Effect of Exogenous 5-ALA on Growth of Wheat Seedling Under Waterlogging Stress
[Objective]To investigate the effects of 5-aminolevulinic acid (5-ALA) soaking on the growth of wheat seedling under waterlogging stress.[Method]Hongdi 95 was used as experimental material and 5-ALA with different concentration gradients was used to soak wheat seeds. The soaking pond method was used to simulate waterlogging stress,and the effects of exogenous 5-ALA on the growth morphology of wheat seed-lings under waterlogging stress were evaluated by measuring the length and fresh weight of seedlings and roots. The contents of chlorophyll (Chl),soluble sugar (SS) and malondialdehyde (MDA) on wheat seedlings under waterlogging stress were measured.[Result]With the in-creasing of exogenous 5-ALA concentration,the growth vigor of wheat seedling firstly increased and then decreased.Seed soaking with 5-ALA at suitable concentration accelerated seedling growth,increased chlorophyll and soluble sugar,decreased MDA in wheat tissues and improved waterlogging resistance of wheat.But 5-ALA in high concentration inhibited wheat growth.[Conclusion]The growth of wheat seedling was in-hibited by the concentrations of 50,80 and 100 mg/L 5-ALA.
万方数据
维普
