Investigation, analysis and identification of disease of Gastrodia elata f. glauca.
10.19540/j.cnki.cjcmm.20191204.108
- Author:
Jin-Qiang ZHANG
1
;
Xin TANG
1
;
Cheng-Hong XIAO
1
;
Jiao XU
1
;
Qing-Song YUAN
1
;
Xiao WANG
2
;
Da-Hui LIU
3
;
Guang-Wen ZHANG
4
;
Fu-Ming LIU
5
;
Wei-Ke JIANG
1
;
Tao ZHOU
1
Author Information
1. Guizhou University of Traditional Chinese Medicine Guiyang 550025, China.
2. Shandong Analysis and Test Center Jinan 250014, China.
3. Hubei University of Chinese Medicine Wuhan 430065, China.
4. Guizhou Wumeng Teng Fungus Industry Limited Company Dafang 551600, China.
5. Jiulong Gastrodia elata development Limited Company Dafang 551600, China.
- Publication Type:Journal Article
- Keywords:
Gastrodia elata;
pathogenic fungi;
rot disease;
separation and identification
- MeSH:
China;
Fungi/pathogenicity*;
Gastrodia/microbiology*;
Plant Diseases/microbiology*
- From:
China Journal of Chinese Materia Medica
2020;45(3):478-484
- CountryChina
- Language:Chinese
-
Abstract:
Fungal disease is an important factor restricting the healthy development of Gastrodia elata industry. The control of fungal disease in G. elata is an important issue in production. This paper makes a detailed investigation on the current situation of G. elata disease in China through statistics on the failure rate, rotten pit rate and occurrence rate of G. elata disease in the main producing areas of China. It was found that G. elata disease was mainly infected from the top bud and junction, causing the occurrence rate of disease was 6%-17%, and the yield decreased by 10%-30%. The 23 dominant fungi were isolated from 18 typical G. elata disease samples. Through identification of colony morphology, mycelium morphology, spore morphology and genetic characteristics, they were finally identified as 13 species, belonging to 7 families and 7 genera. Trichoderma harzianum, Ilyonectria sp. and Ilyonectria destructans are the most frequently separated. Their isolation frequency were 22.22%,16.67%,16.67% respectively. Ilyonectria sp. and I. destructans were the first time isolated from G. elata disease samples. They may be the main pathogens causing soil-borne diseases of G. elata. T. harzianum has certain potential as Gastrodia biocontrol bacteria. This study can provide a theoretical basis for the research and development of control technology of Gastrodia fungi disease.
