The drought resistance and genetic structure of F 2 sporophytic populations for some morphological marker traits after pollen selection for water stress tolerance in F 1 sunflower hybrids has been studied. The emasculated inflorescences were moistened with 10% and 20% of PEG 6000 solution in the experiments and with distilled water in the control. Freshly collected pollen was used for pollination after drying up the PEG solution on stigmas. F 2 resulted seeds were germinated in 20% solution of PEG 6000 for a period of 3 days and then the percentage of seed germination was counted. Germinated and not germinated seeds were separately planted. Segregation ratios in F 2 populations for leaf venation and leaf chlorophyll deficiency marker traits were analyzed at early stage of development. Pollen treatment significantly increased the drought resistance of F 2 populations and changed the monogenic ratios for leaf chlorophyll deficiency marker trait.