Bebawi, F.F (1984) Effects of gamma irradiation on sorghum bicolor- striga hermonthica relations. Environmental and Experimental Botany, 24 (2). pp. 123-129.
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Abstract
Seeds of grain sorghum (Sorgham bicolor (L.) Moench) varieties were irradiated with gamma rays from a 60Co source. The sorghum variety ‘Tetron’ gave maximum resistance to witchweed (Striga hermontica (Del.) Bent). In both laboratory and glasshouse experiments, sorghum seedlings obtained from seeds irradiated at 5, 10, 15, 20 and 30 krad reduced relative to control witchweed seed germination and attachment by 48, 64, 76, 86 and 91%, respectively, and by 53, 39, 46, 89%, respectively. In addition, the root yields of 6-week-old sorghum plants were reduced by 18, 33, 38, 51 and 75%, respectively, below the control while shoot yields were increased by 151, 72, 46, 30 and 6% respectively, above the control. In the field experiment, the irradiation treatments of 5, 10, 15 and 20 krad reduced both witchweed shoot yields and sorghum grain yields by 57, 78, 54 and 48%, respectively, and 15, 47, 52 and 60%, respectively, below the control. The significant reduction in sorghum root yield may account for the low sorghum grain yields and the low witchweed infestations associated with the low stimulant production of the sorghum roots.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Faculty of Agricultural university of Khartoum, Shambat, Sudan |
| Subjects: | Plant Production Crop Improvement |
| Divisions: | Sorghum |
| Depositing User: | Library ICRISAT-InfoSAT |
| Date Deposited: | 20 Mar 2012 14:01 |
| Last Modified: | 20 Mar 2012 14:01 |
| Official URL: | http://dx.doi.org/10.1016/0098-8472(84)90013-3 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/4007 |
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