茶树花主要形态性状和生化成分的多样性分析

对茶树花主要形态性状和生化成分的多样性进行了分析,结果表明,茶树花性状品种内表现稳定,品种间变异幅度大,中国栽培品种的多样性比日本栽培品种丰富。茶树花百花重的变异度大,多样性更加丰富。茶树花的生化成分含量也呈现丰富的多样性,茶树花的水浸出物含量为(53.78%±4.57%),茶多酚含量为(10.78%±2.25%),游离氨基酸含量为(2.60%±0.51%),咖啡碱含量为(1.42%±0.22%),水溶性糖含量为(3.80%±1.07%),水浸出物和咖啡碱含量的变异系数较小,水溶性糖和茶多酚含量的变异系数较大。与茶鲜叶比较,茶树花的水浸出物含量和含水率较高,水溶性糖含量略高于鲜叶,游离氨基酸含量与鲜叶相当,咖啡碱含量低于鲜叶,茶多酚含量明显低于鲜叶。

Diversity analysis of the main morphological traits of tea plant flower and its biochemical components

The diversity of the main morphological traits of tea plant flower and its biochemical components were analyzed.The results showed that the morphological traits of tea plant flower keep relatively stable in one tea variety and have a large aberrance between different tea varieties,and its diversity in Chinese tea cultivar was more abundant than that in Japanese tea cultivar.When the variability of weight of 100 tea flowers was high its diversity was abundant.The content of biochemical components in tea plant flower also had an abundant diversity.The content of water extract was(53.78%±4.57%),tea polyphenols(10.78%±2.25%),free amino acid(2.60%±0.51%),caffeine(1.42%±0.22%),soluble carbohydrates(3.80%±(1.07%).) The aberrance coefficient of the content of water extract and caffeine in tea plant flower was lower,while that of soluble carbohydrates and tea polyphenols was higher.Compared with tea fresh leaves,the content of water extract and water percentage in tea plant flower was higher,and the content of soluble carbohydrates was a little higher than that in tea fresh leaves.The content of free amino acid was equivalent to that in tea fresh leaves.The content of caffeine in tea plant flower was lower than that in tea fresh leaves.The content of tea polyphenols was much lower than that in tea fresh leaves.