Corynespora cassiicola leaf spot of pawpaw (Carica papaya L.) in Nigeria

被引：0
作者：
H. O. A. Oluma
E. U. Amuta
机构：
来源：
Mycopathologia | 1999年 / 145卷
关键词：
Corynespora cassiicola; leaf spot; media; Nigeria; papaya; pathogenicity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Leaf spot of pawpaw is hereby reported for the first time in Nigeria. The symptom is characterized by a papery center surrounded by a yellow halo. The causal organism is Corynespora cassiicola. Ripe fruits and abaxial surfaces of the leaves were significantly more susceptible to infection than unripe fruits and adaxial surfaces of leaves. Growth and sporulation of the fungus on several media was investigated. The organism grew faster on malt-extract agar (MEA) derived media and slowest on potato-dextrose agar (PDA) supplemented with thiamine. Sporulation was highest on Czapek-dox agar (CDA) plus biotin and lowest on PDA and PDA + thiamine. Reasons for increased susceptibility of ripe fruit are discussed.
引用
收藏
页码：23 / 27
页数：4
相关论文
共 53 条
[1]  
Oluma HOA(1993) root rot of pawpaw ( Mycopathologia 123 111-115
[2]  
Oladiran AO.(1957) L.) in Nigeria Queensland Dept Agric Rep 1958 58-59
[3]  
Simmonds JH.(1981)Science branch, plant pathology Sci Cult 47 71-84
[4]  
Chaudhury AK.(1980)Incidence of Ciencia Y Tecnica en la Agricultura Protection de Plantes 3 77-14
[5]  
Ray HSG.(1981) I on tomato fruit in West Bengal Problem de protectia plantelor 9 9-13
[6]  
Sandoval I.(1965)Fruit rot and leaf spot induced by Can J Bot 43 1469-457
[7]  
Stan G.(1983) in Cuba Mapps Newsletter 7 12-174
[8]  
Seaman WL(1966)Black spot of tomato leaves caused by Phytopathology 564 455-378
[9]  
Shoemaker RA(1990) (Berk & Curt.) Wei Phytoparasitica 18 171-59
[10]  
Peterson EA.(1973)Pathogenicity of Plant Dis Reptr 57 375-200
123456