林茂 李进华 唐遒冥 龚建英 蒋济刚 钟程 王华新



摘要:【目的】建立花叶良姜高频高效离体再生体系,为其种苗周年规模化生产提供新方法。【方法】以花叶良姜种子为材料,开展无菌萌发、愈伤组织诱导、愈伤组织分化及生根培养研究。【结果】花叶良姜种子依次经75%乙醇处理60 s、0.1%升汞处理10 min、5%次氯酸钠处理3 min,污染率仅5.00%,萌发率为75.83%;适宜花叶良姜愈伤组织诱导的培养基为MS+1.50 mg/L 6-BA+0.30 mg/L 2,4-D,适宜花叶良姜愈伤组织分化的培养基为MS+2.00 mg/L TDZ+
0.10 mg/L 2,4-D,分化系数达10.03;花叶良姜组培苗最佳生根培养基为1/2MS+1.00 mg/L ABT1号生根粉,生根率为98.00%。【结论】通过愈伤组织途径可建立花叶良姜的离体再生体系。
关键词: 花叶良姜;愈伤组织;无菌萌发;再生体系
中图分类号: Q949.71 文献标志码:A 文章编号:2095-1191(2016)11-1909-05
Abstract:【Objective】The present study was conducted to establish high-efficiency and high-frequency in vitro regeneration system of Alpinia zerumbet Variegata,in order to provide a new method for annual large-scale production of A. zerumbet seedling. 【Method】Using A. zerumbet seeds as materials,the experiment on aseptic budding,callus induction,callus differentiation and rooting was carried out. 【Result】Results showed that, after A. zerumbet seeds were disinfected with 75% ethanol for 60 s,then 0.1% mercury chloride for 10 min,finally 5% sodium hypochlorite for 3 min,contamination rate was only 5.00%,and germination rate was 75.83%. Suitable medium for inducing callus was MS+1.50 mg/L 6-BA+0.30 mg/L 2,4-D,suitable medium for callus differentiation was MS+2.00 mg/L TDZ+0.10 mg/L 2,4-D,differentiation coefficient was up to 10.03. Furthermore,optimum medium for rooting was 1/2MS+1.00 mg/L ABT1 rooting powder,rooting rate was 98.00%.【Conclusion】In vitro regeneration system of A. zerumbet can be established by the way of callus culture.
Key words: Alpinia zerumbet Variegata; callus; aseptic budding; regeneration system
0 引言
【研究意义】花叶良姜(Alpinia zerumbet Variegata)为姜科山姜属多年生草本植物,别名花叶艳山姜、彩叶姜、斑纹月桃,原产于东亚,在我国福建、广东及台湾等地也有栽培(秦丽凤等,2013)。花叶良姜叶色艳丽,花姿优美,花香清纯,观赏价值极高,是园林绿化工程不可或缺的素材,在园林造景中的应用频率越来越高,市场需求越来越大。然而傳统的块茎分株繁殖存在增殖系数低、繁殖速度慢等问题(郝静韦,1996;曾宋君,2001;赵秀芳,2004;林瓞文,2006),无法满足市场需求。组培快繁技术具有繁殖速度快、系数高、后代整齐一致的优点,是种苗高效繁殖的有效途径之一。因此,建立花叶良姜高频高效离体再生体系,对花叶良姜高效繁殖具有重要意义。【前人研究进展】目前,对花叶良姜组织培养的研究不多。……