the present invention relates, in general, the field of molecular biology, as well as the way of improving the various economically important characteristics \u0443\u0440\u043e\u0436\u0430\u0439\u043d\u043e ste in plants. more specifically, the present invention relates to the method of increasing yield in plants by modeling the expression of plant nucleic acid, cody \u0440\u0443\u044e\u0449\u0435\u0439 UPA20 like or WAK like polypeptide.in addition, the present invention relates to plants with modulated expression nucleic acid, \u043a\u043e\u0434\u0438\u0440\u0443\u044e\u0449\u0435\u0439 UPA20 like or WAK like polypeptide, and plants reveal improved performance yield compared to the control plants.the invention is a previously unknown nucleic acid for UPA20 like polypeptide or nucleic acid for WAK like \u043f\u043e\u043b\u0438\u043f\u0435\u043f\u0442\u0438 d, as well as \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u044b which they contain, which is suitable for the implementation of the method according to the invention.according to an alternative form of this invention relates to the method to increase yield of plants, in which the plant lead molecule nucleic acid \u043a\u043e\u0434\u0438\u0440\u0443\u044e\u0449\u0443\u044e CDKB - RKA - polypeptide with reduced \u043a\u0430\u0442\u0430\u043b\u0438\u0447\u0435\u0441\u043a\u043e\u0439 kinase activity and preferably without catalytic activity of kinase and \u044d\u043a\u0441\u043f \u0440\u0438\u043c\u0438\u0440\u0443\u044e\u0442.furthermore, this invention relates to the plants, which have superior characteristics in yield compared with control plants and \u0441\u043e\u0434\u0435 \u0440\u0436\u0430\u0442 CDKB - RKA - polypeptide.in addition, in the alternative, the invention is \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0442\u044b containing CDK - polypeptide type with reduced catalytic activity of kinase and \u043f\u0440\u0435\u0434\u043f\u043e\u0447 \u0442\u0438\u0442\u0435\u043b\u044c\u043d\u043e
