石楠组培快繁技术研究

对石楠茎段组织培养中外植体的灭菌、褐变预防、增殖培养、根诱导等进行了试验研究。结果表明：外植体诱导再生新梢时,在培养基中添加500mg／L的PVP可有效地控制褐变;以6-BA1．0＋IBA0．2为增殖和扩繁培养基效果较好,增殖倍数达5．5;幼茎在1／2MS＋IAA（0．1～0．3）mg,L的培养基上生根效果普遍较好,生根率可达90％左右;幼苗经炼苗后盆栽,成活率95％。

Study on the Technique of Tissue Culture and Rapid Propagation of Photinia serrulata

The study was conducted on the experiment of explants sterilization of tissue culture of Photinia serru-lata stem segment,prevention of browning,proliferation culture and root induction and so on.The results indicated: when explants induced newshoot regeneration,turning brown were prevented effectively if adding 500 mg/L PVP in the cultured medium;the effect of cultured medium was better using cultured medium of 6-BA1.0+IBA0.2 proliferation and expanding propagation,proliferation times reached 5.5;the roota...