银杏栽培品种种子性状的变异及主成分分析

Character Variation and Principal Component Analysis of Ginkgo Cultivar Seeds

[目的]全面而准确地反映银杏品种的分类特点。[方法]考察11个反映银杏种子性状的指标,利用主成分分析法,确定主成分个数,建立主成分方程,由此确定各品种的重要性状指标。[结果]运用主成分分析方法将银杏种子性状转化为3个独立的指标,降低银杏品种性状分析的难度。同时,由于综合的信息量大,增加分析的可靠性和稳定性。[结论]该研究可为银杏核用品种分类和育种提供参考。

[ Objective ] The study aimed to overall and accurately reflect the classification characteristics of ginkgo cultivars. [ Method ] The principal component number was ascertained and the principal component equation was established through investigating 11 indices reflecting ginkgo seed characters by principal component analysis method, on which the important character indices of ginkgo cultivars were confmned. [ Result ] The ginkgo seed characters were transformed into 3 independent indices by applying principal component analysis method to lower the difficulty of character analysis of ginkgo cultivars and increase reliability and stability of the analysis due to a lot of synthetic information. [Conclusion] The research could provide references for classification and breeding of nut-used ginkgo cultivars.