西北寒旱区不同草莓品种育苗适应性综合评价

Comprehensive Evaluation of Strawberry Seedling Adaptability in Different Varieties in the Northwest Cold and Drought Region

以24个草莓品种为试材,采用主成分分析和聚类分析方法,研究了不同草莓品种在西北寒旱区的种苗繁育能力及种苗质量情况,以期为当地草莓产业的可持续发展提供参考依据。结果表明:对14项农艺性状进行相关性分析,各性状至少与其他1个性状存在极显著或显著相关。经基于3个主成分因子构建的定量函数模型计算,10(“天使AE”)、3(“天仙醉”)、23(“红颜”)、5(“雪兔”)、8(“丽雪”)5个品种综合得分最高。利用聚类热图对不同品种进行系统分类,24个品种依据14个性状指标聚成3类,其中10(“天使AE”)、3(“天仙醉”)、8(“丽雪”)聚为1类,表现为种苗质量好、繁苗量适中,该结果与田间生长情况基本一致。综合分析表明,10(“天使AE”)、3(“天仙醉”)、8(“丽雪”)最适宜在西北寒旱区进行育苗,是适宜推广并具有应用潜力的品种。

Taking 24 strawberry varieties as test materials,principal component analysis and cluster analysis methods were used to analyze the seedling quality and breeding ability of different varieties in the northwest cold and drought region,in order to provide reference for sustainable development of the local strawberry industry.The results showed that each trait was extremely significantly correlated with at least one other trait by the correlation analysis of 14 agronomic traits.The comprehensive scores of 10(‘Angel AE’),3(‘Tianxianzui’),23(‘Hongyan’),5(‘Xuetu’)and 8(‘Lixue’)were the highest with quantitative function model based on three principal component factors calculated.Cluster heat map was used to systematically classified in varieties,the 24 varieties were clustered into 3 categories according to 14 traits,10(‘Angel AE’),3(‘Tianxianzui’)and 8(‘Lixue’)could be classified into 1 group whose seedling qualities were excellent and their seedling quantities were moderate.The results were similar to those of the field observation.The synthetically analysis showed that 10(‘Angel AE’),3(‘Tianxianzui’)and 8(‘Lixue’)were the most suitable for seedling rasing,popularization and had potential application in the northwest cold and drought region.