The invention belongs to the technical field of plant tissue culture, and in particular relates to a tissue culture method for improving the number of effective shoot differentiation of Sorbus japonica. In this method, a set of combination media was used to increase the number of new shoot differentiation of Sorbus macrophylla, which included induction medium, differentiation medium and growth medium. Tissue culture methods to increase the number of differentiation of new shoots of Catalpa grandis include: establishing aseptic system, two-step relay subculture, inducing rooting culture, seedling training, transplanting and so on. This application provides a tissue culture method for Catalpa mandshurica. On the one hand, by optimizing and adjusting the composition of the culture medium, on the other hand, by adjusting the culture mode in the process of subculture, the tissue culture seedlings of Catalpa mandshurica are subcultured in a specific culture medium by two-step relay method, which takes into account both proliferation and growth without prolonging the overall culture time. In the long process, the number of effective shoots was increased, and the vitrification phenomenon in tissue culture was avoided.
【技术实现步骤摘要】
一种提高大叶金丝楸有效新梢分化数量的组织培养方法
本专利技术属于植物组织培养
,具体涉及一种提高大叶金丝楸有效新梢分化数量的组织培养方法。
技术介绍
楸树(CatalpabungiC.A.Mey)是我国较为古老的树种之一,具有一系列优点,主要有:树干通直、树形美观、花色粉红特点;具有较强的消声、滞尘能力,对有害气体有较强的吸收作用;其自花授粉结实力差,没有落果污染环境,同时叶片落期集中,便于清扫;材质优良,加工应用领域广泛。金丝楸(Catalpabungivar.)是楸树的一个地理变种,而大叶金丝楸则是从金丝楸实生后代群体中选育出来的一个优良无性系,与金丝楸相比,具有叶片大、生长速度快、材质优良等特点,既可营造速生丰产林,也可用作防护林,同时又是理想的农林间作树种,还是很好的城市绿化树种,集用材、防护、观赏、环保等多项功能于一体,应用前景非常广阔,在生产中需求旺盛。楸树自古以来一直延用“取傍生者植之”的方法繁衍,进而逐渐形成了单一无性系,但由于这种繁殖方法的繁殖速度较慢,受限较多,因而使楸树的种植发展受到很大限制。为适应绿化栽培的大量需求,采用植物组织培养的方法快速繁殖大叶金丝楸种苗,是推广大叶金丝楸种植和满足市场需求的重要技术手段。就植物组培快繁种苗生产而言,一般而言,不仅要有稳定的增殖系数能够继代扩繁,还要确保足够数量用于生根培养的有效新梢,才能使种苗生产顺利进行。而就金丝楸的组培技术研究而言,对现有采用单一培养基进行金丝楸增殖的技术(翟晓巧等,金丝楸茎段的组织培养及植株再生技术研究,河南农业大学学报,2002,36(4):319-321,培养基 ...
【技术保护点】
1.一组用于提高大叶金丝楸有效新梢分化数量的组合培养基,其特征在于,该组合培养基用于组培过程中提高大叶金丝楸有效新梢分化数量,包括诱导培养基、分化培养基和生长培养基;所述诱导培养基,MS培养基或WPM培养基+蔗糖30 g/L+琼脂6 g/L+6‑BA 0.8mg/L+NAA 或IBA或IAA 0.1 mg/L;所述分化培养基,WPM培养基+蔗糖30 g/L+琼脂6 g/L+6‑BA 0.6~3.0mg/L+IBA 0.1~0.3mg/L;所述生长培养基,MS培养基+蔗糖30 g/L+琼脂6 g/L+6‑BA 0.8~1.0mg/L+IBA 0.1~0.5mg/L。
【技术特征摘要】
1.一组用于提高大叶金丝楸有效新梢分化数量的组合培养基,其特征在于,该组合培养基用于组培过程中提高大叶金丝楸有效新梢分化数量,包括诱导培养基、分化培养基和生长培养基;所述诱导培养基,MS培养基或WPM培养基+蔗糖30g/L+琼脂6g/L+6-BA0.8mg/L+NAA或IBA或IAA0.1mg/L;所述分化培养基,WPM培养基+蔗糖30g/L+琼脂6g/L+6-BA0.6~3.0mg/L+IBA0.1~0.3mg/L;所述生长培养基,MS培养基+蔗糖30g/L+琼脂6g/L+6-BA0.8~1.0mg/L+IBA0.1~0.5mg/L。2.如权利要求1所述用于提高大叶金丝楸有效新梢分化数量的组合培养基,其特征在于,该组合培养基包括生根培养基,所述生根培养基,以MS为基本培养基,其中大量元素减半,附加IBA0~0.8mg/L、NAA0~0.5mg/L、活性炭0~1g/L、蔗糖20g/L、琼脂6g/L。3.如权利要求2所述用于提高大叶金丝楸新梢分化数量的组合培养基,其特征在于,该组合培养基具体为:所述诱导培养基,WPM培养基+蔗糖30g/L+琼脂6g/L+6-BA0.8mg/L+IBA0.1mg/L;所述分化培养基,WPM培养基+蔗糖30g/L+琼脂6g/L+6-BA1.0~2.0mg/L+IBA0.1~0.2mg/L;所述生长培养基,MS培养基+蔗糖30g/L+琼脂6g/L+6-BA0.8mg/L+IBA0.5mg/L;所述生根培养基,1/2MS培养基+IBA0.8mg/L+NAA0.08mg/L...
【专利技术属性】
技术研发人员:李艳敏,王利民,董晓宇,张和臣,符真珠,师曼,蒋卉,王慧娟,高杰,王耀瑭,崔巍,袁欣,冯乃曦,张晶,
申请(专利权)人:河南省农业科学院,
类型:发明
国别省市:河南,41
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