Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2021, Vol. 42 ›› Issue (10): 2952-2957.DOI: 10.3969/j.issn.1000-2561.2021.10.027

• Plant Protection & Bio-safety • Previous Articles     Next Articles

Identification and Biological Characteristics of Pathogen of Stem Rot of Broussonetia papyrifera

SHAN Jinxue, LI Zengping*(), ZHANG Yu, WANG Xiaoyu, HU Zhenzhen, ZHU Qingliang, CHEN Xianlei   

  1. College of Plant Protection, Hainan University / Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, Haikou, Hainan 570228, China
  • Received:2020-12-15 Revised:2021-02-03 Online:2021-10-25 Published:2021-11-25
  • Contact: LI Zengping

Abstract:

In December 2018, a stem rot disease was found on Broussonetia papyrifera in Danzhou City, Hainan Province. Basidiocarps related to the disease were collected. The pathogenic pathogen was isolated by the conventional tissue separation method, and the pathogenicity was determined. The phylogenetic tree was constructed by ITS-SSU-LSU multi-gene combination. It was identified as Ganoderma australe by morphology and molecular biology. The results of biological characteristics showed that the pathogen grew well in 25-32 ℃, the optimal temperature was 28 ℃, the optimal growth pH was 4-7, and the optimal growth pH was 6. It grew well on CA, PDA and PSA medium, the optimal medium was PDA medium; light had inhibitory effect on the growth of mycelia of the pathogen.

Key words: Broussonetia papyrifera, stem rot, Ganoderma australe (Fr.) Pat., biological characteristics

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