柿属新种德阳柿组培快繁技术研究
2020-12-21王洋邱晓孙海莲常虹徐莉清
王洋 邱晓 孙海莲 常虹 徐莉清



摘要 为了使德阳柿能够通过组织培养的方式在短期内快速繁殖,探究德阳柿培养基的最适培养条件。取一年生德阳柿枝条上的休眠芽茎段无菌处理后作为外植体,选择不同的基本培养基,对德阳柿组培快繁技术进行研究。结果表明,以MS 为基本培养基的德阳柿休眠芽组培苗萌发率达81.13%,以MS(1/2N)为基本培养基的德阳柿休眠芽萌发率为78.05%;德阳柿诱导休眠芽以MS(1/2N)为基本培养基的长势要优于以MS 为基本培养基。由此可知,MS(1/2N)培养基是德阳柿幼芽初代培养的最适培养基。该研究提供了德阳柿初代培养的最适培养基,为其短期内大量繁殖提供了技术指导和理论支持。
关键词 德阳柿;组培快繁;初代培养;继代培养;无菌操作;接种;育苗
中图分类号 S665.2文献标识码 A文章编号 0517-6611(2020)22-0051-05
doi:10.3969/j.issn.0517-6611.2020.22.015
Study on Tissue Culture and Rapid Propagation of Persimmon from Deyang, a New Species of Persimmon
WANG Yang1,2,3, QIU Xiao1,2, SUN Hai-lian1,2 et al
(1.Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot,Inner Mongolia 010031;2.Inner Mongolia Prataculture Research Center, Chinese Academy of Sciences,Hohhot,Inner Mongolia 010031;3.Huazhong Agricultural University,Wuhan,Hubei 430070)
Abstract In order to make Deyang persimmon multiply rapidly in a short time by tissue culture, the optimum culture conditions of Deyang persimmon were studied. The stem segment of dormant buds on the branches of deyang persimmon was treated asepsis and used as explants. The germination rate of the dormant buds in Deyang persimmon using MS as the basic medium was 81.13%, while the germination rate of the dormant buds in Deyang persimmon using MS(1/2 n) as the basic medium was 78.05%. The growth rate of the dormant buds in Deyang persimmon with MS(1/2 n) as the basic medium was better than that with MS as the basic medium. Finally, it can be concluded that MS(1/2 n) medium was the optimal medium for the primary bud culture of deyang persimmon. This study provided the optimum medium for the primary culture of Deyang persimmon and provided technical guidance and theoretical support for its short-term mass reproduction.
Key words Deyang persimmon;Tissue culture and rapid propagation;Primary culture;Subculture;Aseptic operation;Vaccination;Seedling
作者简介 王洋(1996—),女,内蒙古呼和浩特人,研究实习员,从事草业科学研究。*通信作者,高级工程师,从事种质资源研究。
收稿日期 2020-03-24
德阳柿(Diospyros sp.Deyangshi;2n=4x=60),又稱红花野毛柿,为雌雄异株的落叶果树,主要产自四川省德阳市,是2007年国家柿种质资源圃从四川德阳采集的野生资源。且利用德阳柿的种子播种后长出的实生苗,第二年就能开花[1]。因其具有早花等特性,成为学术界关注的热点问题[2]。
张永芳[3]利用扫描电镜对其进行孢粉学观察和SRAP分子标记分析,将其确定为柿属的一个新品种,并证实为四倍体基因型。发现该品种柿属植物的早花特性在研究果树植物遗传转化方面具有巨大的应用潜力。……
