Water sorption properties in Coffea spp. seeds andABOVING
embryos
期刊名称： Seed Science Research
作者： Eira, Mirian T.S., Walters, Christina, Caldas, Linda S.树的同构
年份： 1999年
期号： 第04期
享受生命中的惊喜关键词： Coffea; coffee; desiccation tolerance; embryo; equilibrium; germplasm;
glass; orthodox; recalcitrant; relative humidity; seed; seed storage; temperature;
water content; water sorption isotherms
摘要：The relationships among water content, relative humidity and temperature were documented in
both seeds and excised embryos ofCoffeaspp. using water sorption isotherms. Isotherms were constructed at 5, 15 and 25°C and calculated for lower temperatures. There were no apparent differences in sorption characteristics among whole seeds of several cultivars ofC. arabicaand among different species ofCoffea. Excised embryos of genetically diverseCoffeagermplasm also exhibited similar sorption characteristics, though there were substantial differences observed between embryos and whole seeds. The shape of isotherms桅杆风>cri>楔形体
of coffee seed tissues was intermediate to the reverse sigmoidal shape observed
for orthodox seeds and the monotonic shape observed for desiccation intolerant plant tissues. The heats of sorption calculated for RH ≤ 25%
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