Rooting Efficiency in Tea Plant Varieties: Physiological and Biochemical Determinants

文献类型： 外文期刊

第一作者： Zhou, Yingyi

作者： Zhou, Yingyi;Zhang, Wenting;Li, Dongliang;Lu, Zhongcheng;Li, Dafei;Zhou, Huaisheng;Tang, Shi;Wang, Guanghui

作者机构：

关键词： Camellia sinensis; cutting propagation; endogenous hormones; enzyme activity; nutrients

期刊名称：HORTICULTURAL SCIENCE & TECHNOLOGY （ 影响因子：0.8； 五年影响因子：1.0 ）

ISSN： 1226-8763

年卷期： 2025 年 43 卷 3 期

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收录情况： SCI

摘要： This study investigated physiological and biochemical changes during the cutting propagation process in different tea plant varieties and the effects of these changes on the rooting efficiency. Dynamic changes in soluble sugars, soluble proteins, polyphenol oxidase (PPO), peroxidase cytokinins (CTK), and abscisic acid (ABA)) were monitored and analyzed during the cutting propagation process of six tea plant varieties: 'Hainan Dayezhong' (HD), 'Yunnan Dayezhong' (YD), 'Fuan Dabai' (FA), 'Fuding Dabai' (FD), 'Jinxuan' (JX), and 'Huang Guanyin' (HG), which have varying rooting abilities. The study revealed significant differences among the varieties in terms of the rooting time and rooting ability. JX demonstrated the highest rooting rate and fastest rooting process, with 86.3% of cuttings rooting successfully, while HD exhibited the lowest rooting rate, with only 22.86% of cuttings rooting successfully. Varieties with high rooting rates showed higher soluble sugar contents at the initial rooting stage, a significant early increase in PPO and POD activities followed by a decline, and reduced IAAO activity levels during the induction and development stages of adventitious root (AR) formation. Higher IAA/CTK and IAA/ABA ratios were generally associated with increased rooting rates. Medium-leaved varieties exhibited higher root formation rates overall, especially JX and FD. Our study shows that during the critical period of AR formation, several key physiological and biochemical changes determine differences in rooting ability among tea plant varieties. An increase in the IAA content was crucial for inducing root primordia in varieties with high rooting rates. Additionally, a decrease in the IAAO activity, elevated POD and PPO activities, and the rapid accumulation of soluble sugars and proteins were changes in these parameters, potentially explaining their lower rooting efficiency.

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