On the off season survival of Ustilaginoidea virens, the pathogen causing false smut of rice in Kerala

Publication Date : 16/03/2016


Author(s) :

RASHMI C R , GOKULAPALAN C , GIRIJA V K , SURENDRAN M.


Volume/Issue :
Volume 2
,
Issue 3
(03 - 2016)



Abstract :

False smut disease of rice caused by Ustilaginoidea virens (Cke.) Tak. is an emerging disease worldwide affecting the yield and quality of rice. The pathogen survives as dormant structures such as sporeballs, chlamydospores, sclerotia etc. in soil, stubbles of the crop and on collateral hosts. The disease being a major constraint of rice production in Kerala, surveys were conducted to study the off season active survival of U. virens in the field. During the survey conducted at Palakkad, the pathogen was found to be surviving on the ratoon rice plants of variety Uma emerged from the stubbles of the previous crop at Kizhayur area of Palakkad. From Ambalappuzha area of Alappuzha district, the disease was observed on weedy rice, Oryza spontanea.


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