水杨酸浸种对豌豆种子萌发及幼苗生长的影响

Effects of Soaking with Salicylic Acid on Seeds Gernimation and Seedlings Growth of Pea(Pisum sativum)

研究了水杨酸（SA）浸种对豌豆种子萌发及幼苗生长的影响。结果表明：10～40mg／L的SA浸种，发芽势、发芽率显著提高；40mg／L的处理，增幅分别为对照的12％和10％；鲜重和干重分别达到对照的120％和132％；20mg／L的处理，萌动豌豆种子的呼吸速率和幼苗的根系活力均极显著高于对照，当处理浓度超过60mg／L时，电导率为对照的128％，相关生理指标下降，幼苗生长受到一定抑制。试验证明，40mg／L的水杨酸处理，能改善豌豆幼苗对N和K的吸收，但SA不利于幼苗对P的吸收。

Effects of salicylic acid（SA） on germination of seeds and growth of seedlings of pea were studied, The results showed that, treated with 10 -40 mg/L of SA, the germination energy and percentage were promoted by 12% and 10% ;Treated with 40 mg/L of SA,the seedlings were remarkably increased 1.20 to 1.32 times in fresh and dry weigh than the control, Treated with 20 mg/L of SA, the respiratory rate of germinnationnal seeds and the root activity of seddlings were remarkably increased than the control, Treated by above 60 mg/L of SA, the conductivity was increased to 128% of ck, and some relevant indexes were lower than ck,at the same time, the growth of seedlings were inhibited. The experiments proved that thongh treatment with 40 mg/L of SA conld improve absorption of N and K, it wasn＇ t appropriate to absorption of P from seedlings of pea.