一品红离体培养中ZT对愈伤组织和器官发生的影响

以一品红(Euphorbia pulcherrima willd)幼茎、幼叶为外植体，在MS ZT培养基上，愈伤组织的诱导率不同，幼茎效果较好，诱导率达85．4％；ZT的浓度，影响愈伤组织的生长状态——绿色、瘤状或白色、疏松；ZT与NAA、2，4-D的组合有利于芽的分化，最高分化率分别为95．3％、86．6％。单因子或组合因子条件下，对根的影响较小。ZT与2，4-D的组合有利于胚状体的形成。

Effect of ZT on the Product of Callus and the Organs Differentiation of Euphorbia Pulcherrima Willd

The young steam and leaf of Euphorbia pulcherrima willd were planted on MS ZT as a plant to introduce callus . There is a different by the different explants .Young steam is the best explant, When inductivity was 85.4%. The state of the callus was effected by the density of ZT. Its green tumor or white porous. ZT NAA;ZT 2,4-D effected the buds reproducibility rate that is 95.3%,86.6% each other. ZT NAA, ZT 2,4-D has not obvious contributed to the vitro of roots ;ZT 2,4-D has contributed to the vitro of embryoids.