榧树属植物的无性繁殖技术研究进展

doi:10.13560/j.cnki.biotech.bull.1985.2020-0155

摘要/Abstract

摘要：

榧树属植物现存7种,有性生殖障碍大,野生种质资源稀少,多为渐危至濒危的重点保护植物。无性繁殖是扩大种群规模,保护及开发利用该属植物的必要前提,目前所用技术主要是嫁接、组织培养和扦插。其中,嫁接成功率受接穗与砧木的亲和力及活力、嫁接方法与嫁接时期等影响;组织培养效果与植物基因型、外植体类型及取材时间、基本培养基种类、激素种类及浓度、外源添加物、培养环境等密切相关;扦插生根率高低与插穗类型,扦插时期,扦插基质,外源激素的种类、浓度和处理时间以及扦插后管理等密切相关。未来还需继续加强无性繁殖技术研究,并探索其机理,从根源上解决榧树属植物无性繁殖难题,全面推进无性繁殖技术在榧树属植物种群扩大中的应用。

关键词: 榧树属, 快速繁殖, 扦插, 嫁接, 组织培养

Abstract:

There are 7 species of genus Torreya in existence,with large barriers of sexual reproduction and scarce wild germplasm resources. Most of them are key protected plants that are gradually endangered to endangered. Asexual reproduction is an essential prerequisite for expanding the population size,protecting,developing and using this genus. The current techniques used are mainly grafting,tissue culture and cuttings. Among them,the success rate of grafting is affected by the affinity and vigor of scion and rootstock,grafting method and grafting period,etc.;tissue culture effect are closely related to plant genotype,explant type and material extraction time,basic medium type,hormone type and concentration,exogenous additives and culture environment;the rooting rate of cuttings is closely related to cutting type,cutting period,cutting substrate,the type,concentration and treatment time of exogenous hormones,and management after cutting. In the future,it is necessary to continue to strengthen the research on asexual reproduction technology,and to explore its mechanism,thus to fundamentally solve the problem of asexual reproduction of the genus Torreya,and finally to comprehensively promote the application of asexual reproduction technology in the expansion of the population of genus Torreya.

Key words: Torreya Arn, rapid propagation, cutting, graft, tissue culture

王小河, 辜夕容, 李杰, 崔瑶. 榧树属植物的无性繁殖技术研究进展[J]. 生物技术通报, 2020, 36(12): 178-187.

WANG Xiao-he, GU Xi-rong, LI Jie, CUI Yao. Review on Vegetative Propagation Techniques of Torreya Arn.[J]. Biotechnology Bulletin, 2020, 36(12): 178-187.

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