Evolvement of harvest index and water-use efficiency in diploid, tetraploid and hexaploid wheats during grain-filling stage under different water treatments
灌浆期水分亏缺条件下二、四、六倍体小麦收获指数和水分利用效率的演化

Aim Our objective was to understand differences in grain yield and wateruse efficiency among wheats of different ploidy. Methods We conducted experiments on six wheat varieties: diploid species (Triticum boeoticum, T. monococcum), tetraploid species (T. dicoccoides, T. dicoccon) and hexaploid species (T. aestivum Changwu 134 and Shaan 253). These were treated with different water conditions in the grain-filling stage, and we determined root bio-maSD, aboveground biomaSD, grain yield, water consumption for t...