Impact of Alternating Drought and Waterlogging during Tillering Stage on Physiological Traits of Rice
ZHEN Bo
GUO Xiangping
LU Hongfei
ZHOU Xinguo
WANG Zhenchang
LI Xiaopu
Abstract：This paper investigated the impact of alternating waterlogging and drought during the tillering stage on physiological traits of rice using pot experiments.We considered both slight watedogging-drought alternation (TLD) and severe waterlogging-drought alternation (T-HD).Main physiological traits were measured before,during and after occurrence of these stresses.The results showed that the activity of nitrate reductase in the leaves under T-LD was higher than those under T-HD and CK (conventional flooding).In comparison with those under CK,the concentration of malondialdehyde and the activity of glutamine synthetase (GS) under T-LD and T-HD decreased significantly,while the concentration of chlorophyll increased.At ripening stage after re-watering,the activity of GS increased considerably and was higher than that under the CK,indicating that a moderate waterlogging-drought alternation during tillering stage can enhance physiological activity of the rice and delayed senescence without scarifying tolerance of the rice to flooding.
Keywords：alternative drought and waterloggingricetillering stagephysiological traitssubmergence tolerance
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 36-40 )