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草业学报 ›› 2009, Vol. 18 ›› Issue (6): 59-64.

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唐古特白刺组织培养及其培养基筛选研究

郭晔红,蔺海明*,武睿   

  1. 甘肃农业大学农学院,甘肃 兰州 730070
  • 收稿日期:2009-05-02 出版日期:2009-12-20 发布日期:2009-12-20
  • 作者简介:郭晔红(1968-),女,内蒙包头人,副教授,在读博士。E-mail:guoyh@gsau.edu.cn
  • 基金资助:
    甘肃省农牧厅农业生物技术专项(GNSW-2007-07),甘肃省教育厅项目(0702-13)和甘肃省星火计划项目(5HS065-A91-001-06)资助。

Research on tissue culture and medium of Nitraria tangutorum

GUO Ye-hong, LIN Hai-ming, WU Rui   

  1. Agriculture college, Gansu Agricultural University, Lanzhou 730070, China
  • Received:2009-05-02 Online:2009-12-20 Published:2009-12-20

摘要: 本试验选用唐古特白刺幼嫩茎段和叶片作为材料,研究白刺不同外植体的离体培养技术及其适宜的培养基。结果表明,白刺带芽嫩茎是诱导丛生芽的良好外植体,恒温20℃以下,可有效降低白刺丛生芽初代培养污染严重的程度;叶片是诱导愈伤组织的良好外植体,且低浓度生长素2,4-D培养基较高浓度培养基形成的白刺愈伤组织致密,也不易褐化。白刺的最适增殖、壮芽培养基为MS+6-BA 2 mg/L+NAA 1.00 mg/L,而且是以腋芽形成丛生芽的方式进行增殖的;最适生根培养基是1/2 MS+KT 1 mg/L+IBA 0.5 mg/L;形成愈伤组织较好的培养基是MS+2,4-D 0.5~1.0 mg/L。

Abstract: Young stem segments and leaves of Nitraria tangutorum were selected to investigate suitable media and plant regeneration techniques for explants. Immature stems were a good source for explants of tufted shoots, and cultivation at 20℃ can reduce contamination rates of tufted shoots. Leaves were good explants of callus induction as well and a lower concentration of 2,4-D was better for callus than a higher concentration. The optimum multiplication medium for N. tangutorum was MS+6-BA 2 mg/L+NAA 1.00 mg/L and tufted shoots formed from axil buds were the main multiplication method. The optimum medium for root formation was 1/2 MS+KT 1 mg/L+IBA 0.5 mg/L and the optimum medium for callus induction was MS+2.4-D 0.5-1.0 mg/L.

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