Xiajinchang Dachashu 1

Xiajinchang Dachashu 1 （Camellia tachangensis）Yao Mingzhe et al. 2024. Records of Chinese Tea Cultivars and Resources (Volume III)-Precious Wild Tea Trees. p. 40 with detail description together with 3 photos in one plate on next page. Basic Information: 【Species Type】Wild related species; 【Place of Origin】Malipo County, Wenshan Zhuang and Miao Autonomous Prefecture, Yunnan Province; 【Conservation Location】Malipo County, Yunnan Province; 【Observation Site】Malipo County, Yunnan Province. Botanical Characteristics and Biological Traits: 【Tree】Small tree, semi-spreading habit, tree height 13.5m, crown width 11.9m x 10.7m, trunk diameter at base 0.9m, lowest branch height 0.2m, 3 branches, branches in the middle. 【New Shoots】One bud one leaf stage early March, one bud two leaves stage mid-March, buds and leaves green, few hairs, one bud three leaves length 7.6cm, weight of 100 buds at one bud three leaves stage 105.5g. 【Leaves】Leaves slightly inclined upwards, length 13.6cm, width 5.1cm, leaf area 48.7cm², large leaves, long-elliptical; leaf veins 9-11 pairs, leaf color green, leaf surface slightly raised, leaf blade slightly folded inward, leathery with medium hardness; leaf teeth blunt, dense, shallow; leaf base cuneate, leaf tip gradually pointed, leaf margin slightly wavy. 【Flowers】Full bloom mid-October, 5 green sepals with hairs; corolla diameter 8.8cm, 7-8 petals, white, medium texture, with hairs; ovary 5-loculed, glabrous, style 1.5cm, style apex 5-lobed, lobes deep, pistil tall. 【Fruit and Seeds】Fruit spherical, fruit diameter 5.1cm, fresh fruit skin thickness 12mm; seeds spherical, seed diameter 1.7cm, seed coat brown. Quality Traits: Spring tea one bud two leaves initial expansion dry sample water extract 41.1%, caffeine 2.4%, tea polyphenols 18.1%, amino acids 2.4%, phenol-to-amino ratio 7.5. Total catechins 134.1mg/g, including EGCG 18.9mg/g, EGC 88.9mg/g, ECG 5.0mg/g, EC 4.0mg/g, C 17.3mg/g. Resistance Traits: None.

下金厂大茶树1号（Camellia tachangensis ‘Xiajinchang Dachashu 1’）. 姚明哲等，2024.《中国茶树品种资源志（下）--茶树野生珍稀资源》第40页，含3幅图片。基本信息：【品种类型】野生近缘种；【原产地】云南省文山壮族苗族州麻栗坡县；【保存地】云南省麻栗坡县；【观测地点】云南省麻栗坡县。植物学特征和生物学特性：【树体】小乔木，树姿半开张，树高13.5m，树幅11.9m x 10.7m，基部干径0.9m，最低分枝高0.2m，有3个分枝，分枝中。【新稍】一芽一叶期3月上旬，一芽二叶期3月中旬，芽叶绿色、茸毛少，一芽三叶长7.6cm，—芽三叶百芽重105.5g。【叶片】叶片着生稍上斜，叶长13.6cm，叶宽5.1cm，叶面积48.7cm²，大叶，呈长椭圆形；叶脉9~11对，叶色绿，叶面微隆起，叶身内折，叶革质硬度中；叶齿锐度钝、密度密、深度浅，叶基楔形，叶尖渐尖，叶缘微波折。【花】盛花期10月中旬，萼片5枚、绿色、有茸毛；花冠直径8.8cm，花瓣7~8枚、白色、质地中、有茸毛；子房5室、无茸毛，花柱1.5cm，花柱先端5裂，裂位深，雌蕊高。【果实和种子】果实球形，果径5.1cm，鲜果皮厚12mm；种子球形，种径1.7cm，种皮棕褐色。 品质性状：春茶一芽二叶初展干样水浸出物41.1%，咖啡碱2.4%，茶多酚18.1%，氨基酸2.4%，酚氨比7.5。儿茶素总量134.1mg/g，其中EGCG 18.9mg/g，EGC 88.9mg/g，ECG 5.0mg/g，EC 4.0mg/g，C 17.3mg/g。   抗性性状：无