Justice, O.L. and Kulik, M.M. (1970) Some effects of gamma radiation on germination and storage life of seeds of eight crop species. Proceedings of the International Seed Testing Association, 35 (3). pp. 397-712.
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Abstract
Air-dry seeds of 8 species including Kentucky bluegrass, crimson clover, sorghum and maize were irradiated with 60Co γ-rays at 0-80 krad and subsequently stored at 20°C and ambient r.h. Crimson clover was also irradiated with up to 500 krad. Samples were tested for germination after 0.5, 4.5, 14.5 and 27 months. A 10-krad dose produced radiation damage in Kentucky bluegrass only. The radiation dose at which germination percentage was significantly reduced below the unirradiated controls was 20-40 krad for sorghum and Kentucky bluegrass, 40-80 krad for maize and 8 krad for crimson clover. Stored seeds of crimson clover which had been irradiated at 5-80 krad retained viability for up to 27 months, equalling the control; for the other species, average germination loss increased gradually with doses up to 20 krad; at 40 and 80 krad the loss rapidly increased. Average germination losses for all species except crimson clover during the 27-month storage period were 27.9%, 27.0%, 27.1%, 28.7% and 38.1% for doses of 0, 5, 10, 20 and 40 krad, respectively. Inoculation of seeds with spores of storage fungi had no effect on germination of 5 crop species after 27 months but reduced germination in maize.-F.A.S.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Market. Quality Res. Div., USDA, Beltsville, Maryland. |
| Subjects: | Crop Improvement |
| Divisions: | General |
| Depositing User: | Mr. SanatKumar Behera |
| Date Deposited: | 24 May 2012 14:22 |
| Last Modified: | 24 May 2012 14:22 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/5747 |
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