The Effect of Fungicides on Mycelial Growth and Conidial Germination of the Ginseng Root Rot Fungus, Cylindrocarpon destructans.
10.5941/MYCO.2017.45.3.220
- Author:
Jong Hwan SHIN
1
;
Teng FU
;
Kyeong Hun PARK
;
Kyoung Su KIM
Author Information
1. Division of Bioresource Sciences, Kangwon National University, Chuncheon 24341, Korea. kims@kangwon.ac.kr
- Publication Type:Brief Communication
- Keywords:
Chemical control;
Cylindrocarpon destructans;
Fungicides;
Ginseng
- MeSH:
Benomyl;
Fungi*;
Germination*;
Panax*;
Spores, Fungal;
Thiophanate
- From:Mycobiology
2017;45(3):220-225
- CountryRepublic of Korea
- Language:English
-
Abstract:
Ginseng root rot caused by Cylindrocarpon destructans is the most destructive disease of ginseng. Six different fungicides (thiophanate-methyl, benomyl, prochloraz, mancozeb, azoxystrobin, and iprodione) were selected to evaluate the inhibitory effect on the mycelial growth and conidial germination of C. destructans isolates. Benomyl and prochloraz were found to be the most effective fungicides in inhibiting mycelial growth of all tested isolates, showing 64.7% to 100% inhibition at a concentration of 10 µg/mL, whereas thiophanate-methyl was the least effective fungicide, showing less than 50% inhibition even at a higher concentration of 100 µg/mL. The tested fungicides exhibited less than 20% inhibition of conidium germination at concentrations of 0.01, 0.1, and 1 µg/mL. However, the inhibition effect of mancozeb on condium germination of C. destructans was significantly increased to 92% to 99% at a higher concentration of 100 µg/mL, while the others still showed no higher than 30% inhibition.
