Effects of Exogenous NO on Seed Germination and Seedling Growth of Abrus herba under Aluminum Stress
This study used seeds of Abrus cantoniernsis Hance and Abrus mollis Hance as experimental materials and employed the paper roll germination method to investigate the effects of aluminum stress on the germination and seedling growth of the two species.Additionally,the study explored whether the addition of exogenous SNP at different concentrations could alleviate aluminum toxicity in both species.The results showed that aluminum stress significantly inhibited the germination and seedling growth of both Abrus herba species.The addition of exogenous NO resulted in a reduction of the inhibitory effects of aluminum stress on germination and seedling growth at low and medium con-centrations of SNP,as evidenced by increases in germination rate,germination potential,germination index,seedling height,primary root length,seedling fresh weight,and the number of primary lateral roots,particularly promoting seedling height.Among the treatments,100 μmol/L SNP was found to be the most effective in alleviating aluminum stress for Abrus mollis Hance,while 500 μmol/L SNP was most effective for Abrus cantoniernsis Hance.
万方数据
维普
