Cold hardening ( cold acclimation ) processes taking place in plants before the onset of winter that prepare them to withstand low temperatures 低温锻炼（低温驯化） ：在冬季来临之前植物体内发生的一些生理变化，目的是为了经受即将来临的低温。
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Accumulation of 28 . 7 - kda dehydrin began to be detectable after 3 days of cold acclimation . then the level of the dehydrin increased and reached to the maximum at the seventh day 低温驯化3天开始检测到28 . 7kda脱水蛋白的积累，随后其含量逐渐增加，驯化7天时含量最高。
