水杨酸浸种对抗虫棉种子萌发的影响

Effects of Seed-soaking with Salicylic Acid on Seed Germination of Insect-resistant Cotton

以抗虫棉品种为材料，研究了不同浓度水杨酸（SA）浸种不同时间对棉花种子萌发的影响。结果表明，低浓度（0～0．2mmol／L）SA能够显著提高棉花种子发芽率和发芽势，大于0．2mmol／LSA处理对种子的发芽促进作用呈下降趋势，高浓度（〉1．0mmol／L）SA处理对种子的发芽呈抑制作用；在同一SA浓度下，浸种时间为24h较48h发芽率高。研究认为水杨酸浸种对棉花种子的萌发有一定的影响，0．2mmoL／LSA浸种24h对提高棉花种子发芽率最好。

Tile effects of seed -soaking with different concentrations of salicylic acid （SA） on the seed germination of insect -resistant cotton were studied. The results showed that low concentration of SA （0 -0.2 mmol/L） could significantly increase the germination rate and germination potential of cotton seeds, and high concentration of SA （ 〉 1.0 mmol/L） significantly suppressed the germination of cotton seeds. Under the same concentration of SA, the seed germination rate in the treatment whose seed - soaking time was 24 h was higher than that in the treatment whose seed - soaking time was 48 h. This experiment indicated that soaking the seeds of insect - resistant cotton with 0.2 mmol/L SA for 24 h was the best for the seed germination.