PHYSIOLOGICAL RESPONSE OF SOME WHEAT CULTIVARS TO SALINITY STRESS
Fatma Aly Farghly;
Abstract
The results obtained in the present work clearly demonstrate that the three wheat cultivars (Sakha-1, Seds-1 and Giza-164) studied displayed distinct variation in salinity tolerance during vegetative growth stage.
(I) The results reveal that cv. Sakha-1 plant can tolerate salinity up to the level of 120mM NaCl, thereabove a slight reduction was exhibited. Wheat cv. Seds-1 plants, tolerated NaCI salinity up to the level of 60 mM NaCl, then a significant reduction in fresh and dry matter yields was recorded as the concentration of NaCl increased in the culture media and was completely inhibited in a concentration greater than 150 mM NaC!. On the other hand cv. Giza-164 plants tolerated NaC! salinity up to only 30 mM NaCl, then any progressive increase in salt supply was accompanied with a sharp decline in fresh and dry matter yield, and completely inhibited in a concentration over !50 mM NaCI. Accordingly, we ranked the three wheat cultivars as follow, in order from most to least tolerant cv. Sakha-1 > cv. Seds-1 > cv. Giza-164. Grains presoaking with glutamic acid increased, in most cases the fresh and dry matter of shoots and roots as well as their tissue water content of the salinized CVS. as compared with reference control plants.
(2) The biosynthesis of pigments was substantially affected by the different salt levels and the response of the test plants differ according to the cultivar used.
(I) The results reveal that cv. Sakha-1 plant can tolerate salinity up to the level of 120mM NaCl, thereabove a slight reduction was exhibited. Wheat cv. Seds-1 plants, tolerated NaCI salinity up to the level of 60 mM NaCl, then a significant reduction in fresh and dry matter yields was recorded as the concentration of NaCl increased in the culture media and was completely inhibited in a concentration greater than 150 mM NaC!. On the other hand cv. Giza-164 plants tolerated NaC! salinity up to only 30 mM NaCl, then any progressive increase in salt supply was accompanied with a sharp decline in fresh and dry matter yield, and completely inhibited in a concentration over !50 mM NaCI. Accordingly, we ranked the three wheat cultivars as follow, in order from most to least tolerant cv. Sakha-1 > cv. Seds-1 > cv. Giza-164. Grains presoaking with glutamic acid increased, in most cases the fresh and dry matter of shoots and roots as well as their tissue water content of the salinized CVS. as compared with reference control plants.
(2) The biosynthesis of pigments was substantially affected by the different salt levels and the response of the test plants differ according to the cultivar used.
Other data
| Title | PHYSIOLOGICAL RESPONSE OF SOME WHEAT CULTIVARS TO SALINITY STRESS | Other Titles | الاستجابة الفسيولوجية لبعض اصناف القمح تحت تأثير الاجهاد الملحى | Authors | Fatma Aly Farghly | Issue Date | 2001 |
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