摘要
金瓜贮藏期主要病害有炭疽病和湿腐病。炭疽病菌和湿腐病菌菌丝生长最适温度均为28℃;分生孢子萌发最适温度,炭疽菌为20~30℃,湿腐菌为25~35℃,分生孢子的致死温度,炭疽菌为52℃,湿腐菌为53℃。菌丝生长和孢子萌发最适宜pH值,炭疽菌分别为7~8和5~6,湿腐菌分别为8~10和4左右。以10%的寄主汁液最能刺激孢子萌发。化学药剂以多菌灵1000倍和噻菌灵1000倍对炭疽菌菌丝抑菌作用明显,施保功1000倍对湿腐菌菌丝有效。
Laboratory studies show the optimum temperature for the growth of fungus' mycelium of C. lagenar-ium and F. solani optimum temperature on conidiospore germination ranged from 20℃ to 30tin C. lagenari-um ,from 25℃ to 35℃ in F. solani. Treated in 10 minutes, the conidiospores can't germinate C. lagenarium at 52℃ and F. solani at 5313 . The optimum pH is 7 - 8 and 5 - 6 in C. angenarium, 8 -10 and 4 in F. solani in mycelial growth and conidiospore germination. 10% host juice is the best for the conidiospore germination. Some fungicides can be very effective in controlling these diseases of mycelial growth and conidiospore germination.
关键词
金瓜
贮藏期病害
炭疽病菌
湿腐病菌
生物学特性
Cucurbitaovifer
Postharvest diseases\Colletotrichum lagenarium
Fusarium solani
Biological characters