Yuncha 37

Yuncha 37 (Camellia sinensis var. assamica). Chen Liang et al. 2024. Records of Tea Cultivars and Resources of Chinese Tea resources (Volume I)-Registered Tea Cultivars. p.610-611. [Applicant] Tea Research Institute of Yunnan Academy of Agricultural Sciences. Breeder: Tian Yiping; Chen Chunlin; Deng Shaochun; Xu Yan; Liu Yue; Chen Linbo; Zhao Caimei; Sun Chao; Ye Shuang; Xu Pizhong. [Variety Number]: Non-major Crop Variety Registration Number: GPD Tea Tree (2024)530038. former Yunnan Crop Variety Validation Number: Yunnan Tea No. 9, formerly known as 'Yunnan Resistance No. 37'. [Variety Source]: Selected by Tea Research Institute of Yunnan Academy of Agricultural Sciences from Yunnan Shuangjiang 'Menghu Big Leaf'. [Characteristics]: Tree-type, large-leafed, medium-growing species. Tree posture is open, growth potential is strong, branching site is high, branching is sparse. The leaf blade is upwardly inserted, moderately elliptic, 13.4 centimeters long, 5.1 centimeters wide, yellowish-green in color, with a sharp apex. In the Menghai area, the exploitation period is generally in late March, and the full bloom period of one bud and two leaves is generally in the middle of March; the germination density is medium, with a lot of velvet; the length of one bud and three leaves is 7.6 centimeters, and the weight of one bud and three leaves in one hundred buds is 102.0 grams. Flowering period is in the middle of September every year; the size of corolla is 3.2 cm x 3.6 cm, the length of pedicel is 0.7 cm, the calyx is 5, green, velvet; petals are 7, white in color, medium in texture, velvet; the length of style is 1.4 cm, the stigma is 3-lobed, shallowly lobed, and the relative heights of pistil and stamen are equal. The biochemical sample of one bud and two leaves of spring tea contains 33.5% of tea polyphenols, 2.6% of amino acids, 5.0% of caffeine, and 49.8% of water leachate, which is suitable for the production of black tea and Pu-erh tea. For black tea, the aroma is high and sweet, and there are varieties of fragrance, and the flavor is stronger and fresher. For Puerh raw tea, the aroma is fresh and strong, and the flavor is mellow and sweet; for Puerh ripe tea, the aroma is sweeter, and the flavor is sweet and thick. The first growth cycle mu yield of fresh leaves of one bud and two leaves is 665 kg, 4% higher than the control 'Big Black Tea'; the second growth cycle mu yield is 702 kg, 5% higher than the control 'Big Black Tea'. It is resistant to anthracnose and cloudy leaf blight, moderately resistant to tea cake disease, resistant to small green leafhopper and coffee mite, moderately resistant to thrips, and has strong cold and drought resistance. [Suitable for planting area and cultivation technology points] Suitable for planting in the rainy season in the tropical subtropical ecological zone of Yunnan large-leaf tea area. It is suitable to adopt double rows of single plants or single rows of single plants, planting 1,500-2,000 seedlings per mu; strictly 3 times stereotyped pruning; strengthen the tea garden fertilization management. Pay attention to the prevention and control of thrips.

云茶37号 (Camellia sinensis var. assamica ‘Yuncha 37’). 陈亮等. 2024.《中国茶树品种资源志（上卷）茶树登记品种》第610-611页.【申请者】云南省农业科学院茶叶研究所。【育种者】田易萍；陈春林；邓少春；许燕；刘悦；陈林波；赵才美；孙超；叶爽；徐丕忠。【品种编号】非主要农作物品种登记号：GPD茶树（2024)530038。原云南省农作物品种审定编号：滇茶九号，原名‘云抗37号’。【品种来源】云南省农业科学院茶叶研究所从云南双江‘勐库大叶种’中单株选育而成。【特征特性】乔木型，大叶类，中生种。树姿开张，生长势强，分枝部位高，分枝稀。叶片向上着生，中等椭圆形，长13.4厘米，宽5.1厘米，叶色黄绿色，先端尖锐。在勐海地区开采期一般为3月下旬，一芽二叶盛期一般在3月中旬；发芽密度中等，茸毛多；一芽三叶长7.6厘米，一芽三叶百芽重102.0克。盛花期为每年9月中旬；花冠大小为3.2厘米x3.6厘米，花梗长度0.7厘米，花萼5个、绿色、有茸毛；花瓣7枚、色泽白色、质地中、有茸毛；花柱长度1.4厘米，柱头3裂、裂位浅，雌蕊和雄蕊相对高度为等高。春茶一芽二叶生化样含茶多酚33.5%，氨基酸2.6%，咖啡碱5.0%，水浸出物49.8%，适制红茶和普洱茶。制红茶，香气高甜、有品种香，滋味较浓强、较鲜爽。制普洱生茶，香气清香浓郁，滋味醇厚回甘；制普洱熟茶，香气较甜陈，滋味甘醇、较厚。第一生长周期亩产一芽二叶鲜叶665千克，比对照‘大黑茶’增产4%；第二生长周期亩产702千克，比对照‘大黑茶’增产5%。抗炭疽病、云纹叶枯病，中抗茶饼病，抗小绿叶蝉、咖啡小爪螨，中抗蓟马，耐寒性和耐旱性强。【适宜种植区域及栽培技术要点】适宜在热带亚热带生态区云南大叶种茶区雨季种植。宜采用双行单株或单行单株，每亩种植苗木1500-2000株；严格3次定型修剪；加强茶园培肥管理。注意防治蓟马。