Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (22): 32-36.doi: 10.11924/j.issn.1000-6850.casb15110136

Special Issue: 生物技术

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Tissue Culture of Endangered Psammophyte Ammopiptanthus mongolicus

张莹花1,张锦春1,丁春发2,赵 颖2Wang Fanglin1,2, Chai Chengwu1, Yu Qiushi1, Wei Xiaohong2, Ma Junmei1, Li Aide1, Wang Yuqi1, Zhang Yinghua1, Zhang Jinchun1, Ding Chunfa2, Zhao Ying2   

  1. (1The State Key Laboratory of Desertification Combating Prevention and Sandstorm Disaster of Gansu Province/Gansu Desert Control Research Institute, Wuwei Gansu 733000;2College of Life Science and Technology, Gansu Agricultural University, Lanzhou 730070)
  • Received:2015-11-26 Revised:2016-08-01 Accepted:2016-05-31 Online:2016-08-09 Published:2016-08-09

Abstract: The paper aims to test effects of medium with different hormone combinations on explants callus culture, buds proliferation and rooting culture of rare and endangered plants Ammopiptanthus with aseptic cotyledons and stem segments as explants materials, and screen the optimum medium formula for each culture stage. The results showed that cotyledon was the best explants to induct callus of Ammopiptanthus. The callus induction rate reached its maximum 81.8% at 6-BA 0.5 mg/L, 2,4-D 0.5 mg/L. The clustered buds proliferation rate reached the maximum of 90.2% at 6-BA 2.0 mg/L, NAA 0.5 mg/L. The phenomenon of multiple clustered buds, robust stem and vigorous growth was observed, indicating that higher concentrations of cell division 6-BA could significantly promote cluster bud proliferation. The rooting rate reached the maximum of 70.4% in 1/2MS basic medium added with NAA 1.0 mg/L, the rooting time was the earliest, with obvious main root, which was stout and hairy. The key point in psammophytes tissue culture research will be adjusting inorganic salt concentration in the medium properly to improve the rooting rate.