Dorossiev, L. New possibilities for using   sterility   ps   John   Baer in   hybrid   seed   production   of tomato.         [Submitted     by    C. Daskaloff] In crossing line 159 and line 160 (Dorossiev, TGC 25, 1975) the new line No. 180 (sp, c, ex, ps, aw) was obtained. In this   line, because of the nearly full absence of growing together between the petals and anthers and the action factors ex, the stigma is early accessible for pollination, and the presence of two recessive genetic markers c and aw allows the elimination of eventual impurities from self- pollination which in our experiments turned out to be lower than 0.2%. Besides, the volume of work in BC is reduced several times because of the strong linkage of the genes ps and aw, and that allows in BC in F2 to flowering to grow only anthocyaninless plants, which represent 25% of the whole material and nearly all of them are sterile. These peculiarities of line 180 make it very suitable for using in hybrid seed production in tomato.