密枝红叶李嫩枝扦插繁殖研究  

Research on Cutting Propagation of the Twigs of Prunus cerasifera ’MiZhi’

作　　者：李迎春 刘春和 张恒月 吴尚 段美红 LI Ying-chun;LIU Chun-he;ZHANG Heng-yue(Beijing Huangfa Nursery,Beijing 102600)

机构地区：[1]北京市黄垡苗圃

出　　处：《安徽农业科学》2020年第2期145-147,共3页Journal of Anhui Agricultural Sciences

基　　金：2018年中央财政林业科技推广示范补贴项目(京[2018]TG02号)

摘　　要：为探索密枝红叶李嫩枝扦插繁殖技术,以1年生密枝红叶李半木质化嫩枝为材料,对其进行不同基质、不同生长调节剂及浓度梯度的生根试验,调查愈伤组织形成率、生根率、平均生根数、平均生根长4项生长指标,以此确定适宜密枝红叶李生根的基质配方、生长调节剂种类及浓度。结果表明,密枝红叶李嫩枝扦插适宜在5月中下旬,选用带2~4片叶的1年生枝条中部为插穗,以珍珠岩∶草炭=1∶2为扦插基质,用400 mg/kg的ABT1生根剂浸泡处理30 min,能够获得70%以上的生根率,平均生根数可达6.25条,平均根长可达5.23 cm。In order to explore the cutting propagation technology of the twigs of Prunus cerasifera‘MiZhi’,a series of rooting experiments were carried out based on the annual semiwoody shoots,with the experimental processes of different substrates,hormones and concentrations,and four growth indexes were investigated,including callus formation rate,rooting rate,average rooting number and average rooting length.Through this study,the suitable matrix formula,growth regulator type and concentration for the growth of new roots were finally determined.The results showed that the Prunus cerasifera‘MiZhi’twig cutting was suitable in the mid to late May.The middle of annual branches with 2~4 leaves were selected as cuttings,and perlite∶peat=1∶2 was used as the cutting matrix.After being soaked with ABT1 rooting agent 400 mg/kg for 30 min,the rooting rate of over 70%could be obtained,the average rooting number could reach 6.25,and the average root length could reach 5.23 cm.

关 键 词：密枝红叶李 嫩枝 扦插 生根 

分 类 号：S773.730[农业科学—森林工程]