本研究的目的是确定在巴西的Pelotas地区的环境温度下,用密封罐储藏低含水量的洋葱种子的储藏性能;验证Ellis和Robert(1980)所提出的种子生活力方程能否被用来预测在仓库储藏期间、变温情况下洋葱种子的发芽率变化。用154批储藏了1～10年的商品种子来做含水量、发芽率和活力实验。每批种子都放在0.5kg的2个密封罐中。这些种子都是从大批商品化后的种子中留下来的。根据储藏时间和种子含水量将所分析的样品种子分成不同的组:5.5%;5.5%～6.5%;6.5%～7.0%;7.0%～7.5%。对于发芽率最低为90%的洋葱种子来说,在密封包装、不超过7.5%含水量以及年平均温度在17.6一18.3℃条件下,实验可以得出如下结论:(l)当含水量增加、储藏时间延长时,生活力方程变得更不准确,但它可以应用在储藏时间在3年以内的种子生活力预测上。 (2)仅仅用发芽实验来确定的生理性品质不足以预测洋葱种子的储藏性能。 (3)一些洋葱种子可以被储藏10年而保持高的生理性品质,而有的则可能会在储藏2年后即丧失生理性品质。本研究可为储藏时间超过3年的洋葱种子的储藏寿命关系到可能的销售时间后的种子状况提供更多的信息。同时,我们也对Eills和Roberts(1980)提出的洋葱种生活力议程能否被用来预测在10年储藏期间变温条件下的发芽率变化进行了验证。 The purpose of this study was to determine the storage performance of sealed cans with low moisture content of onion seeds at ambient temperatures in Pelotas, Brazil; to verify whether the seed viability equations proposed by Ellis and Robert (1980) could be used to predict During storage in the warehouse, the germination rate of onion seeds varied under varying temperature conditions. 154 batches of commercial seeds stored for 1 to 10 years were used to make water content, germination rate and vitality experiments. Each batch of seeds are placed in 0.5kg 2 sealed cans. These seeds are all from a large number of commercialized seeds left behind. The samples analyzed were divided into different groups according to their storage time and seed moisture content: 5.5%; 5.5% -6.5%; 6.5% -7.0%; 7.0% -7.5%. For onion seeds with a germination rate as low as 90%, the following conclusions can be drawn from experiments on sealed packaging, no more than 7.5% moisture content, and annual average temperature at 17.6-18.3 ° C. (1) When water content is increased, When the storage time is prolonged, the viability equation becomes more inaccurate, but it can be applied to seed viability prediction with storage time within 3 years. (2) Physiological quality determined by germination experiment alone is not enough to predict the storage performance of onion seeds. (3) Some onion seeds can be stored for 10 years while maintaining high physiological quality, while others may lose their physiological quality after 2 years of storage. This study provides more information on the shelf life of onion seeds that have been in storage for more than three years, after the potential sale time. At the same time, we also examined whether the onion vitality agenda proposed by Eills and Roberts (1980) can be used to predict changes in germination rates under variable temperature conditions during 10 years of storage.