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在果树抗寒育种和引种工作中,为确定子代或所引材料的抗寒力,育种工作者常需耗费10几年的时间,调查其自然越冬期间的冻害表现,尤其是调查酷寒年份的冻害表现,而酷寒年份一般10年左右才出现一次。因此,如何缩短调查年限,早期预测果树抗寒力,早已成为人们研究的课题。
In the cold hardiness breeding and introduction work of fruit trees, breeders often spend more than 10 years in determining the cold hardiness of offspring or introduced materials, and investigating their natural frost damage performance during wintering, especially in the investigation of the cold years Frost damage performance, while the cold years generally appear only once in about 10 years. Therefore, how to shorten the survey period, early prediction of cold hardiness of fruit trees, has long been the subject of research.