒力测定试验,结果表明:乙蒜素、甲基硫菌灵、代森锰锌3种药剂对豇豆枯萎病具有较好抑制作用,其EC50值分别为47.42、33.58、74.26μg/mL;EC90值分别为196.69、325.26和581.06μg/mL;a值分别为2.0744、1.2996和1.4344,表明豇豆枯萎病病原菌对该3种药剂较为敏感.
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