Use this URL to cite or link to this record in EThOS: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479781
Title: Water and salt relations of statice species with particular reference to the problem of halophytes
Author: Bozcuk, S.
Awarding Body: University of Sussex
Current Institution: University of Sussex
Date of Award: 1970
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Abstract:
1, The object of the research is to examine the effect of salinity on growth and transpiration of Statice sinuata, Statice latifolia and Pisum sativum L., and to make a comparison between the halophytes and the glycophyte,. 2. It is shown that as salinity increases, shoot growth of both halophytes and the glycophyte is considerably reduced in terms of decreased leaf elongation, leaf surface area and dry weight production. Pea plants show an increased root/ shoot ratio under saline conditions. These findings are discussed in terms of salt tolerance of the plants studied4 3. It is also demonstrated that Statice sinuata plants show very similar growth in isosmotic solutions containing concentrated Hoagland's solution and in Hoagland's solution supplemented with sodium chloride, but there is a greater depression of growing where the solution was supplemented with sodium sulphate. 4. In the case of pea plants the concentrated basic nutrient solutions are found to be less inhibitory for growth than the basic nutrient solutions salinized with sodium chloride at isosmotic levels. 5. Experiments show that, in general, there is a good correlation between the reduction of leaf surface area and transpiration. The reduced transpiration is found to be partly due to the reduced total leaf surface area and partly to closure of stomata under saline conditions. 6. Further investigations revealed that halophytic species are able to overcome the problem-of high concentrations of ions accumulating in their cells by eliminating large quantities of salts through special glands on their leaves. 7. The effect of various factors on the mechanism of salt excretion is studied in detail by using leaf discs of the halophytic species.
Supervisor: Not available Sponsor: Not available
Qualification Name: Doctoral Thesis - University of Sussex. Qualification Level: Doctoral
EThOS ID: uk.bl.ethos.479781  DOI: Not available
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