The experiment were done in Huanan Agricultural University from 2002-2005.Taking the diploid Vitis davidii seeds provided by Agricultural Bureau of Hecheng district in Huaihua city for materaials,we treated seeds by 0.2%、 0.3%、 0.4%different densities of Colchicine,and abtained teraploid Vitis davidii germplasm (Including chimera)first time.The morphological, cytological,biochemical and physiological characteristics of the mutated plantlets were studied systematically in comparison with that of diploid Viti...