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Acta Prataculturae Sinica ›› 2010, Vol. 19 ›› Issue (4): 41-46.

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A study on soaking and germination characteristics of Fritillaria przewalskii seeds

CHANG Yan-li1, CHEN Yuan1, GUO Feng-xia1, LIN Yu-hong2, LI Tian3   

  1. 1.Gansu Provincial Key Laboratory of Aridland Crop Science;
    College of Agronomy, Gansu Agricultural
    University;
    College of Life Sciences and Technology, Gansu Agricultural University, Lanzhou
    730070, China;
    2.Institute of Biotechnology, Gansu Academy of Agricultural Sciences,
    Lanzhou 730070, China;
    3.The Extension Station of Gannanzhou
    Agricultural Technologies, Gannan 747000, China
  • Received:2009-09-01 Online:2010-08-20 Published:2010-08-20

Abstract: The effect of soaking Fritillaria przewalskii seeds following after-ripening, and the seed germination characteristics at different temperatures (10, 15, 20, 25, 10/20℃ change), were measured in order to provide a theoretical basis for their artificially domesticated cultivation. The 1000-grain weight ranged from 0.72 to 0.82 g. The seeds completed morphologic after-ripening following storage for 45 d at 20℃ and physiological after-ripening after seeds were mixed with sand (sand∶seed ratio of 4∶1) for 150 d at 5-10℃. The soaking process fitted a Logistic curve, which included sharp soaking, stable soaking and saturated soaking stages. Under dark conditions, the seed germination quality improved with increased temperature and reached an optimum at 15℃ with a germination rate of 90.67% and germination power of 89.33%. However, when the temperature exceeded 15℃, seed germination was significantly reduced and sprout growth was restrained. Temperature was the key condition for seed germination following after-ripening. This suggests that the best time to sow F. przewalskii seeds is under humid and adumbral conditions when the soil temperature is 15℃.

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