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Acta Prataculturae Sinica ›› 2014, Vol. 23 ›› Issue (6): 355-360.DOI: 10.11686/cyxb20140643

• Orginal Article • Previous Articles    

Development of a plant regeneration system via tissue culture in Puccinellia tenuiflora

WANG Xue-fang1,WANG Chun-mei2,ZHANG Jin-lin1,DUAN Li-jie1,WANG Suo-min1   

  1. 1.State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China;
    2.Lanzhou Institute of Husbandry and Pharmaceutical Sciences of CAAS, Lanzhou 730050, China
  • Received:2012-12-03 Online:2014-12-20 Published:2014-12-20

Abstract: The effects of husk-off treatment and various hormone ratios on callus induction and differentiation were investigated using mature seeds of Puccinellia tenuiflora as explants. Finally, a plant regeneration system via tissue culture was established. The husk-off treatment increased seed germination rate and deceased contamination rate significantly. The optimal medium for callus induction was MS medium supplemented with 5.0 mg/L 2,4-D with the highest callus induction rate of 55.2%. The optimal medium for bud differentiation and rooting was MS medium supplemented with 1.0 mg/L 6-BA+0.5 mg/L NAA with the highest bud differentiation rate of 31.7%, the highest rooting rate of 81.7% within a period of two weeks. The rooting rate of regenerated plants was up to 100% on half strength MS medium and their transplant survival rate in soil was also up to 100%. The whole process of plant regeneration via tissue culture lasted for about 16 weeks totally. The establishment of plant regeneration system via tissue culture in P. tenuiflora has laid a foundation for further exploring the molecular mechanism of its salt tolerance.

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