Miller, J.F. and Lucken, K.A. (1976) Hybrid Wheat seed Production Methods for North Dakota. Crop Science, 16 (2). pp. 217-221.
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Abstract
In trials at several sites in 1972-4, average yield of hybrid seed when a male fertility restorer and several male-sterile wheat lines were sown in male:female ratios of 1:1, 2:1 or 3:1 in strips 3.1-11 m wide were 1.37, 1.0 and 0.84 t/ha, respectively, or 0.69, 0.67 and 0.64 t/ha when adjusted for the area occupied by the restorer. Decreasing the width of strips to reduce pollen travel distances did not increase yields. Higher yields were obtained by sowing the earlier restorer line 44 growing degree days (growing degree day = average of maximum and minimum temperature - growth threshold temperature in this case 4.4 deg C) before sowing the later male sterile lines than with 0, 22 or 66 growing degree day differences. Hybrid seed yields were highly correlated with restorer yields indicating that hybrid seed production was much more likely to succeed at high than at low yielding sites.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Seed production, Cross-pollination, Cytoplasmic male sterility, Growing degree days, Trlticum aestivum L era. Thell. |
| Author Affiliation: | Dep. of Agron., North Dakota State Univ., USA. |
| Subjects: | Crop Improvement Crop Improvement > Plant Breeding |
| Divisions: | Other Crops |
| Depositing User: | Mr Arbind Seth |
| Date Deposited: | 01 Jan 2013 08:51 |
| Last Modified: | 01 Jan 2013 08:51 |
| Official URL: | http://dx.doi.org/10.2135/cropsci1976.0011183X0016... |
| URI: | http://eprints.icrisat.ac.in/id/eprint/9244 |
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