抑制三種果樹炭疽病菌之化學藥劑篩選
Other Title
Evaluation of fungicides for suppression of mycelial growth and conidial germination of Colletotrichum species isolated from mango, pomelo and banana fruit
Journal
植物病理學會刊
Journal Volume
15
Journal Issue
1
Pages
39-54
Date Issued
2006-03
Date
2006-03
Author(s)
Abstract
在實驗室，將化學藥劑添加於培養基中，再測定菌絲生長與分生孢子發芽的情形，以評估41種藥劑於不同濃度下對檬果、文旦及香蕉炭疽病菌的抑制效果。在菌絲生長方面，化學藥劑添加於2% V-8蔬菜汁瓊脂（2% V-8A)供試時，分別有3種、18不改及16種藥劑可以完全抑制檬果、文旦及香蕉炭翻肉菌侏之菌絲生長，其中以4-4式波爾多液、撲克拉乳劑及撲克拉錳可濕性物剎等3種藥劑之抑制效果最佳，當有效成份濃度在10 mg/L時即可完全抑制所有供試菌株之菌絲生長。在孢子發芽方面，將化學藥劑添加於1% CV-8蔬菜汁培養液(1% CV-8B)中供試時，分別有8種、9種及8種藥劑可以完全抑制檬果、文旦及香蕉炭疽病菌株之分生孢子發芽，其中以4-4式波爾多液、鋅錳乃浦可濕粉劑、免得爛水分散性檢劑、腈硫醌懸劑、快得寧水懸劑、腐絕快得寧可濕比粉劑、嘉賜快賜寧可濕性粉劑、鋅錳邁克尼可濕性粉劑等8種藥劑的藥效最佳，當有效濃度在10 mg/L時即可完全抑制所有供試三種菌株之孢子發芽與形成附著器，此外賽普護汰寧雖然不能完全抑制孢子發芽，但孢了發芽後不易形成附著器。
Anthracnose caused by Colletotrichum gloeosporioides on mango and pomelo, and C. musae on banana were major fruit diseases in Taiwan. In the study, 2% V-8 juice agar (2% V-8A) or 1% CV-8 juice broth (1% CV-8B) were amended with individual chemical to evaluate the suppression ability of a total of 41 chemicals to anthracnose pathogens isolated from three different hosts. For suppression of mycelial growth on 2% V-8A, 3, 18 and 16 kinds of chemicals, respectively, showed strongly inhibition effects to mango, pomelo and banana isolates at all tested concentrations (10,100 and 1000 mg/L, ai). Especially, 3 chemicals were most effective; none of tested isolates could grow on the medium amended with them. They were 4-4 Bordeaux mixtures, 25% prochloraz EC and 50% prochlorate manganese WP. For inhibition of conidial germination in 1% CV-8B, 8, 9 and 8 kinds of chemicals, respectively, could completely suppress the conidia of all tested isolates from mango, pomelo and banana at all tested concentrations. Among them, 8 chemicals, including 4-4 Bordeaux mixtures, 80% mancozeb WP, 80% Metiram WG, 42.2% Dithianon SC, 33% oxine-copper SC, 53%Thiabenazole + Oxine-copper WP, 43.5% kasugamycin + oxine-copper WP, and 62.5% Myclobutanil + Mancozeb WP could completely inhibit conidial germination as well as appressoria formation of all tested isolates at all tested concentrations. 62.5%% Cyprodinil + Fludioxonil WG was also very effective in inhibiting appressoria formation but not conidial germination at low concentration.
Subjects
炭疽病
炭疽病菌
樣果
文旦
香蕉
藥劑篩選
病害防治
anthracnose
Colletotrichum gloeosporioides
C. musae
mango
pomelo
banana
fungicides
chemical control
Publisher
中華民國植物病理學會
Type
journal article
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