Effects of Holding Irrigation at Reproductive Stages and Putrescine and Bio Fertilizers Application on Grain Filling Period, Chlorophyll Content and Yield of Wheat (Triticum aestivum L.) Journal title: Iranian Journal of Field Crops Research Authors: A Mohseni Mohammadjanlou,R Seyedsharifi,S Khomari, Subject(s): Agricultural Science, Plant Sciences