PRODUCTIVITY OF TOXIC METABOLITES BY ISOLATES OF RHIZOCTONIA SOLANI

S.VANITHA and G.THANGAMANI NARAYANASWAMY

doi:https://doi.org/10.29321/MAJ.10.A01681

Madras Agricultural Journal

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PRODUCTIVITY OF TOXIC METABOLITES BY ISOLATES OF RHIZOCTONIA SOLANI

Author: S.VANITHA and G.THANGAMANI NARAYANASWAMY,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 80, Issue: aug-aug,

DOI:https://doi.org/10.29321/MAJ.10.A01681

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Abstract

Five different isolates of R.Solani collected from Coimbatore, Madurai, Aliyar, Ambasamudrum and Gobi in Tamilnadu were assessed for the production of toxic metabolites. The culture filtrate of each isolate was considered as a toxic sample and was assayed for toxicity by bioassay of seed germination and radicle length of toxin treated rice seeds. All the isolates were found to reduce significantly the germination percentage of rice seeds and also the radicle length in germination seeds as compared to control indicating the presence of some toxic metabolites produced by the pathogen.

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