2014•DOAJ (DOAJ: Directory of Open Access Journals)Requires access
Effects of Light and Temperature on Seed Germination of Glycyrrhiza uralensis under Different Pretreatment
MA Hai-g
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Abstract
In order to determine the best temperature and light conditions for Glycyrrhiza uralensis seed germination and seedling growth,the effects of different light and temperature conditions on the germination of Glycyrrhiza uralensis seed under the pretreatment of concentrated sulfuric acid and water were analyzed in the biochemical incubator.The results indicated that:（1）the pretreatment of concentrated sulfuric acid significantly increased the germination rate and made the germination nearly keep in the same time;（2）the germination temperature for Glycyrrhiza uralensis seed was 1040℃,but it would inhibit seed germination and seedling growth when the temperature was too high or too low,the optimum temperature was 2030℃;（3）seed under pretreatment of water was readily germinated when the light was given for 10h/d,and pretreatment of concentrated sulfuric acid can reduce seed dependence on light,full dark can accelerate the growth of seedling radicle and hypocotyl.The suitable germination condition of Glycyrrhiza uralensis seed was 2030℃,lighting 10h/d,20℃was suitable for seedling′s radicle,while 30℃ was favorable for the hypocotyl.