in. cv. Gannong No2, Medicago sativa L. cv. Gannong No3) .The results showed that: various concentrations of PEG-simulated drought stress on seed germination there is a certain delay and reduce the effect. Germination rate and germination potential showed a clear downward trend with water stress increased, when the PEG concentration is less than 150 g • L – 1 there is a small decrease, the contrary, a decrease greater; germ and the length of radicle gradually shortened with PEG solution increased, the germ / radicle reduced.РKeywords:Water stress; Alfalfa; Germination rate; Germination potentialР致谢Р本试验的构思和设计是在陈本建老师的悉心指导和帮助下完成的,在论文完成之际向恩师表示我最诚挚的谢意!本论文从选题、实施,到论文的写作、修改、定稿无不渗透着老师的关怀和指导。在实习期间,导师渊博的知识、严谨的治学态度、敏锐的思维和执著的敬业精神深深感染着我;在实验过程中,陈本建老师提供了很多方案上的支持;在写作过程中还得到了李建伟和冯忠心师兄的帮助。最后,再次向老师和同学们表示衷心的感谢!
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