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Title: Water and solute relations of salt stressed wheat and annual Suaeda maritima
Author: Eltayef, Khalifa Mohamed Khalifa
ISNI:       0000 0004 5365 5182
Awarding Body: Prifysgol Bangor University
Current Institution: Bangor University
Date of Award: 2014
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World agriculture is challenged by the increasing demand on diminishing resources of fresh water. Climate change and salinity are both issues, resulting in a major international research effort to breed more resistant crops. The aim of this thesis is to contribute to this effort by determining how wheat varieties respond to salt stress. This study describes an analysis of three wheat varieties (Gamina and Bohoth 105, from Libya and of reported salt tolerance, and Hereward) representing different palis of a salt tolerance spectrum. The effect of induced salt stress on leaf growth rate and final length was investigated by analysing water and solute relations at single cell resolution, using Single Cell Sampling and Analysis (SiCSA). The parameters for the wheat were compared with those of the halophyte (salt tolerant plant) Sea Blight (Suaeda maritima), in order to determine which wheat variety showed the most similar response. All four plants showed rapid cell osmotic adjustment (leaf and root) under salt stress, and leaf turgor pressure was at control levels by 48 hours after salt stress in all wheat varieties. However, varietal differences were evident in terms of cation activity, cortical cell osmotic adjustment, and root turgor regulation, with Bohoth 105 most resembling Suaeda in each. An unexpected observation for wheat leaf cells was a continued increase in turgor pressure after control values had been reached at 48 h post stress, which was not accompanied by an increase in osmotic pressure.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available