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Molecular diversity, epidemiology, host plant resistance and management of mungbean yellow mosaic virus infecting mungbean and urdbean

KrishiKosh

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Title Molecular diversity, epidemiology, host plant resistance and management of mungbean yellow mosaic virus infecting mungbean and urdbean
 
Creator Srinivasaraghavan, A.
 
Contributor Kushwaha, K.P.S.
 
Subject molecular genetics, genetic diversity, epidemiology, host plants, disease resistance, mung bean yellow mosaic virus, viral diseases, Vigna mungo, Vigna radiate, mung beans
 
Description Thesis-PhD
The yellow mosaic disease occurs from moderate to severe form in all the Kumaon tarai belt. The disease incidence was severe in U.S Nagar district. In mungbean, incidence of yellow mosaic disease ranged from4.30 to 31.20 during 2012 and 4.20 to 31.60 during 2013. In urdbean, the incidence of yellow mosaic disease ranged from 5.60 to 32.40 during 2012 and 5.60 to 34.23 during 2013. In both mungbean and urdbean the weather parameter had a profound influence on yellow mosaic disease incidence, severity and whitefly population. Disease incidence had a highly significant positive correlation with maximum temperature (0.758 and 0.755), significant negative correlation with morning relative humidity (-0.603 and -0.611) and significant positive correlation was found between disease severity and maximum temperature (0.643 and 0.648).The whitefly population and disease incidence was having a positive correlation (0.49 and 0.54mungbean and urdbean respectively). In the Kharif season, early sowing of mungbean and urdbean crop in last week of July had less incidence of yellow mosaic and give more yield compared to late sowing. The present investigation concluded that the virus causing yellow mosaic in mungbean and urdbean Kumaun tarai region of uttarakhand is predominantly Mungbean Yellow Mosaic India Virus (MYMIV). In the weed samples tested for the presence of MYMIV, Gomphrena sessilisgave a positive reaction indicating the major role of weed in the epidemiology of yellow mosaic. Among 126 mungbean and 70 urdbean genotypes screened none of them was free from yellow mosaic during both the seasons. Only two genotypes of mungbean (KM-2293) and urdbean (IPU-10-23 and IPU-2-43) were showing resistant reaction with less than one per cent incidence. Among different insecticides tested, Imidacloprid 56 FS seed treatment along with 2 sprays of imidacloprid 17.8 SL was best in reducing the disease incidence and with highest yield in both crops. Next best treatment in reducing the disease was thiomethaxam 25 WG at par with triazophos 40EC in both crops.Among different botanicals tested two sprays of neem leaf extract was found on par with Azaradichta 0.06EC in both crops.
 
Date 2016-09-28T16:04:48Z
2016-09-28T16:04:48Z
2014-09
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/79340
 
Language en
 
Format application/pdf
 
Publisher G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)