Dedio, W. (1975) Water relations in wheat leaves as screening tests for drought resistance. Canadian Journal of Plant Science, 55 (2). pp. 369-378.
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Abstract
Relative saturation deficit, water content and water retention ability of wheat leaves were investigated as possible tests for drought resistance. The drought-tolerant cv. Pitic 62 showed the lowest relative saturation deficit at low soil moisture stress but not at high soil moisture stress. Water content was highest in Pitic 62 throughout the soil moisture range. Analysis of individual plants from a population of Pitic 62 and ACEF-125 and their hybrid showed a greater differential between the genotypes for water content than for relative saturation deficit. Selection was effective for water content but not for relative saturation deficit. Water retention ability after a 24-h drying period varied considerably among the 5 cultivars examined, with Pitic 62 and Pelissier being the best water retainers. Position of leaf and stage of maturity affected water retention ability.ADDITIONAL ABSTRACT:The drought tolerant Pitic 62 showed the lowest relative saturation deficit at low soil moisture stress but not at high soil moisture stress. Water content was highest in Pitic 62 throughout the soil moisture range. Analysis of individual plants from a population of Pitic 62 and ACEF-125 and their hybrid showed a greater differential between the genotypes for water content than for relative saturation deficit. Selection was effective for water content but not for relative saturation deficit. Water retention ability after a 24-h drying period varied considerably among the five cultivars examined, with Pitic 62 and Pelissier being the best water retainers. Position of leaf and stage of maturity affected water retention ability. Pitic 62 appeared to contribute the dominant genes for water retention ability and water content in a hybrid from a cross with ACEF-125.
| Item Type: | Article |
|---|---|
| Additional Information: | The author is grateful to Dr. E. A. Hurd for supply of ACEF- 125 and F3 seed of cross 7125 . |
| Uncontrolled Keywords: | Water relations, Wheat leaves, Screening tests, Drought resistance |
| Author Affiliation: | Research Station, Agriculture Canada, Swift Current, Canada |
| Subjects: | Crop Improvement |
| Divisions: | Other Crops |
| Depositing User: | Mr Arbind Seth |
| Date Deposited: | 29 Mar 2013 06:11 |
| Last Modified: | 29 Mar 2013 06:11 |
| Official URL: | http://pubs.aic.ca/doi/pdf/10.4141/cjps75-059 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/10062 |
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