黑核桃腐烂病菌主要生物学特性及室内药剂筛选

doi:10.6048/j.issn.1001-4330.2019.04.014

新疆农业科学 ›› 2019, Vol. 56 ›› Issue (4): 714-723.DOI: 10.6048/j.issn.1001-4330.2019.04.014

• 植物保护·畜牧兽医·信息·农业经济 • 上一篇下一篇

黑核桃腐烂病菌主要生物学特性及室内药剂筛选

毕司进¹ , 宋峰惠², 张燕南³ , 史彦江² , 白剑宇²

1 新疆农业大学农学院,乌鲁木齐 830052;
2.新疆林科院经济林研究所,乌鲁木齐 830063;
3.绵阳师范学院生命科学院,四川绵阳 621000

收稿日期:2018-11-20 出版日期:2019-04-20 发布日期:2019-07-08
通信作者: 白剑宇(1977- ),男,河北人,副研究员,研究方向为林业有害生物防控, (E-mail) bjyhao2010@sina.com
作者简介:毕司进(1988- ),男,山东菏泽人,硕士研究生,新疆库尔勒人,研究方向为植物病害防控,(E-mail) 291807887@ qq.com
基金资助:
中央财政林业改革发展资金“新疆黑核桃良种推广示范”(新《2017》TG18号)

A Preliminary Report of Main Biological Characteristics of Black Walnut Rot and Screening of Indoor Fungicides

BI Si-jin¹, SONG Feng-hui², ZHANG Yan-nan³, SHI Yan-jiang², BAI Jian-yu²

1. College of Agronomy, Xinjiang Agricultural University,Urumqi 830052, China;
2. Research Institute of Economic Forestry,Xinjiang Academy of Forestry Sciences,Urumqi 830063,China;
3. College of Life Science and Biotechnology, Mianyang Normal University, Mianyang Sichuan 621000, China

Received:2018-11-20 Online:2019-04-20 Published:2019-07-08
Correspondence author: BAI Jian-yu, (1977- ), male, native place: Hebei. Professor, research field: Forestry Pest Prevention and Control, (E- mail) bjyhao2010@ sina.com

摘要/Abstract

摘要： 【目的】研究黑核桃腐烂病菌(Cytospora chrysosperma)的生物学特性,以病原菌为靶标进行室内杀菌剂毒力测定实验,为田间防治药剂的筛选提供备选药剂。【方法】采用菌丝生长速率法,分别测定病原菌在不同碳源、温度、pH值和光照条件下的生长速率,研究病原菌生物学特性。测定病原菌的室内药剂毒力。【结果】病原菌在供试的8种不同碳源培养基均可生长,在PDA、PSA、PCA和胡萝卜培养基培养基上长势好于其它4种不同碳源的培养基,其中病原菌在PDA上生长最好,其次为PSA、PCA和胡萝卜培养;病原菌在5～35℃均能生长,其中最适温度在(25±1)℃;病原菌在pH值3～10均能生长,其中在pH值5.0左右的条件下生长最为适宜;病原菌在24 h光照,12 h光暗交替和24 h黑暗三种光照条件下菌丝生长差异不显著,其中24 h光照条件下菌丝生长相对较快,而在其它2种光照条件下菌丝生长相对缓慢;12种供试药剂对黑核桃腐烂病菌的毒力大小存在明显的差异,其中,10%苯醚甲环唑毒力最大,EC₅₀值为0.001 mg/L,其次为16%苯甲中生,EC₅₀值为0.017 mg/L,而47%春雷王铜毒力最小,EC₅₀值为2 481.10 mg/L。【结论】在供试8种培养基中,最适合核桃腐烂病菌生长的培养基为PDA,最适生长温度在25℃左右,最适pH值为5,最适光照条件为24 h光照。供试的12种杀菌剂对菌丝生长均具有一定的抑制作用,其中苯醚甲环唑的抑菌作用最强,其次为苯甲中生和多锰锌,3种药剂可作为田间药剂筛选试验的备选。

关键词: 黑核桃; 腐烂病; 生物学特性; 毒力测定

Abstract: 【Objective】 To preliminarily clarify the biological characteristics of the black walnut rot (Cytospora chrysosperma) and carry out the toxicity test of the fungicides to the pathogen in the laboratory in the hope of providing alternative pesticides for the screening of field control agents.【Methods】The mycelial growth rate method was used to determine the growth rate of pathogen under different carbon sources, different temperatures, different pH values and different light conditions, thereby, to preliminarily clarify the biological characteristics of pathogen. The toxicity test of the fungicides to pathogen was carried out to provide alternative pesticides for field control. 【Results】Pathogens could grow on 8 kinds of different carbon source media, but they grew better on PDA, PSA, PCA and carrot medium than on other 4 different carbon source media. Pathogens grew best on PDA, followed by PSA, PCA and carrot culture. Pathogens could grow at 5-35℃, and the optimum temperature was (25±1)℃. Pathogens could grow in the range of pH 3-10, but the most suitable condition was pH value about 5. There was no significant difference in mycelial growth of pathogen under 24 h light, 12 h alternation of light and dark and 24 h darkness; Among them,, the mycelial growth of pathogen was relatively fast under 24 h light, but relatively slow under the other two light conditions. There were significant differences in toxicity of 12 selected agents to black walnut rot pathogen. Among them, 10% difenoconazole was the most virulent, whose EC₅₀ value was 0.001 mg/L, followed by 16% benzol, whose EC₅₀ value was 0.017 mg/L, while 47% kasugamycin-copper acetate was the least virulent, whose EC₅₀ value was 2,481.10 mg/L.【Conclusion】PDA was the most suitable medium for the growth of Cytospora chrysosperma among the selected 8 kinds of media, The optimum growth temperature was (25±1)℃, the optimum pH value was 5, and the optimum illumination condition was 24 hours. The selected 12 kinds of fungicides have certain inhibitory effects on mycelial growth, among them, the difenoconazole had the strongest inhibitory effect, followed by benzoyl mesophyll and polymanganese zinc. The 3 kinds of fungicides could be used as alternatives for field pesticides screening experiments

Key words: black walnut; canker; biological characteristics; toxicity test

中图分类号:

S436.62

毕司进, 宋峰惠, 张燕南 , 史彦江 , 白剑宇. 黑核桃腐烂病菌主要生物学特性及室内药剂筛选[J]. 新疆农业科学, 2019, 56(4): 714-723.

BI Si-jin , SONG Feng-hui , ZHANG Yan-nan , SHI Yan-jiang , BAI Jian-yu. A Preliminary Report of Main Biological Characteristics of Black Walnut Rot and Screening of Indoor Fungicides[J]. Xinjiang Agricultural Sciences, 2019, 56(4): 714-723.

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黑核桃腐烂病菌主要生物学特性及室内药剂筛选

A Preliminary Report of Main Biological Characteristics of Black Walnut Rot and Screening of Indoor Fungicides

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