Analysis of effects of trifluoromethanesulfonamide in sorghum inbred lines and their derived hybrids

In sorghum [Sorghum bicolor (L.) Moench], development of male-sterile versions (A-lines) the seed parents (B-lines) is a tedious and time-consuming process limiting opportunities for improvement new parents. Assessment value potential parent requires testcross hybrid evaluations, but because male fertility these lines, conventional methods are inadequate to generate required testing. Mechanisms reduce number lines that require sterilization would be beneficial. The chemical gametocide trifluoromethanesulfonamide (TFMSA) was evaluated its applicability seed. To study effect on inbred line productivity, foliar applications 25 mg TFMSA were made select set male-fertile B-lines compared corresponding untreated A-line. Trifluoromethanesulfonamide induced near-complete male-sterility allowed production across range genotypes. Comparison indicated an average 3-d delay in flowering 13-cm reduction plant height. Furthermore, weight per panicle (productivity) reduced by 8 g. hybrids produced cytoplasmic did not reveal any significant meaningful differences between derived from both sterility systems. Moreover, ranked consistently These results show can affect productivity treated hybrid, which demonstrates used produce evaluation prior investment sterilizing lines.