4种报春苣苔属植物叶插繁殖技术研究

Leaf cutting propagation of four Primulina species

以河池报春苣苔（Primulinahochiensis）、线叶报春苣苔（Plinearifolia）、永福报春苣苔（P、yungfuensis）、尖萼报春苣苔（Ppungentisepala）为研究对象，采用多因素完全随机区组试验设计，探讨3种扦插方式和3种扦插基质对4种报春苣苔属植物扦插生根的影响。结果表明，4种报春苣苔属植物在珍珠岩：草炭=1：1（V／V）基质中的扦插效果最好，形成的子株数最多（19．67-29．67），不定根发生时间最短（28．33．41d），不定芽发生时间最快（63．67-79．67d）；河池报春苣苔以全叶插方式繁殖效果最好，线叶报春苣苔、永福报春苣苔、尖萼报春苣苔以半叶插方式繁殖效果最好。

To provide technical guidance for commercial production, the best leaf cutting propagation of four Primulina species （Primulina hochiensis, P. linearifolia, P. yungfuensis and P. pungentisepala） were investigated with a multi-factor randomized block design including three cutting modes and three substrate ratios. The results showed that the optimum medium ratio was perlite：peat=1：1 （V/V） with maximum seedlings （19.67-29.67） and quick development of adventitious roots （28.33-41 d） and adventitious buds （63.67-79.67 d）. Entire leaf cutting was more suitable for P. hochiensis, and half leaf cutting was more suitable for P. linearifolia, P.pungentisepala and P. yungfuensis.