中国工程科学2012，Vol.14Issue(3)：59-64,6.
干旱和复水对冬小麦光合产物分配格局的影响
Influence of drought and rewatering on the pattern of photosynthate partitioning of winter wheat
摘要
Abstract
In 2005-2006, two experiments were carried out to study the effect of drought stress on photosynthate partitioning patterns of winter wheat, as well as ecophysiological responses of winter wheat to drought and rewatering, at the Fengqiu Agro-ecological Experimental Station, Chinese Academy of Sciences. Jimai20 and Zhoumail8, two winter wheat cultivars differing in sensitivity to drought stress, were grown in the field under a retractable awning. In experiment, plants were subjected to severe drought stress at the reviving stage, and then re-watered respectively at the jointing stage (Wrl) , the booting stage ( Wr2) and the flowering stage (Wr3). Rewatering had compensatory effects on losses in winter wheat biomass induced by drought stress. Rewatering at the jointing stage had the greatest stimulating effect on biomass. Compensatory growth however did not lead to a full recovery of leaf area lost during the drought period. Rewatering at first suppressed root growth, and then stimulated it. Drought stress led to reduced photosynthate allocation in leaves and spikes, and increased photosynthate allocation in the stem, leaf sheaths and roots. Rewatering at the jointing stage, the booting stage and the flowering stage boosted photosynthate accumulation in leaves, the stem and grains respectively. Rewatering at all stages allowed full recovery of drought induced yield loss, by increasing number of spikelets at the jointing stage or 1 000 kernel weight at the booting and flowering stages.关键词
光合产物/分配指数/可溶性糖/冬小麦/干旱和复水Key words
potosynthate/ partitioning coefficients/ water-solution carbohydrates/ winter wheat/ drought stress and rewatering分类
农业科技引用本文复制引用
谷艳芳,丁圣彦,高志英,邢倩..干旱和复水对冬小麦光合产物分配格局的影响[J].中国工程科学,2012,14(3):59-64,6.基金项目
国家自然科学基金项目(41071118 （）
31070394) （）
河南省基础前沿项目(092300410095) （092300410095）
