Abstract: Three kinds of rice seeds (Oryza sativa L.)were ultradryly treated by usin g an approach of silica gel drying, and then stored for nine years under room temperature and airtight condition. Seed germination parameters and POD and SOD ac tivities were investigated. Results showed that japonica rice seeds (Xiushui 37 ) were not suitable to store for long-term under room temperature. While indic a rice seeds (Zhe 733) and hybrid rice seeds(Xieyou 46, Shanyou 63) could be stored very long in ultradry condition. The viability and vigor of indica rice see ds with 2.7% moisture content and hybrid ones with 5% were the highest, and their germination rate was about 80%. The storability of hybrid rice seeds were high er compared with indica rice seeds and their germination rate only reduced by 8 %-9%. Both viability and vigor of indica and hybrid rice seeds were significantl y reduced when moisture contents were too low or too high. Positive correlations were observed between POD activity and the viability or vigor of the seeds.

Key words: ultradry storage, viability, vigor, rice, seed

摘要： 采用硅胶干燥的方法对籼稻、粳稻和杂交籼稻3种类型的种子进行超干处理，并经过9年室温密闭贮藏。通过发芽试验、过氧化物酶（POD）和超氧歧化酶（SOD）活性测定表明，粳稻秀水37的种子不适宜室温下长期贮藏，籼稻（浙733）和杂交籼稻（协优46、汕优63）种子在含水量分别降至2.7%和5.0%左右时生活力和活力最高，发芽率达到80%左右，其中杂交籼稻种子耐藏性更好，发芽率只下降了8%~9%；但在过高或过低的含水量条件下，种子的生活力和活力均明显下降。POD活性与种子生活力和活力呈正相关。

关键词: 超干贮藏, 生活力, 活力, 水稻, 种子