pH值对两种野生茶树生长生理的影响
Effect of pH Value on Growth and Physiology of Two Wild Tea Trees
安红卫 1宋勤飞 1牛素贞1
作者信息
摘要
通过探究4种pH值对2种贵州野生茶树生长生理的影响,了解其生长适应的pH值范围,为野生茶树种质资源的进一步利用提供理论依据.本研究利用4种pH值的营养液对2种贵州野生茶树S01、S02进行培养,测定其各类生理指标的变化.结果表明,两种幼苗在pH值为4.5～6.5均可正常生长,没有出现病变,pH值为7.5时有部分叶片出现黄化现象,S01茶树叶边缘出现红斑;pH值为7.5时茶树幼苗净增叶面积、净增叶片数、净增根长、净增茎粗最低,但茶树可以进行生长发育;在pH值为4.5～7.5处理下,都匀野生小叶圆茶幼苗叶片的含水量、导电率、H2O2含量表现正常,但O2-产生速率在pH值为7.5处理下降低.结果表明都匀野生小叶圆茶在弱碱性环境下能够生长,都匀清塘镇分布的野生茶树对土壤pH值适应范围较广,对茶树的栽培管理、野生茶树种质资源的保护和发掘,及茶树新品种的选育和推广提供了理论和实践基础.
Abstract
Study the influence of 4 pH values on the growth physiology of two wild tea tree in Guizhou,to understood the pH range of its adaptation to growth,to provided a theoretical basis for the further utilization of wild tea germplasm resources.Two kinds of wild tea plants S01 and S02 in Guizhou were cultured with 4 kinds of pH nutrient solution,the changes of various physiological indexes were determined.Two kinds of seedlings could grew normally at pH value 4.5～6.5,no pathological change,some leaves appeared yellowing when pH value 7.5,and S01 appeared erythema on the edge of tea leaves;the net leaf area,leaf number,root length and stem diameter of tea seedlings were the lowest when pH value 7.5,but tea seedlings still could grew and developed;under the treatment of pH value 4.5～7.5,the water content,electrical conductivity and H2O2 content of the leaves of Duyun wild lobular round tea seedlings were normal,but the production rate of O2-decreased under the treatment of pH value 7.5.Conclusion:Duyun wild lobular round tea could grew in weak alkaline environment,and the wild tea trees distributed in Qingtang town of Duyun could adapt to a wide range of soil pH value,it provided a theoretical and practical basis for the cultivation and management of tea,the protection and exploration of wild tea germplasm resources,and the breeding and popularization of new tea varieties.
关键词
茶树/pH值/生理生长/弱碱性环境Key words
Tea trees/pH value/Physiological growth/Weak alkaline environment引用本文复制引用
基金项目
国家自然科学基金(31560222)
贵州省科技厅农业攻关项目(黔科合支撑[2017]2558)
贵州省科技厅农业攻关项目(黔科合支撑[2017]2557)
贵州省自然科学基金重点项目(黔科合基础[2019]1404号)
贵州大学培育项目(黔科合平台人才[2018]5781-37)
黔西南州科技计划(2018-1-56)
黔西南州科技计划(2018-1-53)
出版年
2024
NETL
NSTL
万方数据