| The Tilia is fine garden ornamental ,which shape is beauty and the leaf is big .umbrage is great ,the shape of leave is levity and the life is long .at the same time the spiciness of the flower is strong ,the plant diseases and insect pests are litter the fastness is strong to soot and deleterious gas.To fulfill in needing of vivescence and odtain lots of tilia seedling,In.this paper studies on tissue culture of T.platyphyllos 'Aurea' , Tilia europaea 'Pallida , Tilia mands -hurica Rupr.et Maxim , Tilia amurensis Rupr, Tilia mongolica Maxim. We assessed the effects of genotypes ,the type of explants ,instiation medium,hormones and explants. Physiological stages in course of adventitious bud regeneration. Regeneration. System of birch was estab -lished in vitro.1 Pollution ControlUsing tilia stem as explant of tissue culture .The ratio of pollution is season.4~5 months <6~7months<8~9months |
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