首页|pH值对两种野生茶树生长生理的影响

pH值对两种野生茶树生长生理的影响

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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.
Effect of pH Value on Growth and Physiology of Two Wild Tea Trees
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.

Tea treespH valuePhysiological growthWeak alkaline environment

安红卫、宋勤飞、牛素贞

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贵州大学茶学院,贵阳,550025

茶树 pH值 生理生长 弱碱性环境

国家自然科学基金贵州省科技厅农业攻关项目贵州省科技厅农业攻关项目贵州省自然科学基金重点项目贵州大学培育项目黔西南州科技计划黔西南州科技计划

31560222黔科合支撑[2017]2558黔科合支撑[2017]2557黔科合基础[2019]1404号黔科合平台人才[2018]5781-372018-1-562018-1-53

2024

10.13271/j.mpb.022.002017

分子植物育种
海南省生物工程协会

分子植物育种

CSTPCD北大核心
影响因子：0.765
ISSN：1672-416X
年,卷(期)：2024.22(6)
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