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目的大田条件下,研究几种植物生长调节剂对盾叶薯蓣根茎中薯蓣皂苷元含量及根茎产量的影响。方法采用单因素施肥方法,结果采用SPSS 17.0统计软件包进行分析。结果发现施用萘乙酸、多效唑、烯效唑和2,4-D均可大大提高盾叶薯蓣根茎产量,但对于薯蓣皂苷元含量的影响较小。对薯蓣皂苷元含量的影响,2,4-D>膨大素>NAA>稀效唑>多效唑;对盾叶薯蓣根茎产量的影响,2,4-D>NAA>多效唑>稀效唑>膨大素。结论喷施一定浓度的2,4-D,对优质、高产盾叶薯蓣的栽培,具有重要的实践意义。
Objective To study the effects of several plant growth regulators on the content of diosgenin and rhizome yield in roots of Dioscorea zingiberensis under field conditions. Methods The single factor fertilization method was used. The results were analyzed using the SPSS 17.0 statistical software package. The results showed that the application of naphthalene acetic acid, paclobutrazol, uniconazole and 2,4-D can greatly increase the rhizome yield of Dioscorea zingiberensis, but it has little effect on the content of diosgenin. Effects on the contents of diosgenin, 2,4-D>swelling factor>NAA>cross-linked oxazole> paclobutrazol; effects on rhizome yield of Dioscorea zingiberensis, 2,4-D>NAA> paclobutrazol> oxazole> swelling agent . Conclusion Spraying a certain concentration of 2,4-D has important practical significance for the cultivation of high-quality and high-yield Dioscorea zingiberensis.