The 2-oxo-3，4- dihydroquinoline compound as a plant growth regulator

The present invention relates to novel sulfonamide derivatives of formula (I)， to processes and intermediates for preparing them， to plant growth regulator compositions comprising them and to methods of using them for controlling the growth of plants， improving plant tolerance to abiotic stress (including environmental and chemical stresses)， inhibiting seed germination and/or safening a plant against phytotoxic effects of chemicals. The present invention relates to novel sulfonamide derivatives of formula (I)， to processes and intermediates for preparing them， to plant growth regulator compositions comprising them and to methods of using them for controlling the growth of plants， improving plant tolerance to abiotic stress (including environmental and chemical stresses)， inhibiting seed germination and/or safening a plant against phytotoxic effects of chemicals.本发明涉及式(I)所示的新型磺酰胺衍生物、其制备方法及制备中间体、包含该类衍生物的植物生长调节剂组合物，以及用于调控植物生长、提升植物对非生物胁迫（涵盖环境胁迫与化学胁迫）的耐受性、抑制种子萌发，和/或缓解化学品对植物产生的药害作用的应用方法。本发明涉及式(I)所示的新型磺酰胺衍生物、其制备方法及制备中间体、包含该类衍生物的植物生长调节剂组合物，以及用于调控植物生长、提升植物对非生物胁迫（涵盖环境胁迫与化学胁迫）的耐受性、抑制种子萌发，和/或缓解化学品对植物产生的药害作用的应用方法。