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Progress on Seed Dormancy Cause and Pregermination Method of Rosa L.

XU Duyi1,2,DENG Guanghua1,GE Hong2,XIE Bing1(1.College of Landscape Architecture and Art,Jiangxi Agriculture University,Nanchang Jiangxi 330045,China; 2.Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China)  
It is suggested that the relatively high level of ABA in the pericarp and testa of Rosa is the major cause of the achene dormancy.Because of the comprehensive deep dormancy characteristic,methods to relieve dormancy were summarized in this paper,such as acid-treatment,shell-cracking,stratification and soaking in solution of hormone.
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