Impact of Water logging on the Physiological Parameters and Main Yield Traits of Summer Maize
XU Hai-tao
WANG You-hua
XU Bo
WANG Cheng-ye
Abstract：In order to identify the response patterns of summer maize to waterlogging, the present study investigated the impact of waterlogging on the physiological parameters and main yield traits of summer maize under artificially simulated field environment. The results showed that maize growth and development was inhibited by waterlogging. Specifically, waterlogging lasting for 5 and 7 days decreased the plant height of maize by 11.11％ and 15.71％, respectively, as compared with the control without waterlogging. The number of green leaves and leaf area index (LAI) both decreased markedly with increasing waterlogging duration; and LAI decreased by 9.60％, 26.32％, 30.65％ and 39.32％ with 1, 3, 5, and 7 days of waterlogging, respectively. Moreover, relative leaf chlorophyll content and net photosynthetic rate also showed a decreasing trend with increasing waterlogging duration. The increase in waterlogging duration led to reductions in the ear length, ear diameter, ear grain weight, 100-grain weight, and ear-bearing percentage of maize; but rises in dead plant rate and bare tip length. The maize yields of treatments with 1, 3, 5, and 7 days of waterlogging declined by 3.69％, 75.67％, 92.34％ and 95.79％, respectively, as compared with the control, indicating that maize yield dropped by more than 70％ and90％ with 3 and 5 days of waterlogging, respectively.
Keywords：WaterloggingLeaf area indexRelative chlorophyll contentNet photosynthetic rateDead plant rateEar-bearing percentage
Publication Date：2018-11-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 7-11,29 )