Effects of Different Potassium Level on Leaf Photosynthesis of Tea Seedling

LIN Zheng-he; ZHONG Qiu-sheng; CHEN Chang-song; CHEN Zhi-hui; YOU Xiao-mei

doi:10.13305/j.cnki.jts.2013.03.013

Journal of Tea Science >

2013 , Vol. 33 >Issue 3: 261 - 267

DOI: https://doi.org/10.13305/j.cnki.jts.2013.03.013

Effects of Different Potassium Level on Leaf Photosynthesis of Tea Seedling

LIN Zheng-he ,
ZHONG Qiu-sheng ,
CHEN Chang-song ,
CHEN Zhi-hui ,
YOU Xiao-mei

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Tea Research Institute, Fujian Academy of Agricultural Sciences, Fu’an 355000, China

Received date: 2012-09-14

Revised date: 2012-11-13

Online published: 2019-09-04

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Abstract

Vegetative propagated 10-month-old tea [Camellia sinensis (L.) O. Kuntze cv. Ruixiang] seedlings grown in pots were fertilized three times weekly for 24 weeks with nutrient solution containing 0, 100, 200, 600 or 2β000βμmol/L potassium. The portable photosynthesis system (LI-6400) was used to determine leaf photosynthesis of tea. The result showed that K-deficient leaves showed decreased CO₂ assimilation and stomatal conductance, water use efficiency but increased intercellular CO₂ concentration. Result also showed that biomass, content of K and chlorophyll were decreased in K-deficient leaves. The tea seeding appeared potassium deficiency symptoms when fertilized with nutrient solution containing 0, 100βμmol/L potassium(K content of leave 6.63βmg/g, 6.85βmg/g).

Key words： tea plant; K deficiency; photosynthesis; chlorophyll

Cite this article

LIN Zheng-he , ZHONG Qiu-sheng , CHEN Chang-song , CHEN Zhi-hui , YOU Xiao-mei . Effects of Different Potassium Level on Leaf Photosynthesis of Tea Seedling[J]. Journal of Tea Science, 2013 , 33(3) : 261 -267 . DOI: 10.13305/j.cnki.jts.2013.03.013

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