“勿忘我”丛生芽诱导及植株再生
2014-10-21王淑敏高永闯李晓云
王淑敏 高永闯 李晓云
摘要 [目的] 研究“勿忘我”丛生芽诱导及植株再生。 [方法]以勿忘我为试材,取其茎尖、叶片和下胚轴为外植体,进行丛生芽诱导试验。[结果]用茎尖作外植体产生丛生芽数量最多;以MS + 6BA 1.0 mg/L+NAA0.2 mg/L诱导成苗率最高,芽苗健壮;生根阶段以1/2MS+IBA0.2mg/L生根效果最好,生根率可达100%。[结论] 研究勿忘我丛生芽诱导及植株再生具有一定的实践意义和应用价值。
关键词 勿忘我; 丛生芽; 再生植株
中图分类号 S188 文献标识码 A 文章编号 0517-6611(2014)31-10842-03
Study on Cluster Bud Induction and Plant Regeneration of Myosotis sylvatica
WANG Shumin ,GAO Yongchuang,LI Xiaoyun
(College of Life Science, Langfang Teachers University, Langfang, Hebei 065000 )
Abstract [Objective] The aim was to study cluster bud induction and plant regeneration of Myosotis sylvatica.[Method]Using Myosotis sylvatica as test materials, cluster bud induction was carried out taking its stem tip, leaf and hypocotyl as explant . [Result] Cluster bud induction number was the largest using stem tip as explant. MS + 6BA 1.0 mg/L + NAA 0.2 mg/L induction rate was highest,and bud seedling was strong; 1/2 ms + IBA0.2 mg/L rooting effect was best in rooting stage, and rooting rate could reach 100%. [Conclusion] Studying cluster bud induction and plant regeneration of Myosotis sylvatica had certain practical.
Key words Myosotis sylvatica; Cluster bud; Plant regeneration
勿忘我(Limonium sinuatum(L).Mill)属蓝雪科(Plumbaginaceae)补血草属(Limonium)多年生或二年生草本植物,原产地中海沿岸地区,株高可达1.1 m,花色繁多,具有天然干花的特性,花瓣含水量低,富有蜡质,在植株体上呈现出干燥的蜡质或纸质的特色,可以长期保持美丽的花色和花型,是目前天然干花类中作切花批量生产的花之一[1],也可在野生园林中作露地栽培,或剪下作小插花中主花的配花[2]。药理研究表明,勿忘我花茶含有丰富的维生素C,可延缓细胞衰老,提高机体免疫能力,抗病毒,抗癌防癌并能美白肌肤,具有护肤养颜、补肾提神、健胃开胃、调节血脂减肥、促进新陈代谢等功能[3]。
补血草属植物具有大量的不孕枝和同型杂交不孕的特性,种子结实少,若用种子繁殖,种子来源的可靠性限制了批量生产[2]。因此研究勿忘我丛生芽诱导及植株再生具有一定的实践意义和应用价值。
1 材料与方法
1.1 试验材料及处理
1.1.1 试验材料。
选取饱满无虫害的勿忘我种子。
1.1.2 消毒方法。
将勿忘我种子,用无菌水冲洗3次,再用75%乙醇消毒30~40 s,无菌水冲洗5次,分别用0.1%升汞、2%次氯酸钠消毒处理,具体为:……p>
