Optimum moisture contents of seeds stored at ambient temperatures

文献类型： 外文期刊

第一作者： Chai, JF

作者： Chai, JF;Ma, RY;Li, LZ;Du, YY

作者机构：

关键词： seed longevity;seed storage;temperature;moisture content;open storage;germplasm;Glycine max;Triticum durum;Sesamum indicum;Linum usitatissimum;ultra-dry

期刊名称：SEED SCIENCE RESEARCH （ 影响因子：2.25； 五年影响因子：2.5 ）

ISSN： 0960-2585

年卷期： 1998 年 8 卷

页码：

收录情况： SCI

摘要： This research was conducted to determine the moisture contents that give maximum longevity to seeds stored at ambient temperatures in Shijiazhuang, China. Four or five cultivars of flax (Linum usitatissimum L.), sesame (Sesamum indicum L.), soybean (Glycine max Merr.) and durum wheat (Triticum durum Desf) seeds were dried to moisture contents between 0.5 and 11% (fwb), sealed in air-tight containers, and then stored for 4-5 years at temperatures fluctuating between 0 and 35 degrees C and averaging 18 degrees C. During storage, germination percentage declined from an initial value above 90% to as low as 0% depending on the species, cultivar and moisture content at storage. Storage at high water contents resulted in complete loss of viability within 4 years. Some drying improved the longevity of all samples, but drying to extremely low water contents resulted in reduced longevity of some cultivars of each species. The range of water contents that gave maximum survival varied between species from 7.6-9.7% for wheat to 1.8-2.5% for sesame. It is concluded that there is an optimum water content for seed storage and, for seeds with high oil contents, the value of the optimum is less than the benchmark 5% water content recommended for seed storage by the International Plant Genetic Resources Institute.

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