4个多用途萱草品种离体快繁体系的建立
2014-04-29储博彦等
储博彦等
摘要[目的]建立4個多用途萱草品种的离体快繁体系。[方法]以4个多用途萱草品种为试材,研究消毒时间对不同外植体的影响,以及不同激素配比的培养基对愈伤组织、增殖培养和生根培养的影响NAA培养基为4个品种的最佳生根培养基。[结论]该方法建立了4个多用途萱草品种的离体快繁体系,为萱草的种质资源栽培提供了理论依据。
关键词 多用途萱草;组织培养;培养基;外植体;快繁体系
中图分类号S188文献标识码A文章编号0517-6611(2014)14-04189-03
Studies on Tissue Culture and Rapid Propagation of the Four Multirole Hemerocallis fulva
CHU Boyan et al (Hebei Institute of Forestry Science, Shijiazhuang, Hebei 050061)
Abstract[Objective] To establish tissue culture and rapid propagation of the four multirole Hemerocallis fulva. [Method] With the four multirole H. fulva as test materials, effects of disinfection time on different explants were studied, effects of culture medium with different hormone ration on tissue callus, proliferation and rooting culture were studied. [Result] The results showed that 10 min was the best disinfection time, and the best explant was scape; The best medium for callus was MS+1.5 mg/L6BA+0.2 mg/L IBA; Shoot reproduction medium was MS+1.5 mg/L6BA+0.2 mg/L IBA; The best rooting medium was 1/2MS+0.3 mg/L IBA and 1/2MS+0.3 mg/L NAA. [Conclusion] The tissue culture and rapid propagation of four multirole Hemerocallis fulva were established, which will provide theoretical basis for germplasm resource cultivation of Hemerocallis fulva.
Key words Multirole Hemerocallis fulva; Tissue culture; Culture medium; Explants; Rapid propagation
萱草(Hemerocallis fulva)为百合科(Liliaceae)萱草属(Hemerocallis)多年生宿根草本植物,是在野生萱草种质的基础上,经过育种人员的精心选育而得到的栽培品种[1]。萱草属植物根系发达,适应性强,花色丰富,是优良的园林绿化植物。萱草一般采用分蘖方式进行增殖,1株萱草每年仅可繁殖4~5株,难以满足市场对珍稀品种的需求[2]。因此,亟需建立萱草的快繁体系。目前,对萱草组织培养的研究已有部分报道[3-9]。的再生体系,更多的萱草品种的快繁体系还有待进一步研究发现。
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