Effects of different plant regulators on rooting of Actinidia chinensis cutting The Establishment of High-frequency Plant Regeneration System from the Radicle Tip of Chinese Chive(Allium tuberosum Rottler) THE APPLICATION OF ORTHOGONAL LATIN SQUARE EXPERIMENT IN THE CULTURE IN VITRO OF CHINESE GOOSEBERRY Study on preservation in vitro of Morinda officinalis Micropropagation of Cym bidium hybridum by Inducementof PLB from Cuted Ba se of in vitro Plantlets Study on the Effects of Growth Regulator PP333, GA3 and BA on Potato Seedlings Cultured in vitro