切花非洲菊瓶外生根技术与移栽基质的筛选

Study on the in vitro Rooting Technology of Gerbera jamesonii and the Screening of Suitable Matrix

以切花非洲菊"太阳风"的无根试管苗为试材,以蛭石、珍珠岩∶草炭=2∶1、珍珠岩∶草炭=1∶1为基质,进行了不同激素种类和浓度的瓶外速蘸微扦插试验,25d后调查移栽试管苗的叶片数、生根条数、根长3个指标。结果表明:各生长激素处理均促进了根的发生,各处理间的平均根条数存在极显著性差异,根长存在不同程度的显著性差异而叶片数没有显著性差异。根据试管苗根系的状况,筛选出蛭石为较适宜的基质,IBA 500mg/L+NAA 500mg/L为最适宜的激素处理,其次为IBA 500mg/L。

Taking cut flower Gerbera jamesonii ‘Solar wind’ rootless plantlets as test materials, vermiculite, perlite ： peat= 2 ： 1,perlite and peat=1：1 as rruatrix,after 25 days later,the number of the leaves,tbe roots and the length of the roots were investigated, the effect of the different hormone concentrations on the plantlets rooting were analyzed, and the suitable matrix were selected. The results showed that every hormone could promote rooting; there was a significant difference in average of root number,difference in the length of the roots,however there was no difference in the number of leaves. According to the growth status, the vermiculite was selected as the optimum matrix, the optimum hormone was IBA 500 mg/L＋NAA 500 m4g/L,the second IBA 500 mg/L.