Vol. 10 (1) : January-February 2019 issue
Green Farming Vol. 10 (1) : 118-120 ; January-February, 2019
Evaluation of field bean germplasms against pulse beetle, Callosobruchus theobromae L. under storage conditions
N.L. NAVEENAa1*, SABBITHI PAVANb2 and C.S. JAGADEESH BABUc3
aDepartment of Entomology, University of Agricultural & Horticultural Sciences, Shivamogga - 577 204 (Karnataka),
bDepartment of Entomology, University of Agricultural Sciences Dharwad - 580 005 (Karnataka),
cAICRP on Pigeonpea, University of Agricultural Sciences, GKVK, Bangalore - 560 065 (Karnataka)
Designation : 1Research Associate *(nlnaveena@gmail.com), 2SA, 3Professor
Subject : Entomology
Paper No. : P-7502
Total Pages : 3
Received : 08 December 2018
Revised accepted : 15 December 2018
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Citation :
N.L. NAVEENA, SABBITHI PAVAN and C.S. JAGADEESH BABU. 2019. Evaluation of field bean germplasms against pulse beetle, Callosobruchus theobromae L. under storage conditions. Green Farming Vol. 10 (1) : 118-120 ; January-February, 2019
ABSTRACT
Among the fifty different fieldbean germplasms, GL 187 had recorded 19 per cent seed damage followed by GL 60 and GL 128 where these recorded <25 per cent seed damage and grouped under least susceptible germplasms. GL 139 had recorded highest per cent seed damage (97 %), followed by Mani avare (96 %) which were grouped as highly susceptible. The grain weight loss among the different germplasms was ranged from 0.85 (GL 63) to 2.72 (GL 5) per cent. None of the germplasms found tolerant to Callosobruchus theobromae. The seed characters namely seed colour, seed shape, seed diameter and seed coat thickness were positively correlated with grain weight loss. There is an urgent need to develop tolerant varieties against this insect pest.
Key words :
Callosobruchus theobromae, Fieldbean germplasm, Pulse beetle, Seed damage.
