中国稻米Issue(1)：59-64,6.DOI:10.3969/j.issn.1006-8082.2016.01.013
孕穗期干旱及复水对水稻叶片生理生化和产量的影响
Effects of Drought and Re-watering on Rice Physiological and Biochemical Indexes of Leaves and Grain Yield at Booting Stage
摘要
Abstract
Although the study on drought damage mechanism of leaf cells and physiological and biochemical indexes of rice is rich and comprehensive, the study on the subsequent physiological changes after re-watering is still less. In this study, two rice varieties with different drought resistance ability, Zhonghan3(resistant) and Huanghuazhan(non-resistant), were used. Four treatments includ-ing flooding(CK), low drought stress(LD), moderate drought stress(MD) and high drought stress(HD) were implemented at boot-ing stage. The effects of drought stress on rice leaf physiological and biochemical traits(photosynthesis, GS, SPAD, antioxidant enzyme activity, and MDA) and grain yield were studied. The main results are as follows:1) In MD and HD treatments, Pn of rice leaves de-creased by 12.9%~43.9%which mainly related to Gs, while LD treatment have no significant difference in physiological and biochem-ical traits of leaf compared to CK. 2) After re-watering, all indices of leaf physiology and biochemistry for Zhonghan 3 could return to normal status under all treatments, whereas in Huanghuazhan, the target traits under LD and MD treatments could return to normal, and the HD influence could not recover after re-watering. 3) Drought stress made grain yield reduced by 14.3%~47.9%which mainly caused by the significant reduction of effective panicles and seed setting rate.关键词
水稻/孕穗期/干旱胁迫/生理生化性状/产量Key words
rice/booting stage/drought stress/physiological and biochemical traits/grain yield分类
农业科技引用本文复制引用
陈亮,汪本福,江元元,曹凑贵,李萍..孕穗期干旱及复水对水稻叶片生理生化和产量的影响[J].中国稻米,2016,(1):59-64,6.基金项目
高等学校博士学科点专项科研基金（20130146120033）；中央高校基本科研业务费专项资金资助项目 （）
