Identification and Biological Characteristics of <i>Corynespora cassiicola</i> Causing <i>Corynespora</i> Leaf Spot on <i>Nelumbo nucifera</i>
Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2019, Vol. 40 ›› Issue (4): 734-740.DOI: 10.3969/j.issn.1000-2561.2019.04.017

• Crop Pests, Diseases and Their Control, Environmental Protection • Previous Articles     Next Articles

Identification and Biological Characteristics of Corynespora cassiicola Causing Corynespora Leaf Spot on Nelumbo nucifera

WANG Xiaoyu,LI Zengping(),ZHENG Zhilin,ZHANG Yu,WU Ruhui   

  1. Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan 570228, China
  • Received:2018-11-20 Revised:2019-01-19 Online:2019-04-15 Published:2019-05-21
  • Contact: Zengping LI


In order to identify the pathogen of leaf spot disease on Nelumbo nucifera Gaertn. and to study the biological characteristics, the samples of Corynespora leaf spot on lotus roots were collected from a lotus root field in Haikou, Hainan. The results showed that the pathogen was Corynespora cassiicola (Berk.& Curst.) Wei, the optimum temperature for mycelial growth was 25?30 ℃, and 28 ℃ was the most suitable temperature. The suitable pH was 6-9 and the best pH was 7. The mycelium of C. cassiicola grew well on the medium with anhydrous dextrose and D-xylose as the carbon sources. Peptone and beef extract was the best nitrogen source. Light had little effect on the pathogen.

Key words: Nelumbo nucifera, leaf spot disease, Corynespora cassiicola, biological characteristic