Krishnamurthy , K. and Raghunatha, G. and Rajashekara , B.G. and Ali, T.M.M. (1976) Differential resistance of sorghum genotypes to stored grain insect pests. Bulletin of Grain Technology, 14 (3). pp. 206-210.
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Abstract
The grain of 5 hybrid and 1 local genotypes of sorghum were compared for resistance to Sitophilus oryzae (L.), Tribolium castaneum (Hbst.) and Rhyzopertha dominica (F.). CSH-3 suffered greater seed loss than the other genotypes, mainly as a result of attack by R. dominica. CSH-4 was affected mainly by T. castaneum, and CSH-1 and CSH-2 by both R. dominica and T. castaneum. CSH-5 was fairly resistant to all 3 pests, and suffered the least loss of weight. Although the local genotype M 35-I was infested by a larger number of pests, the seed loss was minimal, indicating its superior keeping quality. Lower seed moisture content and fumigation with EDCT (ethylene dichloride with carbon tetrachloride) reduced the pest population and seed loss.ADDITIONAL ABSTRACT:Grain of 6 sorghum genotypes with m.c. of 9, 13 or 17% was stored after treating with ethylene dichloride/carbon tetrachloride (EDCT) or without treatment. The loss of grain wt., especially due to Rhyzopertha dominica incidence, was greater in hybrid CSH-3 than in other genotypes. The loss in hybrid CSH-4 was mainly due to Tribolium castaneum incidence, while grains of hybrid CSH-1 and CSH-2 were damaged by both spp. The resistance to both these spp. and Sitophilus oryzae was greatest in grains of hybrid CSH-5 and cv. M-35-1 and the wt. loss lowest. Pest incidence was lower on EDCT-treated grain than on untreated and on grain of 9% m.c. than of higher m.c.ADDITIONAL ABSTRACT:The grain of five hybrids and one local line were compared for resistance to Sitophilus oryzae, Tribolium castaneum and Rhyzopertha dominica. CSH3 suffered the greatest loss of grain, mainly as a result of attack by Rh. dominica. CSH4 was affected mainly by T. castaneum, and CSH1 and CSH2 by both Rh. dominica and T. castaneum. CSH5 was fairly resistant to all three pests and showed least loss of weight. Although the local line M35I was infested by the largest number of insects, grain loss was minimal, indicating its better storage quality
| Item Type: | Article |
|---|---|
| Author Affiliation: | University of Agricultural Sciences, Bangalore, India |
| Subjects: | Plant Protection Crop Improvement > Genetics/Genomics Crop Improvement > Plant Breeding |
| Divisions: | Sorghum |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 21 Sep 2012 04:43 |
| Last Modified: | 21 Sep 2012 04:44 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/8018 |
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