稻种资源低温贮藏生活力跟踪监测与种质更新

对广西农业科学院种质库贮藏保存的水稻种质资源、不同贮藏年限的发芽率（生活力）情况进行跟踪研究和预警分析，并对相关种质进行及时更新补充入库。

Track Monitoring on Viability of Rice Germplasm Resources and Regeneration under Low Temperature Storage

53 rice germplasm resources warehoused during 1981-1984 were regarded as materials to monitor the viability at warehouse time and different years after warehoused.The results showed that seed germination rates of different rice germplasm resources assumed descending trend in storage,with annual decreasing rate between 0.12%-3.O5%;the seed germination rates of most cultivars were above 75% after stored for 26 yeats;forecasting analysis based on the germination rate of 75% as reference showed a huge difference of safe storage life for different rice gennplasm resources,ranging from 12 to 50 years,even longer time.The results suggest that track monitoring on viability and regeneration of rice cultivars is of great importance for germplasm resources conservation.