Mumbai: The Government securities (G-Sec) firmed up on good buying by banks and corporates, while call rate declined at the Overnight call money market on ample liquidity in the banking system amid lack of any demand from borrowing banks. The 8.79 per cent maturing in 2021 jumped to Rs 102.95 from Rs 102.7875 previously, while its yield moved down to 8.33 per cent from 8.35 per cent. The 9.15 per cent maturing in 2024 spiked to Rs 105.9250 from Rs 105.85, while its yield eased to 8.37 per cent from 8.38 per cent. The 8.19 per cent maturing in 2020 shot up to Rs 100.0275 from Rs 99.80, while its yield fell to 8.18 per cent from 8.22 per cent. The 8.15 per cent G-Sec maturing in 2022, the 8.24 per cent G-Sec maturing in 2018 and the 8.28 per cent maturing in 2027 also ended higher at Rs 100.05, Rs 100.1350 and Rs 98.3875 respectively. The overnight call money rate finished lower at 8.10 per cent from last Friday''s close of 8.20 per cent, it moved in a range of 8.20 per cent and 8.00 per cent. The Reserve Bank of India (RBI) under the Liquidity Adjustment Facility (LAF) purchased securities worth Rs 88,685 crore from 36 bids at the one-day repo auction at a fixed rate of 8.00 per cent while sold securities worth Rs 20 crore at one bid at the one-day reverse repo auction at a fixed rate of 7.00 per cent.