西洋参种子贮存习性的研究

探讨确定西洋参种了的贮存习性，进而为种质资源长期保存和生产实践提供理论依据及方法。本实验用硅胶干燥西洋参种子，使其含量由风干时的５．９％降至３．４％和１．７％。３种含水量的种子密封后置室温、０～５℃、－１８℃和－１９６℃（液态氮）下保存。干燥后保存前用ＴＴＣ法测定种子生活力。保存近半年后，用等电聚焦分析酯酶同工酶，检测种子裂口率、种子根、芽长度和种子田间出苗率等指标，综合评价种子生活力、活力水平。

Studies on the Seed Storage Behaviour of Panax quinquefolius

Seeds of Panax quinquefolius L. with original moisture content of 5.9%, together withthat desiccated over silica gel to moisture contents of 3.4% and 1.7%, were stored at ambient tempera-ture,-5 ℃C, -18 ℃C and -196 ℃C (liquid nitrogen) for 6 months. Influences of desiccation and storage on seed viability were tested by TTC staining, before and after desiccation, and their vigour were evaluatedon tests of seed esterase isozyme isoelectric focusing (IEF), and field test on their rate of splitting and e-mergence,length of bud and root. Results showed that there was no effects on seed viability by desiccationto 3.4% and 1.7% of moisture content, as the TTC staining rates were 100% for all seeds tested immedi-ately after desiccation. No significant differences in seed viability and vigour were detected among seedsstored at defferent temperature as there are no significant difference in vairance analysis for seed split rateand seed emergency rate.