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Effects of Autumn Topping and Canopy-Closing Mode on Endogenous Hormones of Spring Tea Shoots and Amino Acid Composition of Tea Leaves
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Fen Xiang1, Jing Ning1, Hongyan Liu1, Cuiting Dai1, Junhua Wang2, Jianquan Li1, Wei Li1
Crops | 2026, 42(2) : 188 - 193
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Crops | 2026, 42(2): 188-193
Effects of Autumn Topping and Canopy-Closing Mode on Endogenous Hormones of Spring Tea Shoots and Amino Acid Composition of Tea Leaves
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Fen Xiang1, Jing Ning1, Hongyan Liu1, Cuiting Dai1, Junhua Wang2, Jianquan Li1, Wei Li1
Affiliations
  • 1Tea Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, China
  • 2Baojing County Tea Industry Development Office, Baojing 416599, Hunan, China
Published: 2026-04-15 doi: 10.16035/j.issn.1001-7283.2026.02.023
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In order to explore the appropriate keeping way of tea plants before closing the garden, using “Baojinghuangjincha 1” as the test material, two autumn management treatments were set up, topping before garden closing (T) and no topping (CK). Samples were collected at germination stage, bud head stage as well as one bud and one leaf stage in spring, and the hormone content was determined. The amino acid components and related gene expression levels at one bud and one leaf stage were determined, and the correlation between hormone content and main amino acid components was analyzed. The results showed that budding density, 100-bud weight, and yield of tea plants in T treatment were extremely significantly increased compared with CK treatment. The determination of endogenous hormones in three periods showed that T treatment mainly affected the contents of auxin and cytokinin, the contents of auxin and cytokinin were positively correlated with the content of major amino acids, and the contents of theanine and aspartic acid were significantly positively correlated with the content of IAA-Ala. T treatment was beneficial to the accumulation of auxin and cytokinin in new shoots of tea plants in spring, promoted the germination and growth of lateral buds of tea plants, increased the yield, and T treatment was also beneficial to the accumulation of major amino acid components, such as theanine, aspartic acid, glutamate, serine, and improved the quality of tea.

Tea plant  /  Keeping mode  /  Endogenous hormone  /  Amino acid composition  /  Theanine
Fen Xiang, Jing Ning, Hongyan Liu, Cuiting Dai, Junhua Wang, Jianquan Li, Wei Li. Effects of Autumn Topping and Canopy-Closing Mode on Endogenous Hormones of Spring Tea Shoots and Amino Acid Composition of Tea Leaves[J]. Crops, 2026 , 42 (2) : 188 -193 . DOI: 10.16035/j.issn.1001-7283.2026.02.023
Year 2026 volume 42 Issue 2
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Article Info
doi: 10.16035/j.issn.1001-7283.2026.02.023
  • Receive Date:2025-01-21
  • Online Date:2026-04-30
  • Published:2026-04-15
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  • Received:2025-01-21
  • Revised:2025-02-15
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    1Tea Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, Hunan, China
    2Baojing County Tea Industry Development Office, Baojing 416599, Hunan, China
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表12种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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