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STUDIES ON WHITEFLY (Bemisia tabaci Genn.) TRANSMITTING YELLOW MOSAIC VIRAL DISEASE OF MUNGBEAN [Vigna radiata (L.) Wilczek]

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Title STUDIES ON WHITEFLY (Bemisia tabaci Genn.) TRANSMITTING YELLOW MOSAIC VIRAL DISEASE OF MUNGBEAN [Vigna radiata (L.) Wilczek]
 
Creator PANDURANGA G.S
 
Contributor LOKA REDDY, K
 
Subject STUDIES, WHITEFLY, TRANSMITTING, YELLOW, MOSAIC, VIRAL, DISEASE ,MUNGBEAN
 
Description Field studies were conducted on “Whitefly (Bemisia tabaci Genn.) transmitting yellow
mosaic viral disease on mungbean [Vigna radiata (L.) Wilczek]” at College Farm, College of
Agriculture, Rajendranagar, Hyderabad during Rabi season, 2009-10.
The survey carried out in Warangal and Khammam Districts of Andhra Pradesh revealed that
mungbean yellow mosaic virus (MYMV) incidence was wide spread in Warangal district both
during vegetative (49.6%) and flowering (57.70%) stages as compared to Khammam district,
which recorded 42.20% and 50.62% disease incidence during vegetative and flowering stages,
respectively.
Among 22 mungbean entries screened for resistance against whitefly and mungbean yellow
mosaic virus (MYMV), resistant check (ML 267) and KM 200 mungbean entries recorded low
whitefly population of 1.33 and 1.55/5 plants, respectively, whereas the susceptible check
(WGG 2) recorded high mean population of whiteflies (9.11/5 plants) followed by MGG 350
(7.66/5 plants) and UPM 99(6.77/5 plants). The mungbean yellow mosaic virus (MYMV)
incidence recorded in the test entries ranged from 5.66 to 58.29%. The resistant check ML 267
(5.66%) followed by LGG 407 (11.87%) recorded less incidence while the susceptible check
WGG 2 showed high incidence (58.29%).
The mungbean entries were categorized based on their resistant reaction to mungbean yellow
mosaic virus (MYMV) on 0-5 scale. None of the entries were found to be highly resistant to
mungbean yellow mosaic virus (MYMV) and the resistant check ML 267 (5.66%) showed
resistant reaction while 12 entries viz., PDM 54, LGG 407, MGG 365, KM 200, MGG 332,
MGG 361, MGG 335, MGG 350, NM 1, PDM 11, UPM 99 and MGG 356 with 11.87 to 19.12%
disease incidence were found moderately resistant to mungbean yellow mosaic virus (MYMV).
Other 5 entries EC 19515, Pusa 9531, MGG 347, Pusa 105 and MGG 349 with 20.48 – 26.73%
MYMV disease were moderately susceptible and the susceptible check WGG 2 with 58.29%
disease incidence was categorized as highly susceptible genotype. The entry ML 267 which
showed resistant reaction to mungbean yellow mosaic virus (MYMV) recorded highest yield of
1103 kg/ha as against the lowest yield obtained from susceptible check WGG 2 (291 kg/ha).
Among the 12 moderately resistant lines, 4 lines viz, LGG 407, MGG 356, KM 200 and NM 1
which recorded the yield ranging from 831 to 972 kg/ha were found to be the promising lines.
Efficacy of certain newer insecticides was tested against whitefly and mungbean yellow
mosaic virus (MYMV) incidence and results revealed that foliar spray of thiomethoxam 25 WS
@ 0.005% followed by spirotetramat 150 OD @ 90 g a.i./ha and acetamprid 20% SP @ 0.002%
were found to be the most effective treatments and recorded low population of whiteflies
(2.66, 3.44 and 4.88/5 plants respectively) and low mungbean yellow mosaic virus (MYMV)
incidence ranging from 10.72% to 14.29%. Seed treatment with thiomethoxam 25 WG
@ 0.0035% and imidacloprid 70 WS @ 0.0035% though protected the crop from whiteflies up to
25 days after sowing but later resulted in more vector population (6.00 and 7.33/ 5 plants) and high
mungbean yellow mosaic virus (MYMV) incidence (19.81% and 24.33%) than the other
treatments.
 
Date 2016-08-06T14:09:50Z
2016-08-06T14:09:50Z
2010
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/71284
 
Language en
 
Relation D8579;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY RAJENDRANAGAR, HYDERABAD