Zhongcha 503

Zhongcha 503 (Camellia sinensis). Chen Liang et al. 2024. Records of Tea Cultivars and Resources of Chinese Tea resources (Volume I)-Registered Tea Cultivars. p.150-151: [Applicant] Institute of Tea Research, Chinese Academy of Agricultural Sciences. [Breeder] Zeng Jianming; Yang Yajun; Zhang Zhifang; Wang Xinchao; Wang Lu; Hao Xinwang; Li Xiaoren. [Variety Number]: Non-major Crop Variety Registration No. GPD Tea Tree (2022)330053. [Variety Source] Selected by Tea Research Institute, Chinese Academy of Agricultural Sciences, from the seed progeny of 'Zhongcha 108' as a single plant. [Characteristics] Shrub type, early species, erect posture, medium leaf type, leaf length 9.3 cm, width 3.9 cm, leaf blade medium oval, leaf bearing state upward. In Hangzhou area spring tea bud one leaf period in late March, the new buds and leaves yellowish green, velvet medium, a bud three leaves length 5.9 cm, 100 bud weight 35.0 grams. Spring tea bud two leaves biochemical samples containing tea polyphenols 19.0%, amino acids 4.0%, caffeine 2.8%, water leachate 48.7%. Suitable for green tea. Baked green tea system, the appearance of fine tight curls, hair, green and fresh, soup color green and bright, high fresh aroma, chestnut aroma, taste sweet and fresh. The first growth cycle of the annual mu yield of one bud and two leaves 517 kg of fresh leaves, than the control 'Fuding Dabaicha' 12% increase in yield; the second growth cycle of the annual mu yield of 595 kg, than the control 'Fuding Dabaicha' 5% increase in yield. Highly susceptible to tea small green leafhopper, susceptible to tea anthracnose, resistant to cold and drought. Three consecutive years of machine picking test, when a bud of three leaves on the surface of the new shoots reached about 30%, the proportion of machine picking complete new shoots reached 79%, suitable for high-quality tea machine picking. [Suitable for planting area and cultivation technology points] Suitable for planting in the Jiangnan ecological zone in Hangzhou, Zhejiang Province in the fall or spring rainfall more abundant time. This variety is suitable for machine picking, after planting should be cut in time to promote the formation of machine picking surface; timely prevention and control of tea small green leafhopper and tea anthracnose.