Comparative study on rhizosphere colonization by some mutant and wild isolates of Trichoderma species
153 / 67
Authors
-
AYON ROY and SITANSU PAN
Abstract
The ability to colonize groundnut rhizosphere by some g ray induced mutants and wild isolates of Trichoderma harizanum and Trichoderma virens was determined upto 70 DAS. All isolates multiplied in groundnut rhizosphere and the multiplication was several folds higher in sterilized soil over natural one. Variation in rhizosphere population in non-sterilized soil was detected only after 28 days whereas significant variation in population dynamics in sterilized soil was recorded at very early stage (14 DAS) among the mutants. A gradual decline in rhizosphere population was recorded upto 42 DAS and there after an inconsistent fluctuation in population was noticed upto 70 days for most of the isolates. Considering the overall performance, mutant isolates 50Th3VI, 150Th3I, 125Th4I, 75Tv1VI, 150Tv1II and 75Tv3I appeared greater rhizosphere competent over their wild counterparts.
Downloads
Issue
Section
License
For Authors
As soon as an article is accepted for publication, authors are requested to assign copyright of the article (or to grant exclusive publication and dissemination rights) to the publisher (Indian Phytopathlogical Society). This will ensure the widest possible protection and dissemination of information.
For Readers
While the advice and information in this journal is believed to be true and accurate at the date of its publication, the authors, the editors, nor the publisher can accept any legal responsibility for any errors or omissions that may have been made. The publisher makes no warranty, express or implied, with respect to the material contained herein.
All articles published in this journal are protected by copyright, which covers the exclusive rights to reproduce and distribute the article (e.g., as offprints), as well as all translation rights. No material published in this journal may be reproduced photographically or stored on microfilm, in electronic data bases, on video disks, etc., without first obtaining written permission from the publisher. The use of general descriptive names, trade names, trademarks, etc. in this publication, even if not specifically identified, implies that these names are protected by the relevant laws and regulations.