超低水分贮藏对几种高油分种子生活力的影响

Effects of ultra-low moisture content in storage on viability of some lipid-rich seeds

试验应用氧化钙、氯化钙、硅胶为干燥剂,以不同剂量分别干燥油菜、萝卜、黑芝麻、白芝麻种子,研究超低水分贮藏对高油分种子生活力的影响。结果表明,干燥剂种类和剂量对种子失水速度有明显影响,用氧化钙或氯化钙干燥,种子失水速度较用硅胶干燥为快;干燥剂剂量愈大,种子失水速度愈快。干燥至低水分和超低水分的4种种子在常温下贮藏6～11个月,种子生活力和活力无显著变化;油菜种子水分低至0.2%,萝卜低至0.3%,黑芝麻、白芝麻低至0.6%,均未发现干燥伤害和吸胀损伤。经50℃高温老化14天后,油菜种子水分为0.7%～3.5%、萝卜为0.6%～3.5%,黑芝麻为0.6%～3.5%、白芝麻为0.7%～3.9%,能保持较高的生活力和活力。4种高油分种子耐干性均极强,采用超低水分贮藏可大大延长种子寿命。

This paper deals with the effects of ultra-low moisture content in storage on viability of some lipid-rich seeds of rape (Brassica napus L.), radish (Raphanus sativus L.) blackcoat sesame (Sesanum indicum L.) and whitecoat sesame (S. Indlcum L.) desiccated by three kinds of desiccants(calcium oxide, calcium chloride and silica gel)with different dosage. It was observed that the dehydration rate was controlled by the type and dosage of dessicants. The dehydration rate of seeds desiccated by calcium oxide or ...