草莓叶片和叶柄再生体系的建立

以红丰和宝交早生品种的组培苗为试材初步建立了叶圆盘和叶柄片段植株再生体系。红丰的芽再生能力高于宝交早生，叶圆盘的再生频率高于叶柄片段，叶圆上表面（背面）接触培养基上比表面（正面）更有利于再生。ＡｇＮＯ３有利于苗再生，在接种叶圆盘前加入主要刺激芽苗的直接再生，而在愈伤组织形成后加入则主要提高再生频率。再生芽苗在三角瓶中容易生根，移苗入土后生长正常。

Plant regeneration from strawberry leaf disks and petioles

Plants of strawberry(Fragaria ananassaDuch.) from leaf disks and petiole segments were regenerated with two cultivars Denitoyo and Hokowase.Shoots of Denitoyo were more active than those of Hokowase in regeneration ability, and the leaf disks showed much higher regeneration frequency than petiole segments,especially when their lower surfaces were kept contacted with culture medium. Addition of AgNO 3 to the medium at leaf disk inoculation stage directly stimulated shoot regeneration, while markedly increased shoot regeneration frequency at the time after callus formation. All regenerated shoots rooted easily in vitro and the resulted plants grew normally after transplanting in pots.