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《Journal of Anhui Agricultural Sciences》 2010-02
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Research on the Dormancy-breaking of Alfalfa Seed with Hormone

LIU Jian-li(College of Biological Science and Engineering,Northern University for Nationalities,Yinchuan,Ningxia 750021)  
[Objective] The response of alfalfa seed germination to the exogenous hormone was researched in the experiment.[Method] The filter papers as germination bed were soaked with 0.1,1.0,1.5 and 2.0 μmol/L 6-benzylaminopurine(6-BA),gibberellic acid(GA3),abscisic acid(ABA),NAA,ethephon,indole acetic acid(IAA) and indole butyric acid(IBA),respectively,and then each 50 alfalfa seeds were put on each paper for their germination testing and the paper soaked with the distilled water was used as the control.The germination rate,germination energy,germination index and germination days were analyzed and compared.[Results] The exogenous hormone: 6-BA,GA3,IBA and ethephon,could promote the germination of alfalfa seeds while they were above a certain concentration.The efficiency of 6-BA,GA3 and ethephon on seed germination was stronger than that of IBA.NAA and IAA had the inhibition role in alfalfa seed germination at low concentration but the inhibition could be removed with the increment of the concentration of the NAA and IAA.The ABA inhibited the alfalfa seed germination and the order of inhibition was ABA IAA NAA.[Conclusion] The reference data was provided which could be beneficial to clarifying the relationship between the mechanism of alfalfa seed dormancy/germination and the regulation of the hormone.
【Fund】: 宁夏回族自治区自然科学基金项目(NZ0690)
【CateGory Index】: S54
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