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中国生物防治学报 ›› 2022, Vol. 38 ›› Issue (4): 990-1000.DOI: 10.16409/j.cnki.2095-039x.2021.09.029

• 研究论文 • 上一篇    下一篇

嘴突凸脐蠕孢菌Y9511油剂剂型研究

董朝霞1, 刘灵锐2, 俞雯雯3, 陈勇2   

  1. 1. 华南农业大学林学与风景园林学院, 广州 510642;
    2. 华南农业大学农学院, 广州 510642;
    3. 广东烟草韶关市有限公司乳源县分公司, 韶关 512700
  • 收稿日期:2021-06-09 发布日期:2022-08-11
  • 通讯作者: 陈勇,教授,博士,博士生导师,E-mail:chenyong@scau.edu.cn
  • 作者简介:董朝霞,助理研究员,博士,E-mail:dongzhaoxia@scau.edu.cn
  • 基金资助:
    国家自然科学基金(31672039);国家重点研发计划(2017YFD0201300)

Formulation of Oil Solution of Exserohilum rostratum Y9511

DONG Zhaoxia1, LIU Lingrui2, YU Wenwen3, CHEN Yong2   

  1. 1. College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China;
    2. College of Agriculture, South China Agricultural University, Guangzhou 510642, China;
    3. Ruyuan County Branch of Guangdong Tobacco Shaoguan City Co., Ltd, Shaoguan 512700, China
  • Received:2021-06-09 Published:2022-08-11

摘要: 嘴突凸脐蠕孢菌Y9511是一株千金子生防潜力菌。本研究采用PDA平板培养法,以菌株Y9511的菌落直径、产孢量和孢子萌发率为指标,探究5种载体、9种表面活性剂、6种溶剂油和3种稳定剂对它的影响,且对孢子的分散性、悬浮性和稳定性做了研究,为菌株Y9511的制剂开发提供一定依据。结果表明:5种载体、9种表面活性剂、6种油类助剂和3种稳定剂对菌株Y9511的菌丝体生长均存在抑制作用;但珍珠岩、农乳700#、大豆油对产孢量的影响较明显,能使菌株Y9511产孢量达到5.3×106孢子/mL、10.8×106孢子/mL、4.3×106孢子/mL;将孢子粉分别与珍珠岩、大豆油按1:1和2:1配制时,萌发率最高,为47.00%和75.67%;根据分散力和稳定性测定结果,农乳1601#的分散力最好,分散力指数I为0.35;海藻酸钾的稳定性最好,斜率为0.0526;将农乳1601#和海藻酸钾配制成不同浓度,与孢子粉混合,当农乳1601#浓度为0.3%,海藻酸钾浓度为0.1%时,孢子萌发率高达54.33%和88.67%。基于上述比例,初步配方确定为Y9511孢子粉39.84%、珍珠岩39.84%、大豆油19.9%、农乳1601# 0.3%和海藻酸钾0.1%。本试验从生物相容性的角度出发,筛选出嘴突凸脐蠕孢菌Y9511油剂的最佳配方,为后续开发与应用奠定了基础。

关键词: 嘴突凸脐蠕孢菌, 油剂, 载体, 表面活性剂, 油类助剂, 稳定剂

Abstract: Y9511 strain of Exserohilum rostratum is a potential bio-control agent of Leptochloa chinensis (L.)Nees.Effects of 5 carriers,9 surfactants,6 oil adjuvants,and 3 stabilizers on Y9511 colony diameter,spore production,and spore germination rate were evaluated using the PDA culture method,and dispersity,suspensibility,and stability were also detected,which serves to aid the preparation development of E.rostratum Y9511.The results showed that the 5 carriers,9 surfactants,6 oil adjuvantes,and 3 stabilizers all inhibited the mycelial growth of Y9511,but spore production differed between the treatments.Perlite,Nongru 700#,soybean oil,resulted in spore production of 5.3×106,10.8×106,and 4.3×106 spores/mL,respectively.When the spore powder was mixed with perlite and soybean oil at 1:1 and 2:1,the germination rate was the highest,reaching 47.00% and 75.67%,respectively.According to dispersity and stability detection,Nongru 1601#showed the best dispersity,with a dispersity index of 0.35.Potassium alginate showed the best stability,with a slope of 0.0526.Nongru 1601#and potassium alginate were formulated in different concentrations and mixed with spore powder.When the concentrations of Nongru 1601#and potassium alginate were 0.3% and 0.1%,respectively,the spore germination rates were 54.33% and 88.67%,respectively.Based on the above results,the preliminary formula of Y9511 was recommended as spore powder 39.84%,perlite 39.84%,soybean oil 19.9%,Nongru 1601#0.3%,and potassium alginate 0.1%.From the perspective of biocompatibility,this study has screened out the best formula for E.rostratum Y9511,which serves as a foundation for subsequent development and application.

Key words: Exserohilum rostratum, oil solution, carrier, surfactant, oil adjuvants, stabilizer

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