论文部分内容阅读
采用电感耦合等离子体原子发射光谱法(ICP-AES)对38份大叶茶种质资源绿茶样和21份大叶种普通绿茶11种矿质元素(S,P,K,Ca,Mg,Fe,Zn,Mn,Na,Ni,Cu)进行了比较分析,相对标准偏差在1.56%～7.25%之间,方法简便可靠。结果显示:种质资源中S,P,Zn,Mn,Na,Ni的平均含量均低于普通绿茶,而K,Ca,Fe,Cu平均含量均高于普通绿茶;种质资源11种元素含量的变异系数在9.7%～48.9%之间,反映了茶树种质资源矿质元素多样性高;基于矿质元素的主成分聚类分析,可以清楚地将茶树种质资源分为野生型和栽培型两类。研究结果为茶树种质资源的化学分类,资源种质鉴别,新品种选育提供有益的参考。
Thirty-eight mineral elements (S, P, K, Ca, Mg, Fe, Zn, Mn, Na, Ni and Cu), the relative standard deviations are between 1.56% and 7.25%, and the method is simple and reliable. The results showed that the average content of S, P, Zn, Mn, Na and Ni in germplasm was lower than that of common green tea, but the average content of K, Ca, Fe and Cu was higher than that of common green tea. The coefficient of variation was between 9.7% and 48.9%, which reflected the high diversity of mineral elements in tea germplasm resources. Based on the principal component analysis of mineral elements, the germplasm resources of tea tree could be clearly divided into two types: wild type and cultivated type class. The results provide useful references for the chemical classification of tea germplasm resources, the identification of resource germplasm and the selection of new varieties.