摘要
广东中山省未成熟“中把”蕉果发生的炭疽病,是由香蕉刺盘孢的一个强毒力菌系所致。该菌系在田间明显为害青蕉,在六至七成肉度的果指上引起深褐色、中央纵裂的梭形大斑。人工接种可使有伤口的苹果发病,轻微为害有伤口的橘子,但不为害甜橙和椪柑谀仕犸ё龅吹呐嘌仙ち己谩7稚咦釉诠ぶ褐忻确⑹笨闪蕉嗣确ⅰ?农用高脂膜水乳剂200倍液与多菌灵1000ppm混用,有很大的增效作用。从抽蕾开花期起开始喷药,每隔10天1次,连喷4次,只喷果穗,可有效减轻香蕉炭疽病的为害,货架期第5天的防效达90.12%。
According to the pathogenicity, morphological, and cultural studies, anthracnose of green fruits of 'Zhong Ba' banana which was found occurring in Zhong Shan city of Guangdong Province showed to be caused by a virulent strain of Colletotrichum musae (Eerk. et Curt.) Arx. This strain caused large, lenticular, crac■ed lesions on the green fruits with 60-70% maturity. The inoculation test showed that this strain could infect the wounded apple fruits (Malus pumila) moderately, and wounded citrus fruits (Citrus deliciosa) slightly, but couldn't infect the wounded sweet orange (Citrus sinensis) and King orane (Citrus nobilis). The fungus grew better on the ■edium with an nionium citrate as nitrogen source and many conidia produced the germ tubes bipolarly in the extract of skin of green fruit.It was demonstrated that the application of a mixture of a nonomolecular film-forming substance (1: 200, Fearl River Electric-Chemical Manufactory, Guangzhou) and 50% MLC W.P. (1000 ppm, Dupont Co., U.S.A) could increase greatly the control effect. The first spray was applied at the beginning of blooming period, 4 times at 10 days intervals, only the flowers and fruits were sprayed. It showed 90.12% control of anthracnose of banana at ■rarketable stage in 5 days.
出处
《植物病理学报》
CAS
CSCD
北大核心
1990年第3期179-183,共5页
Acta Phytopathologica Sinica
