Volume 14, Issue 53 (fall 2010)
jwss 2010, 14(53): 65-73 |
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Javanmardi S, Fotovat R, Saba J. Relationship between Osmotic Adjustment with Soluble Carbohydrates and Proline and Role of Osmotic Adjustment in Grain Yield of Wheat Lines under Drought Stress . jwss 2010; 14 (53) :65-73
URL: http://jstnar.iut.ac.ir/article-1-1333-en.html
URL: http://jstnar.iut.ac.ir/article-1-1333-en.html
, javanmardi.sara@gmail.com
Abstract: (31420 Views)
Osmotic adjustment is generally regarded as an important adaptation of wheat to drought. Because it helps to maintain turgor and cell volume, osmotic adjustment is often thought to promote growth, yield, or survival, of plants in dry soils. However, a physiological rationale for such views is lacking. This study was conducted to determine the effect of osmotic adjustment and some of its components on the wheat yield. Ten bread wheat cultivars were grown in pots under different watering levels using a split plot design. During grain filling stage, RWC, leaf sugar content, proline content and osmotic regulation were estimated by sampling flag leaf under normal and stress conditions. Main stem was used for measuring sugar content of different parts of stem. Although there were some differences in osmotic regulation in wheat lines, there were no relationships between yield and osmotic regulation. It was shown that these components probably have a little share in wheat osmotic regulation.
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