不同栽培模式对籽叶双收茶树新梢生理生化特性的影响

Abstract

Abstract: To explore the differences in tea leaf quality and metabolic profiles of a new seed-leaf dual-pupose tea cultivar ‘Jincha 1' under different cultivation patterns, the study investigated the phenological stages, lengths, weight per hundred buds of single bud, one bud with one leaf, and one bud with two leaves shoots under single plant sparse planting pattern and strip dense planting pattern. Moreover, comprehensive analyses were conducted on quality components and metabolomic profiling of the samples of one bud with two leaves. The results show that the tea cultivar ‘Jincha 1' under single plant sparse planting pattern yielded longer and heavier single buds, one bud with one leaf, and one bud with two leaves shoots compared to the strip dense planting pattern. Additionally, there is a delayed maturity period single plant sparse planting. Furthermore, the contents of tea polyphenols, catechins and gallic acid in the new shoots of single plant sparse planting pattern were 3.96, 5.06, and 1.19 percentage points higher than those of strip dense planting pattern, respectively. Conversely, strip dense planting resulted in higher total amino acid (1.27 percentage points) and theanine (0.21 percentage points) contents. A total of 163 significantly differential metabolites were identified by comparative metabolomics analysis, which were largely enriched in amino acid and polyphenol biosynthetic pathways. Notably, the contents of abscisic acid (ABA), gibberellin (GA), and jasmonic acid (JA) were higher in the single plant sparse planting pattern than those in the strip dense planting pattern. While, the levels of indoleacetic acid (IAA), 6-chloroadenosine phosphate (6-KT), and indole-3-butyric acid (IBA) in the single plant sparse planting pattern were lower than those in the strip dense planting pattern. This study reveals the mechanism by which different cultivation modes affect the tea quality through the regulation of endogenous hormones and metabolic pathways, providing a practical model for efficient cultivation in industrial promotion.

Key words: tea plant, cultivation pattern, seed-leaf dual-purpose, biological characteristics, metabolic mechanism

CLC Number:

S571.1
S326

JIANG Li, LI Duojiao, HU Xinrong, SHEN Yingzi, ZHENG Zhaisheng, WENG Xiaoxing, LIU Shujing, BIAN Xiaodong, YUAN Ming'an, CHEN Xuan. Effects of Different Cultivation Patterns on Physiological and Biochemcial Characteristics of New Shoots in Seed-Leaf Dual-Purpose Tea Plants[J]. Journal of Tea Science, 2025, 45(5): 783-794.

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Effects of Different Cultivation Patterns on Physiological and Biochemcial Characteristics of New Shoots in Seed-Leaf Dual-Purpose Tea Plants

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