Shuyong 2

Ministry of Agriculture and Tea Research Institute, Chinese Academy of Agricultural Sciences. 1990. Collection on the improved tea varieties in China. p.96-97.

GSCT48 (Shuyong 2) Alternative name: 103. New clonal variety. Small arbor type. Large-leaf size. Medium sprouting.

         It was selected individually from the progenies of artificial hybridization between the Sichuan Zongye variety (female) and Yunnan Daye variety ( male) in 1963~1983 by Tea Research Institute, Sichuan Academy of Agricultural Sciences. Now it has been popularized in the tea area manufacturing the black tea in Sichuan provinae. It was also introduced in a limited area in the provinces of Hunan, Gnangxi and Guizhou.

         Plant high. Rather erect in shape with higher branching position as well as average and compact branching density, Leaves incline upwards and inflexing. Length of leaves 11.7~12.8 cm. width 5.3~5,6cm. Oblong in shape. The surface of leaves protruding. Thick and soft in texture. Green in color and glossy. With waved margin and acuminate tips. 8%10 pairs of vein, with deep serrations. The sprouting period in spring season of GSCT48 variety is 12 days later than the plucking period of Fudian Dabaicha. With aversge sprouting density and vigorous sprouting abiliy. Shoots stout, yellow green in color, with potent tenderness-keeping ability, the weight of 100 one bud and three leaves shoots averaged 124 g. The flowering period is rather late. With less flowering amount and bearing percentage. Higher resistance to yellow mite. The cold-hardiness is higher than that of Yunnan Daye variety. With high survival rate during cutting propagation.

        High yielding. According to the varietial experiment, the yield of made tea in a 3~6 years old tea garden averaged 289 kg per mu. and 126.04% higher than that Of Fudian Dabaicha.

         According to the analysis conducted by Tea Research Institute, Sichuan Academy of Agricultural Sciences, the contents of caffeine in the one bud and two leaves shoots averaged 3.77%, tea polyphenols 33.57% and total catechins 170.63 mg/g. The broken black tea prepared with the GSCT48 variety as the raw material is characterized by its fragrant and lasting aroma, bright reddish liquor and infused leaf, strong, full and refreshing taste, is comparable with the Yunnan Daye variety introduced to the Sichuan Basin, and is better than the standard of exported black tea manufactured by small-leaf Variety-

         Suitable to popularize in the tea area in southwestern, southern part of China and the south-of-Yangzte River for the manufacture of black tea and green tea.

        Owing to the erect shape and potent terminal growth, rate, it is recommended to plant denser and increase the times of pruning.

农业部农业司，中国农业科学院茶叶研究所. 1990. 《中国茶树优良品种集》96-97页。华茶48号，蜀永2号。

杨亚军，梁月荣. 2014. 《中国无性系茶树品种志》38页: 蜀永2号

【产地与分布】由重庆市农业科学院茶叶研究所于1963~1985年以四川中小叶种为母本、云南大叶茶为父本，采用杂交育种法育成。四川、重庆有栽培。1987年通过全国农作物品种审定委员会认定，编号GS13048-1987。

【形态特征】 植株高大，树姿较直立，分枝密度中。叶片呈上斜状着生，长椭圆形，叶色绿，富光泽，叶面隆起，叶身内折，叶缘波状，叶尖渐尖，叶齿中，叶质柔软。花冠直径2.2cm,萼片5枚、有毛，花瓣白色、5〜8瓣，子房茸毛中等，花柱3浅裂。结实性中等，种子百粒重164.1g，种径1.7cm。

【特性】 2010年在重庆永川茶叶科学研究所试验基地观测，一芽二叶期出现在3月4日，比福鼎大白茶晚2天。新梢粗壮，芽叶生育力強，黄緑色，茸毛较多，一芽三叶百芽重108.0g。2010年和2012年在重庆永川取样，春茶一芽二叶干样约含茶多酚20.5%、氨基酸3.2%、咖啡碱4.1%、水浸出物47.4%。产量高，3〜5龄茶树的茶园平均每667㎡产干茶385.4kg。适制红茶，品质优良。制红碎茶，香气高长，滋味浓强，汤色红艳。抗寒性強。

【适栽地区】西南、华南及江南部分红茶茶区。

【栽培要点】宜适当密植和增加修剪次数。