| Kraft Tea Germplasm Resources in Gulin is an important component part of the important wild tea resources in sichuan.The origin of Gulin County in Sichuan field survey of the main distribution area of wild tea tree, and to observe its morphological characters, such as tree,leaf and flowers and fruits. On this basis,Filtering out a wide distribution, a larger number of external morphological characteristics of representative wild tea trees.This paper selected eight representative different types (numbered I-Class to Ⅷ-Class) of Kraft tea plants for studying by the first principal component analysis greatest contribution as ovary hairy and style split, the second as the number of the tree and the tip, and vein logarithmic, serrated. Observation of the various traits of the the Gulin Kraft tea from the morphological, leaf anatomical structure, main biochemical composition, tea quality and other aspects of the system.(1)This article observed the most of the tea and determinat botanical and biological characteristics. The results showed that:Wild plants of Gulin Kraft Tea tea mainly distributed in the natural communities of E105°48.070’～E105°48.268’; N28°0.560’ ～N28°0.490’,above sea level of 826～934 m.The results showed that those accessions had the rich diversity in morphological characters, genetic and quality traits. Most tea plants belong to shrub with semi-erect tree pose, have green Shoots with moderate pubescence, elliptic Leaves with its apex acuminate, middle sized flower with style of 3-4 cracks, spherical and reniform fruit with spherical seed. Most of them show cultivated tea characters.It is preliminarily concluded that they belong to C. gymnogyna Chang and C. sinensis var. sinensis in classification systems of Chen Liang and Yu Fu-lian by tree, tip, ovary hairy, leaves and other anatomical structure evolution path. There had an evolution from the wild-type of class-V and class-VI to other classes of cultivation model and owed a large number of transition.(2) The major biochemical components were determined. The results of biochemical composition and sensory evaluation data in 2013 and 2014 showed that:To different types of GuLin Kraft Tea are rich of biochemical compositions, polyphenol content arranges at 18.71%±0.39%～35.83%±0.45%, free amino acids arranges at2.03%±0.07%-5.08%± 0.12%, caffeine content arranges at 3.11%±0.11%～5.17%±0.06%, water extract content arranges at36.33%±1.19%-48.43%±2.62%, total catechins arranges at95.28±3.68-216.72 ±2.88mg/g. The ratios of tea polyphenols and amino acid arranges at3.68±0.14-16.13± 0.64. There are some specific resources with breeding value in the germplasm resources of the Gulin kraft tea. With high tea polyphenols (35.83%), high caffeine(5.17%)and high catechin (207.27mg/g), the tea plants of Class-Ⅴ,is preliminary determined as resources of specific breeding materials.The plants of Class-Ⅱ with high amino acid (5.08%) breeding materials, further screening of specific individuals from in the plants of the Class-V and the Class-Ⅱ, to dig for breeding and specific good genes. It can be inferred from the content of theanine and phenylalanine, total catechins and catechins components that Class-VI is relatively more primitive type, the Class-Ⅱ is closer to the cultivative type among 8 types of GuLin kraft Tea plants.(3) Sensory evaluation of baked green Green Tea made of various types of tea plants, the results show that the quality of baked green tea was evaluated. The green Tea is made by Class-Ⅱ tea fresh leaves, its shape is tight and tender significantly cents, The tea soup color is bright green, strong chestnut aroma, mellow and delicious taste, best quality. It can be deduced that Class-Ⅴ was appropriate system of black tea and the Class-Ⅱ is suitable for green tea according to the contents of major biochemical components and polyphenol/a-mino acids ratio and catechin components etc. According to the high quality characteristics of the Class-Ⅴ and the Class-Ⅱ tea resources, we can put it into specific Black Tea and famous Green Tea, to improve the economic benefits of Gulin kraft tea.(4) According to leaf anatomy, integrated SR%, CTR%, cold resistance index analysis, the potential productivity and resistance of the Class-Ⅵ tea plants is highest, screening of high yield and high breeding material from it. The Class-Ⅵ tea plants is relatively high in production and resistance.Combined with the spring shoot phenology and the main biochemical components can be inferred, Screening of high yield and good quality Black Tea lines from the Class-Ⅵ and the Class-Ⅲ is screened high yield, high quality, early adorable Green Tea lines. |
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