基于主成分分析的不同茶树品种在湖北地区的适应性评价

为客观准确地评价19个茶树品种在湖北地区的适应性。本研究以‘福鼎大白茶’（CK）为对照,对19个茶树品种在湖北地区的茶苗成活率、新梢物候期、产量性状、制茶品质和抗逆性等指标进行系统比较分析,并应用主成分分析法对不同茶树品种在湖北地区的适应性进行综合评价。结果表明,在主成分分析时前3个主成分的累积方差贡献率达到76.96%,分别为“产量抗性因子”“物候期因子”“品质因子”;以前3个主成分的线性回归方程和贡献率构建适应性综合评价模型,综合得分超过CK的有10个品种,其中‘茶农98’‘鄂茶12’‘陕茶1号’和‘岚里香’4个品种的综合评价得分明显高于其他品种,为最适宜湖北及相似茶区推广应用品种;综合得分低于CK的有9个品种,其中‘白叶一号’‘中黄1号’‘漕溪1号’和‘鸟王106’4个品种的综合得分明显低于其他品种,为不适宜湖北及相似茶区推广应用品种。

Evaluation of Adaptability of Different Tea Cultivars in Hubei Based on Principal Components Analysis

To accurately evaluate the adaptability of 19 tea cultivars in Hubei Province. In this study, the major agronomic traits such as survival rate, phenological phase, yield traits, ensory quality, and stress resistance were systematically analyzed by comparison with ‘Fudingdabaicha’ (CK), and the adaptability of different tea cultivars in Hubei Province was comprehensively evaluated by principal component analysis. Three principal components including yield - resistance factor, phenological phase factor and quality factor were determined, and the cumulative variance contribution rate was 76.96%. The composite scores of ten cultivars were higher than that of CK, of which ‘Chanong 98’, ‘Echa12’, ‘Shancha1’, and ‘Lanlixiang’ were the most suitable application area in Hubei or similar areas. The composite scores of nine cultivars were lower than that of CK, of which ‘Baiye1’, ‘Zhonghuang1’, ‘Caoxi1’, and ‘Niaowang106’ were not the appropriate application area in Hubei or similar areas.