A Cucumber Disease Caused by Alternaria alternata and its Control
A Cucumber Disease Caused by Alternaria alternata and its Control
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DOI：
10.1111/j.1439-0434.1988.tb00976.x
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发表时间：
1988-04
影响因子：
1.5
通讯作者：
D. Vakalounakis;N. Malathrakis
中科院分区：
文献类型：
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作者：
D. Vakalounakis;N. Malathrakis
黄瓜严重叶斑病是一种由链格孢（Alternaria alternata（Fr.）Keissler最近在克里特岛的塑料房子里被记录下来。病变范围从针尖大小到直径超过5 cm，大部分区域上有坏死组织，周围有黄色区域。病原菌在PDA上5 °C ~ 40 °C生长良好，孢子萌发温度在10 °C以下~ 37 °C以上。两种情况下的最佳温度都接近26 °C。在13种杀菌剂中，对孢子萌发的抑制作用最强的是烯啶钠、乙烯利、氟啶菌胺、克菌丹和灭菌丹，对菌丝生长的抑制作用最强的是异菌脲、烯啶钠和氟啶菌胺。在接种前24 h施用于两叶黄瓜植株上的25种杀菌剂中，代森锰、乙烯利、氟啶菌胺和百菌清的效果最好。当最后的杀菌剂，加上代森锰锌，接种后24小时，只有代森锰锌是有效的。在温室试验中，异菌脲、咪鲜胺锰复合物、百菌清、氟啶菌胺、双胍菌素、代森锰和代森锰对病害的防治效果最好，代森锰锌效果较差。当地的黄瓜品种。克诺索斯和荷兰F1杂交种Evadan、Frella、Herta、Malfa、Mazourka、Pepinex 69和Renova都对感染敏感。
A severe leaf spot disease of cucumber caused by a pathotype of Alternaria alternata (Fr.) Keissler was recorded recently in plastic houses in Crete. Lesions ranged in size of a pin point to over 5 cm in diameter, with necrotic tissue on most of their area and a surrounding yellow zone. The pathogen grew satisfactorily on PDA at temperatures between 5 °C–40 °C and spore germination occurred in the range less than 10 °C to over 37 °C. Optimum temperature in both cases was near 26 °C. Of,13 fungicides tested in vitro, sodium omadine, etem, dichlofluanid, captan and folpet were the most inhibitory on spore germination, and iprodione, sodium omadine and dichlofluanid on mycelial growth. Of 25 fungicides applied on two leaf cucumber plants 24 h before inoculation, maneb, etem, dichlofluanid and chlorothalonil were the most effective. When the last fungicides, plus mancozeb, were applied 24 h after inoculation only maneb was effective. In greenhouse experiments, iprodione, prochloraz-manganese-complex, chlorothalonil, dichlofluanid, guazatine, maneb and etem were the most effective for disease control, while mancozeb was less effective. The local cucumber cv. Knossos and the Dutch F1 hybrids Evadan, Frella, Herta, Malfa, Mazourka, Pepinex 69 and Renova were all susceptible to infection.