Yunkang 10

Yunkang 10 (Camellia sinensis var. assamica). Ministry of Agriculture and Tea Research Institute, Chinese Academy of Agricultural Sciences. 1990. Collection on the improved tea varieties in China. p.100-101. Chen Liang et al. 2024. Records of Tea Cultivars and Resources of Chinese Tea resources (Volume I)-Registered Tea Cultivars. p.592-593: [Applicant] Tea Research Institute of Yunnan Academy of Agricultural Sciences. [Breeder] Wang Haisi; Du Xuan; Dynasty Ji; Li Guangtao; Zhu Fengming; Liang Mingzhi; Tian Yiping; Xu Pizhong; Deng Shaochun; Chen Chunlin; Chen Linbo; Bao Yunxiu. [Variety Number] Non-major Crop Variety Registration No. GPD Tea Tree (2020)530006. formerly recognized by National Crop Variety Validation Committee No. GS13050-1987, Yunnan Crop Variety Validation Committee No. Yunnan Tea No. 1. [Variety origin] Selected and bred by Tea Research Institute of Yunnan Academy of Agricultural Sciences from Menghai 'Nannuoshan Dayecha'. [Characteristics] The plant is tall, open and sparsely branched. The leaf blade is upwardly bearing, the green degree of the leaf blade is medium, narrow oval, the leaf quality is medium, the leaf veins are 9-14 pairs, the leaf body is slightly inwardly folded, and the leaf teeth are coarse and shallow. The buds and leaves are relatively fat, the new growth is fast, and the germination force is strong. In the Menghai area, the buds and leaves are in full bloom in the middle of March, and the buds and leaves are yellowish-green in color and hairy. The full bloom period is in the middle and early September, the size of the corolla is 4.3cmx4.5cm, the petals are 5-8, white in color, medium in texture and velvet; the length of the style is 1.14cm, the stigma is 3-lobed, the cleavage is shallow, and the relative heights of the pistil and the stamen are low; the length of the pedicel is 1.0cm, and the number of calyxes is 5, green, and velvety. Fruitfulness is moderate. The biochemical sample of one bud and two leaves in spring contains 25.0% of tea polyphenols, 2.9% of amino acids, 4.4% of caffeine, and 49.8% of water leachate. Suitable for black tea, green tea and pu-erh tea. For black tea, the aroma is high and long-lasting, and the flavor is strong and fresh; for green tea, the aroma is long-lasting and the flavor is strong and fresh; for Puerh tea, the aroma is clear and strong, and the flavor is mellow; for Puerh ripe tea, the aroma is mellow and mellow, and the flavor is mellow and strong. The first growth cycle mu yield 87 kg of dry tea, 13% higher than the control 'big black tea'; the second growth cycle mu yield 160 kg of dry tea, 20% higher than the control 'big black tea'. Resistant to tea cloudy leaf blight, moderate resistance to tea cake disease, resistant to tea small green leafhopper. In Yunnan tea area cold resistance, drought resistance, cuttings propagation survival rate is high. [Suitable for planting area and cultivation technology] Suitable for planting in the tea area of Yunnan with extreme minimum temperature of -5C˚ and sufficient rainfall in summer. Before planting, apply sufficient fertilizer; after transplanting, strictly 3-4 times of stereotyped pruning. Because of the fast growth of the new growth, it needs to be picked according to the standard in time and in batches for many times, timely, partial tender picking, to ensure the yield and quality of tea.

云抗10号 (Camellia sinensis var. assamica ‘Yunkang 10’). 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》100-101页。杨亚军，梁月荣. 2014. 《中国无性系茶树品种志》40页华茶50号。陈亮等. 2024.《中国茶树品种资源志（上卷）茶树登记品种》第592-593页：【申请者】云南省农业科学院茶叶研究所。【育种者】王海思；杜煊；王朝纪；李光涛；朱凤铭；梁名志；田易萍；徐丕忠；邓少春；陈春林；陈林波；包云秀。【品种编号】非主要农作物品种登记号：GPD茶树（2020)530006。原全国农作物品种审定委员会认定编号：GS13050-1987，云南省农作物品种审定委员会审定编号：滇茶一号。【品种来源】云南省农业科学院茶叶研究所从勐海‘南糯山大叶茶’中单株选育而成。【特征特性】植株高大，树姿开张，分枝稀。叶片向上着生，叶片绿色程度中，窄椭圆形，叶质中，叶脉9-14对，叶身稍内折，叶齿粗浅。芽叶较肥壮，新梢生长快，育芽力强，在勐海地区一芽三叶盛期在3月上中旬，芽叶色泽黄绿色、茸毛多。盛花期在9月中上旬，花冠大小为4.3厘米x4.5厘米，花瓣5-8枚、色泽白色、质地中、有茸毛；花柱长度为1.14厘米，柱头3裂、裂位浅，雌蕊和雄蕊相对高度为低；花梗长1.0厘米，花萼数5个、绿色、有茸毛。结实能力中等。春季一芽二叶生化样含茶多酚25.0%,氨基酸2.9%，咖啡碱4.4%，水浸出物49.8%。适制红茶、绿茶和普洱茶。制红茶，香高持久，滋味浓强鲜；制绿茶，花香持久，滋味浓厚鲜爽；制普洱生茶，香气清香浓郁，滋味醇正；制普洱熟茶，香气醇正、陈香，滋味醇厚。第一生长周期亩产干茶87千克，比对照‘大黑茶’增产13%；第二生长周期亩产干茶160千克，比对照‘大黑茶’增产20%。抗茶云纹叶枯病、中抗茶饼病、抗茶小绿叶蝉。在云南茶区抗寒性强、抗旱性较强，扦插繁殖成活率高。【适宜种植区域及栽培技术要点】适宜在云南极端最低温度-5C˚茶区、夏季雨水充足的时间种植。种植前施足底肥；移栽后严格3-4次定型修剪。因新梢生长快，需要按标准及时分批多次采摘，及时、偏嫩采，保证茶叶的产量与质量。