【摘要】 应用离体黄瓜（Cucumis sativus L.）子叶生根试法测定了几种抑制剂对钾和IAA诱导生根的影响。实验结果表明:7×10^-4～7×10^-1mmol/L的5-氟尿嘧啶和3.5×10^-4～1.05×10^-2mmoL/L的环已亚胺明显抑制钾和IAA诱导的离体黄瓜子叶的生根;0.1～1.0mmol/L的钒酸钠显著抑制钾和IAA诱导的离体黄瓜子叶的生根;2×10^-4～2×10^-1mmol/L的2,3,5-三碘苯甲酸也明显抑制钾和IAA诱导的离体黄瓜子叶的生根。钾诱导的生根与IAA诱导的生根密切相关,有可能钾对生根的促进作用是通过影响内源IAA的水平而实现的。更多还原

【Abstract】 The effects of some inhibitors on potassium- and IAA-induced rooting were studied adopting the root-formation bioassay in the excised cucumber ( Cucumis sativus L. ) cotyledon. 5-flu-orouracil at 7 × 10-4 - 7× 10-1 mmol/L and cycloheximide at 3.5 × 10-4 - 1.05 × 10-2 mmol/L significantly inhibited potassium- and IAA-induced adventitious root formation of the excised cucumber cotyledons, respectively .Na3VO4 at 0. 1 - 1.0 mmol/L obviously inhibited potassium- and IAA-induced adventitious rooting of the excised cucumber cotyledons, and similar inhibitory effect was found with 2,3,5-triiodobenzoic acid (TIBA) at 2×10-4-2×10-1 mmol/L. There is a close relationship between potassium- and IAA-induced adventitious rooting and the promotive effect of potassium on rooting is possibly brought about via affecting the endogenous level of IAA.更多还原