摘 要 ：对应用突变体研究细胞分裂素信号转导、细胞分裂素受体以及参与细胞分裂素信号转导相关的蛋白质作了简要介绍；并且对细胞分裂素信号途径进行了推测：细胞分裂素被受体（CKI1、IBC6或者GCR1）接受后，经传导系统转化形成特定的信息，一方面可能调节基因的表达，从而可能调节受体水平，导致细胞对细胞分裂素浓度应答范围发生改变，另外，基因表达使细胞产生相关的生理反应；另一方面形成的特定信息可能激活MAPK级联途径（mitogen-activated protein kinase cascade），导致细胞产生相关的生理反应。
Abstract:This thesis introduced the study of cytokinin_signal transduction by using mutants (cytokinin_receptors and some related proteins are probably involved in cytokinin_signal transduction) and the hypothesis for cytokinin_signal transduction pathway: once cytokinin is accepted by receptors (CKI1, IBC6 or GCR1), it will become typical information via transduction_system. On the one hand, this typical information may regulate genetic expression which might lead to the change of response to the range of cytokinin concentration by regulating receptor level. In addition, genetic expression may have cell exhibit relevant physiological responses. On the other hand, this typical information may activate MAPK cascade, which result in relevant physiological responses.