Plant-water relations in wheat as influenced by root pruning |
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Authors: | R. B. Sharma |
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Affiliation: | (1) Department of Soil Science, G.B Pant University of Agriculture and Technology, 263145 Pantnagar, India;(2) Department of Soil Science, Sokoine University of Agriculture, P.O. Box 3008, Morogoro, Tanzania |
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Abstract: | Summary A greenhouse study in which 24, 54 and 71 per cent roots of wheat (Triticum aestivum L.) were pruned on the 73rd day from the date of planting (anthesis stage) showed that during a 7-day period following root pruning, total transpiration and leaf water potential were significantly lower (P=0.05) and the stomatal resistance was significantly higher (P=0.05) where 54 and 71 per cent roots were pruned, as compared to no root pruning or 24 per cent root pruning. The leaf relative water content, however, showed no significant differences. Thus about one-fourth root sytem could be reduced without adversely affecting the plant-water status. |
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Keywords: | Plant water relations Relative water content Root pruning Stomatal resistance Transpiration Water potential Wheat |
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