Minerals in Oolong Tea Germplasms

ZHENG Shu-lin; SHI Yu-tao; WANG Fei-quan; ZHANG Bo; WANG Han; LIN Li; SHI Yuan-zhi; YE Nai-xin

doi:10.19303/j.issn.1008-0384.2020.02.005

Volume 35 Issue 2

Feb. 2020

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ZHENG S L, SHI Y T, WANG F Q, et al. Minerals in Oolong Tea Germplasms [J]. Fujian Journal of Agricultural Sciences，2020，35（2）：150−160 doi: 10.19303/j.issn.1008-0384.2020.02.005

Citation:

ZHENG S L, SHI Y T, WANG F Q, et al. Minerals in Oolong Tea Germplasms [J]. Fujian Journal of Agricultural Sciences，2020，35（2）：150−160 doi: 10.19303/j.issn.1008-0384.2020.02.005

ZHENG S L, SHI Y T, WANG F Q, et al. Minerals in Oolong Tea Germplasms [J]. Fujian Journal of Agricultural Sciences，2020，35（2）：150−160 doi: 10.19303/j.issn.1008-0384.2020.02.005

Citation:

ZHENG S L, SHI Y T, WANG F Q, et al. Minerals in Oolong Tea Germplasms [J]. Fujian Journal of Agricultural Sciences，2020，35（2）：150−160 doi: 10.19303/j.issn.1008-0384.2020.02.005

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Minerals in Oolong Tea Germplasms

doi: 10.19303/j.issn.1008-0384.2020.02.005

ZHENG Shu-lin^{1, 2
,},
SHI Yu-tao^{2
,
,},
WANG Fei-quan²,
ZHANG Bo²,
WANG Han³,
LIN Li³,
SHI Yuan-zhi⁴,
YE Nai-xin^{1
,
,}

1.
College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian　350002, China
2.
College of Tea and Food Science, Wuyi University/Tea Engineering Research Center of Fujian Higher Education, Wuyishan, Fujian　354300, China
3.
College of Ecological and Resources Engineering, Wuyi University, Wuyishan, Fujian　354300, China
4.
Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, Zhejiang　310008, China

Received Date: 2019-12-24
Rev Recd Date: 2020-01-18
Publish Date: 2020-02-01

Abstract

Abstract

Objective Characteristics and contents of minerals in Oolong tea germplasms were studied to facilitate the classification, cultivar selection, and new variety breeding on tea plants. Method Contents of 18 minerals in 34 Oolong tea germplasms were determined by ICP-OES, and classified using principal component and cluster analyses. Result The average mineral contents in the specimens were found to be in the order of K＞P＞S＞Mg＞Ca＞Mn＞Al＞Fe＞Na＞Zn＞Ba＞Cu＞B＞Ti＞Ni＞Cr＞Co＞Se. The coefficients of variation ranged from 15.75% on P to 69.43% on Ti. The average genetic diversity indices varied from 1.27 on Ti to 2.21 on Zn. The contents of B, K, Mg, Mn, Na, Ni, P, S, Se, and Zn followed the normal distribution pattern, while those of Al, Ba, Ca, Co, Cr, Cu, Fe, and Ti a skew distribution, according to a W test. The correlations among these minerals were complex. The principal component analysis classified the 18 minerals into 5 groups that covered 77.40% of the total. By the cluster analysis, the 34 tea germplasms were grouped into 3 categories. Conclusion Mainly Mn, Ca, Mg, Al, K, P and S, the mineral compositions in the 34 Oolong tea germplasms differed. Based on their varied contents, the germplasms were classified into 3 types including (a) high P, Zn and low Al, Ca, Mn, Mg, (b) high Al, Ca, Mn, Mg, K, S, and (c) low K, P, S, Zn. Five Oolong teas with high mineral accumulation capacity and nutritional value were Zhilanxiang, Benshan, Ruixiang, Tieguanyin, and Huangdan, which were considered desirable cultivars for large scale cultivation and new variety breeding as well as product development for marketing.
- Oolong tea,
- germplasm,
- minerals,
- cluster analysis,
- principal component analysis

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References(20)

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