藤本植物千里光的无性扦插繁殖技术

千里光(Senecio scandens)是一种药用价值和观赏价值较高的园林藤本植物。采用4因素3水平正交试验设计，以生根率、平均根长和平均生根数为扦插生根质量的指标，并构建生根质量指数，评价总的生根质量，研究NAA浓度、扦插基质、插穗类型和处理时间对千里光无性扦插繁殖生根的影响。结果表明，NAA浓度对生根质量指数影响的效果最大，处理时间次之，插穗类型居第3位，扦插基质影响最小。当NAA浓度为600 mg·L-1，扦插基质为红黄壤，插穗类型为带顶芽茎段，处理时间为1 h时，千里光无性扦插繁殖的生根质量最好。

Asexual cutting propagation techniques of liana plant Senecio scandens

Senecio scandens is a kind of garden liana plant which has both high medical value and ornamental value. Using orthogonal experiment method by 3 levels with 4 factors,the influence of NAA concentration, cutting matrix, cuttings type and processing time on the rooting quality of S.scandens cutting propagation were studied. Cutting rooting quality included rooting rate, average root length and average root quantity. The results showed that NAA concentration had greatest impacts on the rate of rooting quality which followed by processing time, cuttings type and cutting matrix. The rooting quality of S. scandens was the best with NAA concentration 600 mg·L-1, red-yellow soil midium, stems with buds as cuttings, 1 hour processing time .