Widstrom , N.W. and Wiseman, B.R. and McMillian , W.W. (1984) Patterns of resistance in sorghum to the sorghum midge. Crop Science, 24 (4). pp. 791-793.
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Abstract
The sources of resistance to midge, Contarinia sorghicola (Coquillett), in sorghum Sorghum bicolor (L.) Moench have a need to be characterized so that different types may be consolidated and/or integrated into an effective selection program. Two separate sets of sorghum parents, F2, F3, and selfed backcross generations, (F12PF1)S and (F1P2)S, were grown on a Tifton sandy (fine-loamy, siliceous, thermic Plinthic Paleudult) in five-replicate field experiments in 1971 and evaluated for resistance to sorghum midge. No simple inheritance pattern was evident, but the resistance of sorghum line SGIRL-MR-1 was determined to be inherited as primarily recessive. F2 progenies from nine crosses and their reciprocals were grown in replicated tests in two or more years during 1979-1981. Results revealed significant differences in resistance to the sorghum midge between progeny of reciprocal crosses. The resistance of the lines PI383856 and SGIRL-MR-1 seemed to be inherited differently. The resistance in PI383856 tended to diminish in crossbred progenies when the line was used as a female and resistance in all SGIRL-MR-1 crosses tended to be recessive. Therefore, PI383856 or SGIRL-MR-1 should have utility in breeding for resistance by alternate crossing or backcrossing and selfing during selection. Resistance in PI383856 and SGIRL-MR-1 should be combined into a common source that might be more stable and have a higher level of resistance to sorghum midge damage than either line alone
| Item Type: | Article |
|---|---|
| Author Affiliation: | Southern Grain Insects Research Laboratory, USDA, ARS, Tifton, GA 31793, USA |
| Subjects: | Crop Improvement > Genetics/Genomics Crop Improvement > Plant Breeding |
| Divisions: | Sorghum Soyabean |
| Depositing User: | Ms K Syamalamba |
| Date Deposited: | 11 May 2012 09:02 |
| Last Modified: | 11 May 2012 09:02 |
| Official URL: | http://dx.doi.org/10.2135/cropsci1984.0011183X0024... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/5251 |
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