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完成形态后熟和生理后熟期中的人参（PanaxyinsenyC．A．Mey）湿润种子的含水量由47％降至9．4％和5．8％，形成于籽后保存于室温，0～5℃和-196℃条件下1～3年。保存后的形态后熟于籽再低温处理，继续完成生理后熟。结果显示：完成形态后熟的种子在1～5℃保存1年后，种子胚根能萌发，但胚轴、胚芽不能正常生长，保存3年，种子丧失生活力；生理后熟期中的种子在0～5℃保存1年尚能正常出苗，出苗率为44．0％，保存3年，种胚已不能正常发育。但是在-196℃保存3年后，出苗率同保存在0～5C1年的相近．仍为43．1％。说明完成形态后熟种子还没有产生足够的脱水耐性，而经低温层积处理于生理后熟期中的种子就具有了这种耐性，并能进行低温短期或超低温长期保存。
The water content of the wet seeds of Panaxyinseny C.A. Meyer in morphological ripening and physiological ripening stages was reduced from 47% to 9.4% and 5.8%, and formed in seeds and stored at room temperature at 0-5 ° C And -196 ℃ under the conditions of 1 to 3 years. After the preservation of the morphology and then cooked seed low temperature treatment, continue to complete the physiological ripening. The results showed that seed germination could be achieved after 1 ~ 5 ℃ stored for 1 year, but the hypocotyl and germ could not grow normally, and the seeds could not survive for 3 years after storage. The seed in physiological ripening stage was 0 ~ 5 ℃ 1 year can still be normal emergence, the emergence rate of 44.0%, save 3 years, the embryo has not normal development. However, after 3 years of storage at -196 ℃, the germination rate was kept at 0-5C1 years. Still 43.1%. The results showed that the mature seeds did not produce sufficient dehydration tolerance after the morphological morphological morphological changes, while the seeds treated by cold stratification in the physiological ripening stage had such patience and could be stored for a short time at low temperature or at low temperature.