3种报春苣苔属植物的叶插繁殖研究

Study on Leaf Cutting Propagation of Three Primulina Species

为研究不同因素对报春苣苔属植物扦插繁殖的影响,以物种类型、IBA浓度、基质、叶片部位为试验因素,采用正交试验设计分析4因素对生根率、子株数的影响。结果表明:三苞报春苣苔叶片中部经200 mg/L的IBA溶液处理后,在泥炭、珍珠岩、蛭石按体积比2∶1∶1的混合基质中扦插,可获得较多子株数,扦插效果最好。4个因素对扦插测定指标的影响为:物种种类对扦插的影响最大,其次为叶片部位,最后是IBA浓度以及基质,且在物种种类中,三苞报春苣苔的叶插较褐纹报春苣苔、网纹皮草的容易,叶片中部较叶片上部、下部容易生成子株数。三苞报春苣苔叶片中部经300 mg/L的IBA溶液处理后扦插在泥炭、珍珠岩、蛭石体积比为3∶1∶1的基质上,可获得较高的生根率。

In order to study the influence of different factors on the cuttage propagation of primula,the species,IBA concen?tration,substrate and leaf position were used as experimental factors.The orthogonal design was used to analyze the influence of four factors on rooting rate and number of seed plants.The results showed that the best cutting effect was obtained in the mixture of peat,perlite and vermiculite with volume ratio of 2∶1∶1 in the middle of the leaf by IBA solution of 200 mg/L.The influence of four factors on the cutting test index was that species have the greatest influence on cutting,followed by leaf position,and finally IBA concentration and substrate.In species,the leaf cutting of Primulina tribracteata was easier than that of Primulina glandaceis?triata and Primulina dryas‘Hisako’,and the number of seed plants in the middle of leaf was easier than that in the upper and lower part of leaf.The rooting rate of three bracts of Primulina tribracteata was higher when it was cutted in peat,perlite and vermiculite with the volume ratio of 3∶1∶1 in the middle of the leaf by IBA solution of 300 mg/L.