Adverse effects of shading on the tea yield and the restorative effects of exogenously applied brassinolide
文献类型： 外文期刊
作者： Chen, Jiaming 1 ; Wu, Shuhua 1 ; Mao, Kaiquan 1 ; Li, Jianlong 4 ; Dong, Fang 5 ; Tang, Jinchi 4 ; Zeng, Lanting 1 ; Gu, Dachuan 1 ;
作者机构： 1.Chinese Acad Sci, Guangdong Prov Key Lab Digital Bot Garden & Popula, South China Bot Garden, 723 Xingke Rd, Guangzhou 510650, Peoples R China
2.Chinese Acad Sci, Key Lab South China Agr Plant Mol Anal & Genet Imp, South China Bot Garden, 723 Xingke Rd, Guangzhou 510650, Peoples R China
3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
4.Guangdong Acad Agr Sci, Tea Res Inst, 6 Dafeng Rd, Guangzhou 510640, Peoples R China
5.Guangdong Food & Drug Vocat Coll, Longdongbei Rd 321, Guangzhou 510520, Peoples R China
关键词： Camellia sinensis; Shading; Brassinolide; Yield; Quality
期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.9； 五年影响因子：6.0 ）
ISSN： 0926-6690
年卷期： 2023 年 197 卷
页码：
收录情况： SCI
摘要： Shading during cultivation leads to increased tea quality, but its effect on tea yield remains unclear. In this study, shading decreased the tea plant yield because it resulted in the production of thin leaves and shortened in-ternodes as well as a decreased photosynthetic rate. The exogenous application of brassinolide (BL), which is a novel phytohormone, recovered some of the lost yield caused by shading by increasing the leaf area, promoting internode elongation, and increasing the photosynthetic rate. Moreover, BL did not affect the enhancement effect of shading on tea quality. The exogenous application of BL could increase the content of total amino acid (AA), geraniol, chlorophyll and carotenoid, and reduce polyphenols-to-amino acids ratio (P/A) in green tea processed from shaded tea leaves. Our findings have clarified the effects of shading on tea plants and explored measures to address shading-induced yield losses without affecting the enhancement of quality, which have potential im-plications for limiting shading-induced yield losses in tea plants.
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