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Morphological characterization, cross infectivity andchemo-sensitivity of Sclerotinia sclerotiorum isolates towards bio-agent and new molecules of fungicides

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Title Morphological characterization, cross infectivity andchemo-sensitivity of Sclerotinia sclerotiorum isolates towards bio-agent and new molecules of fungicides
Not Available
 
Creator AN Tripathi, KK Pandey, M Manjunath1, BR Meena, AB Rai and B Singh
 
Subject Cross infectivity, Confrontation test, Fungicide, Sclerotinia rot, Trichoderma
 
Description Not Available
Six different isolates of Sclerotinia sclerotiorum were
isolated from vegetable host crops namely brinjal,
cauliflower, French bean, and pea on potato dextrose agar.
These isolates were subjected for morphological
characterization, cross infectivity/pathogenicity test and
chemo-sensitivity towards bioagent and new molecules of
fungicides. On the basis of morphological characteristics
viz., colony colour and texture, the tested isolates were
categorized into two groups. Cross infectivity /
pathogenicity test were performed on French bean, dolichos
bean and pea using leaf detachment technique. Results on
cross infectivity revealed non-host specificity of tested
isolates of the pathogen. As regards to chemo- sensitivity
of these isolates with tebuconazole 250 EC, azoxystrobin 23
SC, fluopyram 17.7+ tebuconazole 17.7 SC, Fluopicolide 6.25
%+Propamocarb Hydrochloride 62.5% SC at concentration
of 250, 500, 1000 and 1500 ppm, the combination fungicide
fluopyram 17.7+ tebuconazole 17.7 SC was found most
effective at concentration of 250 ppm against tested isolates
of S. sclerotiorum. In case of in vitro evaluation of bioagent,
Trichoderma asperellum against these isolates, the highest
mycelial growth inhibition (50.46%) against pea isolate (PSS-
1) and the lowest inhibition (26.15%) in case of French bean
isolate (BSS-1) was observed. Cross infectivity and chemo
sensitivity of the pathogen clearly indicate the emergence
of this pathogen as broad spectrum covering wide host
range.
Not Available
 
Date 2020-08-19T05:49:06Z
2020-08-19T05:49:06Z
2017-07-01
 
Type Research Paper
 
Identifier AN Tripathi, KK Pandey, M Manjunath1, BR Meena, AB Rai and B Singh (2017) Morphological characterization, cross infectivity andchemo-sensitivity of Sclerotinia sclerotiorum isolates towards bio-agent and new molecules of fungicides. Vegetable Science 44(1): 103-106.
0970-6585
http://krishi.icar.gov.in/jspui/handle/123456789/39783
 
Language English
 
Relation 44(1);
 
Publisher THE INDIAN SOCIETY OF VEGETABLE SCIENCE