【摘要】 以冬凤兰[Cymbidium dayanum Rchb.],竹叶兰[Arundian graminifolia(D.Don)Hochr.],碧玉兰[C.lowia-num(Rchb.f.)Rchb.],西藏虎头兰(C.tracyanumL.)组培苗为材料,进行60Coγ射线不同剂量处理,统计各处理植株死亡率、成活率及成活植株增殖率,并观察当代表型变异率和进行回归模型分析,初步结果表明:冬凤兰、竹叶兰、碧玉兰、西藏虎头兰组培苗的半致死剂量分别为:20.72 Gy,26.31 Gy,29.88 Gy,41.04 Gy,出现了植株矮化、变粗、叶变宽、叶尖分叉、叶上有淡绿斑,叶扭曲等较明显的表型变化。更多还原

【Abstract】 Treated vitro plantlets of Cymbidium dayanum Rchb.,Arundian graminifolia(D.Don) Hochr.,C.lowianum(Rchb.f.) Rchb.and C.tracyanum L.with 60Co γ ray of different dose,to stat plant death rate,survival rate,survival plants’proliferation rate,observed variation rate of character and took regression analysis,the results showed: the half-lethiferous dose of Cymbidium dayanum Rchb.,Arundian graminifolia(D.Don) Hochr.,C.lowianum(Rchb.f.) Rchb.and C.tracyanum L.vitro plantlets were respective 20.72Gy,26.31Gy,29.88Gy,41.04Gy,and there were remarkable character mutation on treated plants such as: stems became dwarfer and stronger, leaves became broader,some leaves could be seen the splits like saw tooth,have light spots on them and tortility.更多还原