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【目的】研究植物生长调节剂和化学试剂对桄榔种子萌发的影响,为桄榔资源化利用提供理论依据。【方法】观察果实、种子的形态,测定其大小及千粒重;用不同浓度的2,4-D、NAA、吲哚丁酸3种生长调节剂溶液及1%过氧化氢、1%氢氧化钠、0.3%硝酸钾和0.3%亚硝酸钠4种化学试剂溶液浸种,研究几种处理对种子萌发的影响,测定种子的发芽势和发芽率。【结果】2,4-D、NAA的最佳处理浓度是200 mg/L,发芽率分别为(65.56±1.93)%、(73.33±3.34)%;吲哚丁酸的最佳处理浓度是150 mg/L,发芽率为(73.33±3.34)%;化学试剂最佳处理为0.3%亚硝酸钠,发芽率可达(74.44±1.93)%;对照组发芽率为(30.00±3.33)%。【结论】不同试剂及同一试剂的不同浓度对种子发芽率的影响不同,其中以200 mg/L的NAA、150 mg/L的吲哚丁酸和0.3%亚硝酸钠处理效果较好。
【Objective】 The objective of this study was to investigate the effects of plant growth regulators and chemical reagents on the seed germination of candel nut and to provide a theoretical basis for the utilization of sugar cane. 【Method】 The morphological changes of fruits and seeds were observed, and their size and 1000-grain weight were measured. With different concentrations of 2,4-D, NAA and indole butyric acid as growth regulators and 1% hydrogen peroxide and 1% sodium hydroxide , 0.3% potassium nitrate and 0.3% sodium nitrite solution, the effects of several treatments on seed germination were studied, and the germination potential and germination rate of seeds were determined. 【Result】 The optimum concentration of 2,4-D and NAA was 200 mg / L, the germination rates were (65.56 ± 1.93)% and (73.33 ± 3.34)%, respectively. The optimum concentration of indole butyric acid was 150 The germination rate was (73.33 ± 3.34)%. The best chemical agent was 0.3% sodium nitrite and the germination rate was (74.44 ± 1.93)%. The germination rate of the control group was (30.00 ± 3.33)%. 【Conclusion】 The effects of different reagents and different concentrations of the same reagent on seed germination rate were different. Among them, 200 mg / L NAA, 150 mg / L indole butyric acid and 0.3% sodium nitrite were better.