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Studies on host range at molecular level and assessment of losses due to cotton leaf curl virus

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Title Studies on host range at molecular level and assessment of losses due to cotton leaf curl virus
 
Creator Maharshi, Anupam
 
Contributor Yadav, N.K.
 
Subject Genotypes, Biological phenomena, Enzymes, Planting, Cotton, Inorganic compounds, Antioxidants, Proteins, Fruits, Diseases
 
Description The present investigation entitled “Studies on host range at molecular level and assessment of losses
due to cotton leaf curl virus.” was carried out CCS HAU Cotton Research Station Sirsa and Cotton
Section and laboratory no 139, Department of MBB (Molecular biology & biotechnology), COB&H,
CCSHAU, Hisar during the Kharif 2014. Several weeds/vegetables/ tree plant samples around cotton
fields were collected and tested for presence of CLCuV using virus coat protein gene specific primers.
Abutilone indicum, Abutilone spp., Chenopodium album, Chenopodium mural, Cannabis sativa,
Convolvulas arvensis, Aeruca persica, Lantana camara, Parthenium spp., Withania somanifera,
Achyrenthes aspera, Tribulus terresteris, Clerodendron enarmi, Croton sprucifera, Aeruca sativa,
Vernea sineria, Euphorbia spp,, Coronopus didymus found to be infected with CLCuV. These are the
hosts on which CLCuV may survive during off season. CLCuD caused huge loss when it appeared in
early growth stages of the cotton i.e.60DAS. All the characters except percent GOT were affected due
to CLCuD infection and overall mean per cent reduction in number of bolls, boll weight, seed cotton
yield, seed index and lint index of all the dates of sowing was calculated as 13.03, 5.65, 18.14, 10.85
and 11.76 respectively. The overall mean per cent decrease of all the cultivars in number of bolls, boll
weight, seed cotton yield, seed index and lint index under study was recorded as 13.28, 5.60, 17.18,
10.73 and 11.45 respectively. Maximum loss was observed in late sown crop whereas minimum in
early sown crop. The per cent reduction in all the characters under study due to CLCuD was more in Bt
cultivars as compared to non Bt cultivars in all the stages of infection as Bt cultivars were more prone
to CLCuD incidence. A highly significant correlation was found between CLCuD incidence and
whitefly population. Out of sixty four genotypes, seven namely AUBURN, BLIGHT MASTER, B59-1678, PIL 8, PIL 8-5, PIL 104, PKV 0804 showed resistant reaction against CLCuD.
 
Date 2016-10-10T14:01:29Z
2016-10-10T14:01:29Z
2015
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/80356
 
Language en
 
Format application/pdf
 
Publisher CCSHAU