Fungal Antagonists for the Biological Control of Ascochyta Blight of Chickpea

E. Rajakumar; R. Aggarwal; B. Singh

doi:10.1556/aphyt.40.2005.1-2.5

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Acta Phytopathologica et Entomologica Hungarica

Volume/Issue:: Volume 40: Issue 1-2

Fungal Antagonists for the Biological Control of Ascochyta Blight of Chickpea

Authors:

E. Rajakumar

E. Rajakumar Centre for Cellular and Molecular Biology (CCMB) Hyderabad, India

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R. Aggarwal

R. Aggarwal Division of Plant Pathology, Indian Agricultural Research Institute New Delhi-110 012, India

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, and

B. Singh

B. Singh Division of Plant Pathology, Indian Agricultural Research Institute New Delhi-110 012, India

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Pages:: 35–42

Online Publication Date:: 22 Jul 2005

Publication Date:: 01 Apr 2005

Article Category:: Journal Article

DOI:: https://doi.org/10.1556/aphyt.40.2005.1-2.5

Keywords:: biological control; biological control; Fungi; antagonists; Ascochyta blight.

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Ascochyta blight (Ascochyta rabiei) is one of the most devastating diseases of chickpea. The biocontrol potential of fungal antagonists, Chaetomium globosum, Trichoderma viride, Acremonium implicatum were explored under in vitro and in vivo. A. implicatum isolate-1 overgrew the host mycelium and caused lysis, while A. implicatum isolate-2 produced inhibition zone. C. globosum profusely overgrew the mycelium of A. rabiei and T. viride showed overgrowth and profuse sporulation. Bioassay with culture filtrates of all the antagonists resulted in significant inhibition of pycnidiospore germination and reduction in colony development of A. rabiei. Syringe filtered culture filtrate when amended in liquid broth medium also significantly reduced the mycelial growth. Bioassay of culture filtrates under glass house conditions, although brought reduction in disease development in both pre- and post-inoculation sprays, but C. globosum was the most effective antagonist causing 73.12% reduction in disease index when used as post inoculation spray. Under in vitro conditions C. globosum caused 48.59% reduction in colony diameter and 70.86% reduction in pycnidiospore germination.

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Acta Phytopathologica et Entomologica Hungarica

Print ISSN:: 0238-1249

Online ISSN:: 1588-2691

Editor-in-Chief

Jenő KONTSCHÁN Centre for Agricultural Research, Hungary

Technical Editor

Ágnes TURÓCI Centre for Agricultural Research, Hungary

Section Editor

K SALÁNKI Centre for Agricultural Research, Hungary

Editorial Board

Z BOZSÓ Centre for Agricultural Research, Hungary

PE CHETVERIKOV Saint-Petersburg State University, Russia

JX CUI Henan Institute of Science and Technology, China

J FODOR Centre for Agricultural Research, Hungary

Z IMREI Centre for Agricultural Research, Hungary

BM KAYDAN Çukurova University, Turkey

L KISS University of Southern Queensland, Australia

V MARKÓ Hungarian University of Agriculture and Life Sciences, Hungary

MW NEGM Ibaraki University, Japan

L PALKOVICS Széchenyi István University, Hungary

M POGÁNY Centre for Agricultural Research, Hungary

D RÉDEI National Chung Hsing University, Taiwan

A TOLSTIKOV University of Tyumen, Russia

J VUTS Rothamsted Research, UK

GQ WANG Guangxi University, China

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Acta Phytopathologica et Entomologica Hungarica
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