【摘要】 采用金鱼草下胚轴为外植体，培养于附加不同激素浓度组合ＭＳ固体培养基上．其外植体对激素的反应表现出很大的差异．在附加２，４－Ｄ培养基上，下胚轴可诱导形成淡基色愈伤组织，但不易分化；培养于附加ＢＡ培养基上，外植体可诱导产生丛生不定芽．将不定芽转移至附加ＮＡＡ培养基上，可诱导根的形成．细胞学观察证实下胚轴不定芽的发生起源于表皮细胞更多还原

【Abstract】 The hypocotyl explants from Antirrhinum majus L. were cultured on MS agar medium with different plant growth regulator concentrations and combinations. Large differences were found in the responses of the hypocotyl explants. On the medium with 2,4 D(1～2 mg/L), the explants were found to produce healthy, viable and yellowish calli which did not differentiate to generate buds; but on the medium with 6 BA(2 mg/L) and NAA(0.2～0.5 mg/L),the explants produced healthy plantlets and yellowish calli. Shoots formed from the buds on MS agar medium supplemented with 6 BA(0.5～2 mg/L) and NAA(0～1 mg/L).These shoots, if transferred individually to MS agar medium with NAA(0.5～2 mg/L), produced roots at their bases. On the medium with NAA 0.5 mg/L, the roots of plantlets were healthy. Cytological observations indicated that the plant regeneration originated from epidermic cells of the explants.更多还原