植物生长调节物质HKL-4对玉竹种子萌发及出苗影响研究

目的]为玉竹种子育苗繁殖提供参考。方法]因不同浓度的植物生长调节物质HKL-4对玉竹种子进行浸种处理,研究HKL-4浓度及浸种时间对玉竹种子发芽率和出苗率的影响。结果]HKL-4浸种时间显著影响玉竹种子发芽启动天数,而对发芽率和发芽势的影响却不明显;HKL-4浓度显著影响玉竹种子发芽率、发芽势和出苗率。40倍HKL-4母液浸种6 h,玉竹种子的发芽率和出苗率最高,分别为78.9%和72.9%,较对照提高了42.9%和43.6%。结论]适当浓度的HKL-4处理玉竹种子,可显著提高其发芽率和出苗率,最佳处理浓度为40倍母液。

Study on the Effect of Plant Growth Regulator HKL-4 on the Germination and Emergence of Radix bupleuri seeds

Objective]To provide the reference for seedling cultivation of Radix bupleuri.Method]Soaking Radix bupleuri seeds with different densities of plant growth regulators HKL-4,effects of HKL-4 density and soaking time on the rate of germination and emergence of Radix bupleuri seeds were studied.Result]The germination starting days of Radix bupleuri seeds were significantly affected bgthe soaking time,but the soaking time got no obvious effects on the germination rate and germination energy;the germination rate,the germination energy and the emergence rate of Radix bupleuri seeds were significantly affected by different HKL-4 concontrations.The germination rate and the emergence rate soaked by 40 times mother liquor for 6 h were the highest,and were 78.9% and 72.9% respectively,42.9% and 43.6% higher than that of control.Conclusion]Treating Radix bupleuri seeds with proper density of HKL-4 could improve the rate of germination and emergence,and the best density was 40 times mother liquor.