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草业学报 ›› 2012, Vol. 21 ›› Issue (4): 98-104.

• 研究论文 • 上一篇    下一篇

柳枝稷人工穗芽高效再生体系的建立

柴乖强1,徐开杰1,王勇峰1,孙风丽1,宋立立2,刘曙东1,奚亚军1*   

  1. 1.西北农林科技大学农学院,陕西 杨凌 712100;
    2.沧州师范学院生命科学系, 河北 沧州 061001
  • 收稿日期:2012-01-27 出版日期:2012-04-25 发布日期:2012-08-20
  • 通讯作者: E-mail:xiyajun11@126.com
  • 作者简介:柴乖强(1986-),男,陕西宝鸡人,在读硕士。E-mail:chaiguaiqiang@126.com
  • 基金资助:
    国家自然科学基金(30871571,31171607),国家948计划项目(2011-G1-19)和西北农林科技大学基本科研业务费专项资金(CX200903)资助。

Establishment of a highly efficient regeneration system of switchgrass artificial spike buds

CHAI Guai-qiang1, XU Kai-jie1, WANG Yong-feng1, SUN Feng-li1, SONG Li-li2, LIU Shu-dong1, XI Ya-jun1   

  1. 1.College of Agronomy, Northwest A&F University, Shaanxi 712100, China;
    2.Department of Life Science, Cangzhou Normal University, Cangzhou 061001, China
  • Received:2012-01-27 Online:2012-04-25 Published:2012-08-20

摘要: 以柳枝稷‘西稷1号’、‘西稷2号’和‘西稷3号’3个基因型的幼穗为材料,采用单因素试验依次从基因型、幼穗长度、激素、初次切割时期穗芽长度、大量培养阶段穗芽长度、碳源、pH值、穗芽块的切割方式和生根培养基等对柳枝稷人工穗芽再生体系进行了优化研究,建立了柳枝稷人工穗芽高效再生体系,即基因型选用西稷1号,幼穗长度为1.5 cm,激素采用3.0 mg/L 6-BA+0.1 mg/L 2,4-D, 初次切割时期和大量培养阶段穗芽长度均为1.5 cm,碳源采用麦芽糖,pH值5.8,穗芽块采用纵切方式,并以1/2 MS培养基作为生根培养基,增殖效率可高达4 167.00%。

Abstract: With inflorescence of three genotypes of Xiji No.1, Xiji No.2, Xiji No.3 as materials, using single factor design consider factors including genotype, panicle length, phytohormone, the length of spike buds in the initial cutting period and in mass cultivating period, the carbon source, pH, spike buds cutting way and root induction medium, to optimize the regeneration system of switchgrass (Panicum virgatum) artificial spike buds. The optimal regeneration system was: genotype Xiji No.1, panicle length 1.5 cm, 3.0 mg/L 6-BA+0.1 mg/L 2,4-D as phytohormone, the length of spike buds in the initial cutting period and in mass cultivating period was 1.5 cm, maltose as carbon source, pH 5.8, vertical spike buds cutting, and 1/2 MS as root induction medium. The proliferation efficiency of switchgrass artificial spike buds might reach up to 4 167.00%.

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