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北方广大寒冷地区由于冬季温度低,低温持续时间长,常使一些木本植物遭受冻害,因此,寒地木本植物育种工作中,抗寒性就居于首要地位;但杂种后代抗寒性的早期鉴定却是一项既繁重、技术性又要求很高的工作。国内外不少人根据植物细胞膜的伤害程度与细胞内电解质外渗量呈正相关的原理
Cold northern part of the cold due to the winter low temperature, low temperature for a long time, often make some woody plants suffer from frost damage, cold woody plant breeding work, cold resistance to live in the first place; but hybrid progenies cold early Identification is a cumbersome, technical and demanding work. Many people at home and abroad based on the degree of cell membrane damage and intracellular electrolyte leakage was positively correlated to the principle