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A pot and a field experiment were conducted to assess the effects of root/shoot ratio (R/S) on the water use efficiency (WUE) and grain yield of winter wheat. The R/S was regulated by pruning the roots during the stem elongation stage, resulting in reduced root systems of the plants. At the heading stage, the root dry weight of root-pruned plants was less than that of intact-root plants, but their...
This study was conducted to assess the effect of root system size and vertical distribution on competitive ability and water use efficiency (WUE) by root pruning at the stem elongation stage. The field experiments were carried out from 2004 to 2005 and 2005 to 2006 in the Loess Plateau regions, China. Root pruning succeeded in reducing root dry weight in the upper soil (0–20cm soil layer), resulting...
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