1977年11—12月,在印度喀拉拉邦怀纳德地区,发现小豆蔻[Elettaria cardamomum(L.)Maton]植株的绿色蒴果上有以病斑为特点的病症。起初,蒴果外皮出现淡红褐色斑点。接着病斑扩大,变成淡黄白色,中心稍下陷;周缘仍为淡红褐色。病斑一般稍带圆形,但有时也有略呈长形的。大小为1—4毫米。重病时,蒴果干枯。在雨期,染病蒴果会腐烂。用查贝克氏琼脂培养基培养病果时,能分离出一种镰刀菌。人工接种试验证明,此菌就是病原 From November to December 1977, it was found that green capsules of the plant Elettaria cardamomum (L.) Maton had a disease characterized by a lesion in the Naenad area of ​​Kerala, India. Initially, the capsule skin appear reddish brown spots. Then lesion expansion, into a yellowish white, slightly sagged center; peripheral edge is still reddish brown. Lesions usually slightly rounded, but sometimes slightly elongated. 1-4 mm in size. Severe illness, the capsule dry. In the rain, the capsule will rot. A Fusarium can be isolated by culturing the fruit with Charbeck’s agar. The artificial inoculation test proves that this bacterium is the pathogen