نوع مقاله : مقاله تحقیقاتی
عنوان مقاله [English]
To evaluate the anti-transpiration effect on yield and yield components of corn late yield 704 under drought stress experiment split factorial randomized complete block design with three replications in spring 2012 at the research station, Kermanshah. And paclobutrazol treatments include salicylic acid, which is taking on two levels. Based on the values determined in the following order foliar sprayed at a concentration of 0.5 mM done for salicylic acid and 50 mg for 6 to 8 leaf stage of paclobutrazol and spraying took place. Drought stress also included in the fourth stage of normal irrigation, lack of irrigation in 8-sheet, 12-sheet absence of irrigation and no irrigation was applied at tassel emergence. Drought stress has a significant effect on the number of kernels per row, number of rows per ear, grain weight, grain yield and biological yield and harvest index was corn. The highest grain yield in drought stress in normal irrigation with 9408 kg per hectare and the lowest in the absence of irrigation tasseling with 5059 kg per hectare, respectively. Anti-transpiration effect of a significant number of kernel rows per ear, grain weight, grain yield and biological yield and harvest index was corn. Substance with anti-transpiration highest grain yield of 7453 kg per hectare in the case of acid consumption and the lowest in a state of drug use anti-transpiration with 5422 kg per hectare, respectively. The interaction of water stress and anti-perspiration material on biological yield and harvest index was significant.and physiological increase corn.