重庆老鹰茶种质资源调查与评价  

Investigation and evaluation of Litsea coreana germplasm resources in Chongqing

作　　者：戴前莉[1] 朱恒星[1] 卢敏 黄飞逸 陈本文[1] 陈琴 尹思琴 祝元春 DAI Qianli;ZHU Hengxing;LU Min;HUANG Feiyi;CHEN Benwen;CHEN Qin;YIN Siqin;ZHU Yuanchun(Chongqing Academy of Forestry, Chongqing 400036, China;Chongqing Shapingba District Agricultural Technology Service Center, Chongqing 400030, China;Chongqing Banan District Qiaokouba Forestry Station, Chongqing 401320, China;Chongqing Hanye Landscape Engineering Co. , Ltd. , Chongqing 400036, China)

机构地区：[1]重庆市林业科学研究院,重庆400036 [2]重庆市沙坪坝区农业技术服务中心,重庆400030 [3]重庆市巴南区桥口坝林场,重庆401320 [4]重庆瀚业园林工程有限公司,重庆400036

出　　处：《浙江农业学报》2022年第3期447-456,共10页Acta Agriculturae Zhejiangensis

基　　金：重庆市技术创新与应用发展专项(cstc2019jscx-msxmX0409)。

摘　　要：为客观准确评价重庆市老鹰茶种质资源情况,调查了123份老鹰茶种质资源的生长势、芽叶颜色、发芽密度等形态指标,对其中27份种质的水浸出物、茶多酚、总黄酮、游离氨基酸和可溶性糖等生化成分含量进行分析,并利用等级评分法和因子分析法对老鹰茶种质资源进行综合评价。结果表明:27份种质的平均水浸出物含量为29.25%,WX18的水浸出物含量最高,达37.10%,WL32最低,为22.60%;平均茶多酚含量为11.25%,WX4茶多酚含量最高,为14.07%,NC2最低,为9.87%;平均总黄酮含量为1.65%,WX22总黄酮含量最高,为2.66%,NC9最低,为1.03%;平均游离氨基酸含量为0.98%,WX12游离氨基酸含量最高,为1.40%,WX22最低,为0.73%;平均可溶性糖含量为4.73%,WX18含量最高,为6.35%,WL30最低,为3.06%。不同老鹰茶种质资源水浸出物、茶多酚、总黄酮、游离氨基酸、可溶性糖含量存在差异,可作为种质资源评价的初选指标。综合评价排名前5的依次为WX18、WX22、WX20、WL40、WX21。WX18和WX22可作为紫红色新芽种质,WX20和WX21可作为粉色新芽种质,WL40可作为黄绿色新芽种质。To objectively evaluate germplasm resources of Litsea coreana in Chongqing,morphological indexes of 123 germplasm resources were investigated.27 germplasm resources were selected to determine the water extract,tea phoyphenol,total flavonoid,free amino acid and soluble sugar contents.The ranking of biochemical indexes assessment for different germplasm resources was determined by grade and factor evaluating methods.Among these germplasm resources,the average content of water extract was 29.25%,while the maximum was 37.10%(WX18)and the minimum was 22.60%(WL32).The average content of tea phoyphenol was 11.25%,while the maximum was 14.07%(WX4)and the minimum was 9.87%(NC2).The average content of total flavonoid was 1.65%,while the maximum was 2.66%(WX22)and the minimum was 1.03%(NC9).The average content of free amino acid was 0.98%,while the maximum was 1.40%(WX12)and the minimum was 0.73%(WX22).The average content of soluble sugar was 4.73%,while the maximum was 6.35%(WX18)and the minimum was 3.06%(WL30).There were differences in contents of water extract,tea phoyphenol,total flavonoid,free amino acid and soluble sugar among the fresh leaves from different Litsea coreana germplasm resources.These biochemical indexes could be used as indicators for the preliminary evaluation of the germplasm resources.WX18,WX22,WX20,WL40 and WX21 were the top 5 in overall ranking,they were considered as elite germplasm resources.WX18 and WX22 could be used as red-purple bud germplasm resources,WX20 and WX21 could be used as pink bud germplasm resources,and WL40 could be used as new yellow-green bud germplasm.

关 键 词：老鹰茶 种质资源 生化成分 形态指标 

分 类 号：S571.1[农业科学—茶叶生产加工]