THE EFFECTS OF SALINITY AND POTASSIUM ON GROWTH AND PROLINE ACCUMULATION IN TWO BARLEY CULTIVARS

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KAMALNEJAD J.; FARRAHI ASCHTIANI S.; GHANATI F.

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Journal Paper

Paper Information

Journal: Journal of Agricultural Sciences and Natural Resources Year:2006 | Volume:13 | Issue:1 Page(s): 88-98

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Information Journal Paper

Title

THE EFFECTS OF SALINITY AND POTASSIUM ON GROWTH AND PROLINE ACCUMULATION IN TWO BARLEY CULTIVARS

Author(s)

KAMALNEJAD J. | FARRAHI ASCHTIANI S. | GHANATI F. | Issue Writer Certificate

Keywords

SALINITYQ3

BARLEYQ3

POTASSIUMQ3

GROWTH RATEQ3

PROLINEQ3

Abstract

SALINITY is one of the most important problems of Iran. The effects of SALINITY and POTASSIUM on growth and PROLINE accumulation of two BARLEY cultivars (Reyhan and Afzal) were investigated in a randomized complete blocks design in sand and half-strength Hoagland solution culture. The results have shown that, photosynthesis, stomata conductance, transpiration rate, tissues POTASSIUM content and dry weight of shoots and roots decrease by increasing of salt concentration. This dry weight reduction was higher in Reyhan cultivar. Under sand culture medium, PROLINE content of shoot of both cultivars, treated with NaCl, were higher than those of control plants. However, application of POTASSIUM accompanied by SALINITY resulted in more roots and shoots tissues with higher shoot tissues POTASSIUM content. This may be due to more uptake of POTASSIUM instead of sodium. Since most of the higher plants have high selectivity in the uptake of K+ as compared to Na+. According to the above results, it seems that cultivar Afzal exhibits a higher salt tolerance than Reyhan cultivar.

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