【摘要】 试验区分杨树花药愈伤组织三种类型：花粉、花丝和药壁或药隔愈伤组织。显然，激光能提高花粉愈伤组织的芽分化率。更多还原

【Abstract】 The type of callus of poplar anthers can be divided into three groups,pollen(Po),filament(Fi)and endothecium(En)callus. It is evident that bud differentiation rate of pollen callus is stimulating in poplaranthers culture induced by laser.更多还原