Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (10): 203-206.doi: 10.11924/j.issn.1000-6850.2013-2283

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Seed Dormancy and Germination in Endangered Plant Dysosm a versipellis(Hance ) M. Cheng)

Liu YanQin   

  • Received:2013-08-27 Revised:2013-09-24 Online:2014-04-05 Published:2014-04-05

Abstract: Seed of Dysosm a versipellis has the physiological characteristic of long dormancy and low germination in natural conditions.In o rder to investigate the characteristic of dormancy and find the mechanism of dormancy and the optimal method for breaking the dormancy of D. a versipellis seed,some methods such as isolated embryo cultures,soaking seed in GA3,and cold stratification was utilized.The results showed that seed coat and endosperm restriction, D. a versipellis aterf –ripping were principal reasons which caused dormancy.Soaking the seed in 400 mg.L-1 GA3 solution for 24h or cold stratification for 150d could break the dormancy.The optimal method was the 6-7℃stratification for 150d ,after this treatment,the germination percentage and power reached 88.5% and 30.4% respectively.