JGB futures jump a full point as Nikkei tumbles

TOKYO, Oct 23 (Reuters) - Japanese government bond futures extended gains to rise more than a full point on Thursday as a slide in Tokyo shares and worries about the global economic outlook triggered safe-haven buying of government debt.

December 10-year JGB futures rose 1.15 point to 137.76 2JGBv1.

The benchmark 10-year JGB yield fell 7 basis points to 1.470 percent JP10YTN=JBTC. (Reporting by Masayuki Kitano)