Zhenong 12

Zhenong 12 (Camellia sinensis). Ministry of Agriculture and Tea Research Institute, Chinese Academy of Agricultural Sciences. 1990. Collection on the improved tea varieties in China. p.90-91. Chen Liang et al. 2024. Records of Tea Cultivars and Resources of Chinese Tea resources (Volume I)-Registered Tea Cultivars. p.48-49: [Applicant] Zhejiang University. [Breeder] Liu Zusheng; Zhao Xueren; Wang Airong; Hu Yueling; Zhou Jugan; Liang Yuerong; Zhao Dong. [Variety number] Non-major crop variety registration number: GPD Tea Tree (2020)330027. former National Crop Variety Validation Committee identification number: GS13045-1987. [Variety origin] Zhejiang University Tea Research Institute from the natural hybridization of 'Fuding Dabaicha' and 'Yunnan Daye'. Source: Selected by Zhejiang University Tea Research Institute from 'Fuding Large White Tea' and 'Yunnan Large Leaf' natural hybrid progeny group. [Characteristics] Small tree type, medium species, strong growth potential, tree posture semi-open, medium leaf type, leaf blade length 8.7 cm, width 3.7 cm, leaf blade medium oval, leaf blade bearing state upward. In Hangzhou area spring tea bud one leaf period in mid to late March, the new buds and leaves green, velvet special, buds fat, bud three leaves 7.3 cm long, 100 buds weight 68.0 grams. Spring tea bud two leaves biochemical samples containing tea polyphenols 14.6%, amino acids 4.6%, caffeine 2.3%, water leachate 45.6%. Suitable for black tea and green tea, excellent quality. The system of black tea, strong flavor; the system of green tea, green emerald hair, high and persistent aroma, strong and fresh taste. The first growth cycle mu yield of one bud and two leaves 511 kg of fresh leaves, than the control 'Fuding Dabaicha' 29% increase in yield; the second growth cycle mu yield 632 kg, than the control 'Fuding Dabaicha' 35% increase in yield. High resistance to tea small green leaf maiden, high resistance to tea anthracnose, weak cold resistance, strong drought resistance. [Suitable for planting area and cultivation technology] Suitable for planting in Guangdong, Guangxi, Fujian, Jiangxi, Hunan, Zhejiang and other tea areas in spring, fall and winter. It is advisable to choose deep soil, windy and sunny plots, planted according to the specifications of conventional tea plantations. Cold resistance is weak. In the early years of severe cold, the main stem base is easy to freeze and crack, timely grass cultivation, appropriate control of late nitrogen fertilizer application.