Study of Some Phtsiological and Morphological Changes as a Measure of Salt Tolerance in Different Wheat Genotypes
Journal Title: International Journal of Farming and Allied Sciences - Year 2014, Vol 3, Issue 5
Abstract
The purpose of this study is to evaluate salt tolerance status of three wheat (Triticum aestivum L.) mutant, M/53, M/4, and M/8, and their origin Saberbeg. Seeds were planted in 12cm diameter pots filled with 7 Kg of coarse washed sand, under field condition with rainfall shelter. Saline water of 0.67( control), 6, 10, and 14 dsm-1 were prepared from diluting natural drainage water(65.5 dsm- 1 ) and used for irrigation. Leaf water potential (LΨw ) , leaf osmotic potential (LΨs) and leaf turgor potential (LΨp) were measured with thermocouple psychrometer. Evapotranspiration (ET) was calculated through growth season, grain yield/ pot, and its component were determined at harvesting. Mutant M/53 showed more 100 grain weight than its origin and other mutants . Leaf surface area (LSA), weight of roots, straw and yield component were reduced by increasing salinity, this responsible for the reducing in grain yield/pot. Mutant M/53 showed more negative leaf water and osmotic potential, and accumulated more K+ in their roots and leaves. Also showed high (ET) than its origin and other mutants. Evapotranspiration (ET) tended to decrease as salinity increased, and the same trend showed with (LSA) by decrease in their values as the osmotic potential decrease. The result of this study showed that mutant M/53 more tolerance to saline condition than its origin Saberbeg and other mutants (M/4, and M/8). In conclusion, the results suggested to possible adoption of such physiological and morphological changes(ET, LAS, leaf water and osmotic potentials and K+ accumulation in addition to yield response) as measure of salt tolerance in screening wheat genotypes.
Authors and Affiliations
Kamil M. AL- Jobori and Saif edin A. Salim
Keywords
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