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新梢表型性状特异性茶树种质资源研究进展

Research Progress on Characteristic Shoot Phenotype of Tea Germplasms

  • 摘要: 中国是茶树的原产地,具有丰富的茶树种质资源。保护和发掘茶树种质资源对茶树新品种选育和改良具有重要的应用价值,有利于茶产品市场的多元化和茶产业的健康持续发展。为了适应生长环境和市场需求的变化,茶树在自然进化和人工选择过程中发生了诸多性状变异。作为一种重要的叶用经济植物,茶树的叶色、叶形、树型等表型性状,由于具有易鉴别和易利用的特点,一直以来备受学者和应用者的关注。本文主要从茶树种质收集与培育现状、种质特性、变异机理等方面,对新梢表型性状特异性茶树种质资源的研究概况进行了综述,主要包括白(黄)化、紫化及其他具有观赏价值的茶树种质,以期为后续相关研究提供理论参考。

     

    Abstract: Being the origin of tea plants, China is abundant in a vast variety of germplasms. To strictly protect and appropriately explore the rich resource is of paramount importance for the preservation of natural inheritance as well as for future developments in improving and breeding new tea cultivars. And market diversification on tea products is crucial for nurturing a healthy and sustainable industry. In evolution, over time tea plants invariably go through morphological and physiological alterations in order to adapt to the ever-changing external conditions imposed by environmental and man-made elements. As a result, the process ushers in new variations and traits of tea plants. An important cash crop with its leaves, tea cultivars are evaluated for commercial values according to readily visually identifiable phenotypic characteristics for selection and categorization. This article selectively reviews the studies relating to the germplasm collection and cultivation, physiological and biochemical traits, as well as molecular mechanisms of tea germplasms with characteristic shoot phenotype, including albino, purple, and other specialty tea cultivars for their ornamental purposes. This review would provide reference for further relevant studies.

     

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