APP下载

苦糖果愈伤组织诱导与不定芽分化研究

2021-09-03赵莹陈甘牛路兆军马旭升苗杰

安徽农业科学 2021年14期

赵莹 陈甘牛 路兆军 马旭升 苗杰

摘要 [目的]建立苦糖果再生体系,保存种质资源。[方法]以苦糖果种子诱导的幼嫩茎段为外植体,接种在附加6-BA、IBA等不同浓度植物激素和营养物质的培养基上,研究不同培养条件对愈伤组织诱导及不定芽分化的影响。[结果]在不同的培养基、激素种类和激素浓度条件下,愈伤组织的诱导形成有很大差异。相同浓度激素条件下,以MS为基本培养基可诱导出苦糖果愈伤组织,最佳配方为MS+6-BA 0.5 mg/L +IBA 1.0 mg/L,诱导率为76.26%,而1/2MS培养基上无愈伤组织出现。经过愈伤组织的增殖和分化培养,最佳分化培养基为MS+6-BA 1.0 mg/L +IBA 0.05 mg/L,芽分化率达67.40%。[结论]该研究实现了苦糖果愈伤组织诱导并获得再生植株,初步建立起苦糖果植株再生体系。

关键词 苦糖果;茎段;愈伤组织;不定芽;分化

中图分类号 S 723  文献标识码 A

文章编号 0517-6611(2021)14-0098-03

Abstract [Objective]To establish the regeneration system of  L.fragrantissima  ssp. standishii  (Carr.) and preserve the germplasm resources.[Method]The young and tender stem segments induced from the seed of  L.fragrantissima  ssp. standishii  (Carr.) were used as explants and cultured on medium supplemented with different kinds of plant hormones and nutrients.The effect of 6-BA,IBA and culture conditions for callus induction and adventitious bud differentiation were described respectively.[Result]Under the condition of the same concentration of hormone,MS as the basic medium could induce callus.The best formula was MS + 6-BA 0.5 mg/L + IBA 1.0 mg/L,the induction rate was 76.26%.However,there was no callus appeared when 1/2MS medium was used.After callus proliferation and differentiation culture,the best differentiation medium was MS + 6-BA 1.0 mg/L + IBA 0.05 mg/L,and the bud differentiation rate reached 67.40%.[Conclusion]In this study,callus induction and plant regeneration of  L.fragrantissima  ssp.  standishii  (Carr.) were achieved,and plant regeneration system was established.

Key words  L.fragrantissima  ssp.  standishii  (Carr.);Stem;Callus;Adventitious bud;Differentiation

基金項目 山东省重点研发计划(2018GNC113005)。

作者简介 赵莹(1989—),女,山东东营人,助理工程师,硕士,从事林业植物生理研究。*通信作者,工程师,硕士,从事森林培育和林木遗传育种研究。

收稿日期 2020-10-23

苦糖果[ Lonicera fragrantissima  ssp.  standishii  (Carr.) Hsu et H.J.Wang],又名羊奶子、衩八果、裤裆果、驴驮布袋,忍冬科 (Caprifoliaceae) 忍冬属郁香忍冬的亚种[1]。该植物果实富含糖[1],色红汁甜,嫩枝叶还可入药,祛风除湿,清热止痛[2],还是优良的水土保持树种[3]。苦糖果在我国广泛分布,多生长于海拔100~2 000 m向阳坡地内或溪涧旁,现存植株大部分为野生种,人工集中种植较少,目前仅上海、杭州、武汉等地有零星栽培[4],致使其繁育的植物材料极其有限。为了保存苦糖果优良种质资源和尽早实现野生资源的开发和利用,采用组织培养进行有性繁殖,具有繁殖速度快,生长周期短,不受季节影响,保存量成数量级增长等优点,是短时间内解决资源短缺的有效途径之一[5]。……

登录APP查看全文