000			03273nam a22002297a 4500
003			OSt
005			20250305125550.0
008			250305b ||||| |||| 00| 0 eng d
040			_cCPGS
100			_aKalita, Binita _910268
245			_aManagement of mungbean yellow mosaic virus in mid-Hill vondition of Meghalaya / _cBinita Kalita.
260			_aUmiam : _bCPGSAS, CAU(Imphal), _cOctober 2024.
300			_a60p.
440			_a[Plant Pathology, School of Crop Protection] _99105
504			_aIncludes bibliographical references.
520			_aMungbean [Vigna radiata (L.) Wilczek], an important legume crop, belonging to the family Fabaceae, is a nutritionally significant crop, offering a range of health benefits. Beyond its nutritional profile, mungbean plays a crucial role in improving soil health. Despite India's position as the world's leading mungbean producer, the country's average yield remains surprisingly low, due to various pests and diseases. Among biotic stresses, Mungbean Yellow Mosaic Disease (MYMD) caused by Mungbean yellow mosaic virus (MYMV), genus Begomovirus and family Geminiviridae is a major problem in Mungbean production, causing yield losses ranging from 85 % to 100 %. It is transmitted either by grafting or vector whitefly (Bemisia tabaci) in a persistent way. In the current study, a survey was undertaken in Umsning and Bhoirymbong blocks of Ri-Bhoi district of Meghalaya during the month of August to October, 2023. The study revealed highest disease incidence (43.33 %) in greengram and lowest (22.50%) in french bean, recorded from Mawbri village and Mawkyrdep village of Bhoirymbong block, respectively. To check the source of resistance against MYMV, field evaluation of twenty mungbean germplasm was conducted in COA, Kyrdemkulai, Research farm, Meghalaya during March to June, 2024. Experiment result showed that most of the germplasm evaluated were categorized as susceptible to highly susceptible. Out of twenty germplasm screened, 3 germplasm (IC32006, IC39373, IC329079) were found moderately resistant, 4 were moderately susceptible (IC76575, IC252010, IC242862, IC76483), 5 were susceptible (IC330883, IC39438, IC394227, IC325799, IC76499) and 8 were highly susceptible (IC76486, IC39414, IC8917, IC325833, IC76451, IC16562, IC397183, IC39607). The occurrence of virus was confirmed by polymerase chain reaction technique using MYMIV-specific primer pair NM1 and NM2 which amplify coat protein (AV1 gene). The amplicon band size of ̴1000 bp indicated the presence of MYMIV strain in the collected sample. A field experiment on efficacy of antiviral compounds, botanicals and bio-control agents against MYMV was also conducted at COA, Kyrdemkulai, Research farm, Meghalaya. The study revealed that the foliar spray of neem leaf extract showed least disease incidence (15.27 %) with maximum number of pods per plant (14.53), seeds per pod (9.93), grain yield (g) per plant (9.67 g) and seed yield (774 kg/ha) as compared to other treatments employed in the experiment.
650			_aMungbean _xDisease management. _910269
650			_aYellow mosaic virus. _910270
700			_aL. Sanajaoba Singh _eMajor Advisor. _910110
856			_uhttps://krishikosh.egranth.ac.in/handle/1/5810220929 _yOnline.
942			_2ddc _cTH
999			_c5696 _d5696