Abstract: Some lines with ps-2 male sterile gene were introduced from Bulgaria. The results observed in the open field proved that their sterility was stable without emasculation. The plants had normal stamen and pollen , and
indehiscent anther. The percentage of selfing fruits was about 5. 25 % - 10. 83 %. Among them , the normally developed fruits with seeds occupied only 3. 8 % - 6. 2 %. Furthermore , the male sterile lines can be maintained
easily by artificial pollination.

Key words: Tomato, Male sterility