Screening of sorghum genotypes against rice weevil (Sitophilus oryzae Linn.) for resistance/susceptibility

Pradeep, . and Jagginavar, S.B. (2015) Screening of sorghum genotypes against rice weevil (Sitophilus oryzae Linn.) for resistance/susceptibility. Karnataka Journal Agricultural Science, 28 (4). pp. 614-615.

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Abstract

It is well established fact that lot of efforts should be put for the production of every single grain but this is of no use if the produced grains are not saved, which recalls the proverb a "grain saved is a grain equally produced". Rice weevil is economically important storage pest on sorghum and other cereals in tropical and sub-tropical regions of the world. Rice weevil infestation alone resulted in sorghum grain damage up to 83.5 per cent over a period of six months (Kudachi et al., 2014). The average loss of sorghum grains in storage due to biotic and abiotic factors accounts for 10 per cent annually of which insects partake about 2.5 to 5.0 per cent. Major loss of sorghum grains in storage is contributed by internal primary feeder, rice weevil (Sitophilus oryzae Linn.). In a period of 100 days a single female of one of the most prolific strains rice weevil produces 24 adults and more than 57 per cent of grains are attacked. The losses of grains due to weevils are estimated to an average of 25 to 40 per cent after 100 days of storage (Ladang et al., 2008).

Item Type: Article
Uncontrolled Keywords: Sorghum, Genotypes,resistance
Author Affiliation: Department of Agricultural Entomology, College of Agriculture, Vijayapur University of Agricultural Sciences, Dharwad-580005, Karnataka, India
Subjects: Crop Improvement
Divisions: Sorghum
Depositing User: Mr T L Gautham
Date Deposited: 09 Mar 2016 04:54
Last Modified: 09 Mar 2016 04:54
URI: http://eprints.icrisat.ac.in/id/eprint/14208

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