65份叶色紫化茶树种质资源生化成分分析

对65份叶色紫化茶树资源春梢内含生化成分与芽叶色差进行检测。结果表明:65份种质资源中茶多酚含量30%~40%的资源占80%,咖啡碱含量3%~4.5%的资源占86%,氨基酸含量5%~7%的资源占22%,酚氨比低于8的资源有20份,酚氨比高于15的有7份;ZY-4的叶绿素a、叶绿素b、叶绿素总量和类胡萝卜素含量最高;可溶性糖含量≥6%的紫芽资源有11个,其中含量最高的是ZY-8;春季花青素含量变幅为1.65~15.56 mg/g,夏季的花青素含量变幅为3.21~35.57 mg/g;紫芽新品系中明亮度L值和测色值b与花青素含量有密切关系,而花青素含量与叶绿素含量有密切关系,与各生化成分之间没有显著性相关。

Analysis of Biochemical Components of 65 Tea Germplasm Resources with Purple Leaf Color

The main biochemical components and color difference of buds and leaves of 65 tea germplasm resources with purple leaf color in spring were detected.The results showed that 80%of the 65 germplasms resources with 30%~40%tea polyphenols content,86%of the resources with 3%~4.5%caffeine content,and 22%of the resources with 5%~7%amino acid content,20 resources with phenol ammonia ratio less than 8,and 7 with phenol ammonia ratio higher than 15;ZY-4 had the highest contents of chlorophyll a,chlorophyll b,total chlorophyll and carotenoid;11 purple bud resources with soluble sugar content higher than 6%,among them,zy-8 has the highest content;the anthocyanin content ranged from 1.65~15.56 mg/g in spring and 3.21~35.57 mg/g in summer;the brightness value L and color measurement value b of new tea varieties with purple buds were closely related to anthocyanin content,while anthocyanin content was closely related to chlorophyll content,and there was no significant correlation among the biochemical components.