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以洛阳农林科学院杏属种质资源圃内4年生的4个仁用杏品种(系)(“中仁一号”‘B5’“优1”“龙王帽”)为试材,采用室内测定的方法,测定并比较了植株一年生枝条韧皮部的抗寒性指标,并利用主成分分析法对4个仁用杏品种(系)的抗寒性指标进行分析,以期筛选抗寒性强的仁用杏育种杂交亲本。结果表明:4个仁用杏品种(系)综合抗寒性由强到弱排列顺序是“中仁一号”>“优1”>“龙王帽”>‘B5’。“中仁一号”综合抗寒性最强,可以作为抗寒性强的育种材料;“优1”的综合抗寒性次之,可作为抗寒性较强的育种材料;“龙王帽”抗寒性一般,不作为抗寒性育种材料推荐;‘B5’在可溶性糖含量、可溶性蛋白质含量及POD活性3个抗寒性指标上有突出的表现,可根据需要进行筛选性选择。
Taking the 4-year-old apricot varieties (lines) (“Zhongren No.1”, “B5”, “You1”, “Longwangmai” The cold tolerance indexes of annual phloem of annual branches were measured and compared by using the method of indoor determination. The cold resistance indexes of four apricot varieties (lines) were analyzed by principal component analysis, Sexual apricot breeding cross parent. The results showed that the order of comprehensive cold resistance of four cultivars of apricots was “Zhongren No. 1”, “You 1”, “Longwangmao”, “B5”. “Zhongren One ” has the most comprehensive cold resistance, which can be used as breeding material with strong cold resistance; the comprehensive cold resistance of “You 1” is the second, which can be used as the breeding material with strong cold resistance; “Longwangmao ” cold resistance is not recommended as cold hardiness breeding material; ’B5’ has outstanding performance on three cold resistance indexes of soluble sugar content, soluble protein content and POD activity, and can be carried out as needed Screening options.