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Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (26): 22-26.doi: 10.11924/j.issn.1000-6850.2014-0276

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Effect of Water Stress Simulated by PEG on Seed Germination of Achnatherum inebriants (Hance) Keng

  

  • Received:2014-01-29 Revised:2014-03-12 Online:2014-09-15 Published:2014-09-15

Abstract: Achnatherum inebriants is the main poisonous weed in Xinjiang pasture. In order to reveal its adaptive mechanism of water stress, the effect on seed germination of A. inebriants under different PEG concentration (the percentage of mass and volume was 0% , 5% , 10% , 15% ) was studied with the paper germination method. The results showed that the germination rate of A. inebriants was improved under low PEG concentration from 5% to 10%, the germination energy, germination index, vitality index and germ length of A. inebriants were decreased under high PEG concentration of 15%, but the radical length was increased. There was significant difference on germination rate, germination energy, germination index of different A. inebriants under PEG stress(P<0.05), and its drought resistance of low-middle elevation from 1650 m to 1832 m was higher than that of high elevation of 2287 m.