通常,人们在低温、干燥的环境条件下保存植物种子。例如,把水稻或小麦的种子保存在通风干燥的种子库中,有条件的地方,种子库中配有制冷设备。但是,有一类种子不能忍受过分的低温和干燥,种子专家称之为“顽拗型”种子。这类种子为什么被称为“顽拗型”种子呢?原来, Often, plant seeds are preserved in cold, dry ambient conditions. For example, keep rice or wheat seeds in a well-ventilated and dry seed bank where conditions permit. Refrigeration equipment is installed in the seed bank. However, there is a class of seeds that can not tolerate excessively low temperatures and dryness, which seed experts call “recalcitrant” seeds. Why are these seeds called “recalcitrant” seeds? Originally,