Changes of Surface Potential and Phospholipid Composition of Winter Wheat Callus Cells Grown at 5 and 25 °C |
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Authors: | M Filek K Pazurkiewicz-Kocot F Dubert I Marciska J Biesaga-Koscielniak |
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Institution: | ECOP Grandes Cultures, Catholic University of Louvam, 2 pi Croix du Sud, B-1348 Louvain-la-Neuve, Belgium |
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Abstract: | Water stress was imposed by cessation of watering (CW) on bread wheats and, in some experiments two spelt wheats, during 9–17 days, starting at the 4–5 leaves stage. Main shoot foliar stages (MSS) were delayed by CW and the effect remained thereafter. The presence of side tillers (intact or partly destroyed by heat or potassium iodide (KI) was not beneficial to main shoot foliar development after the end of CW. Emergence of tillers after the onset of CW was also delayed, but the effect was small if timing was expressed in MSS. Secondary tillers were the most sensitive to water shortage, their number, size and foliar stage were drastically reduced. The two cultivars of spelt wheats were not less sensitive to CW than the bread wheat tested. |
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Keywords: | Triticum aestivum L Thell Triticum spelta L water stress tillering foliar stage |
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