关键词: 谷子, PEG胁迫, 萌发期, 抗旱性

Abstract: In order to evaluate the drought resistance of main cultivated millet varieties during seed germination stage, germination rate，germination energy，germination index，sprout length and sprout fresh weight were measured under drought stress simulated with different concentrations of PEG-6000 (0, 5%, 10%, 15%, 20% and 25%). The results showed: ①under non-stress condition (CK), germination characteristics of 8 millet varieties was different and seed germinating period of conventional millet varieties was shorter than hybrid millet varieties, ②the low consistence PEG-6000 could improve seed germination rate and germination energy of some millet varieties, but with the concentration  increased, the inhibitory also increased, five indexes decreased with increasing concentration of PEG-6000. Using fuzzy membership function method. The comprehensive evaluation of drought resistance of 8 millet varieties,  indicated that Zhangzagu 5 and Zhangzagu 3 showed the highest and the lowest drought resistances respectively during seed germination period.

Key words: millet(Setaria italica), PEG stress, germination period, drought resistance