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Effects of a weak supply of light at night on the growth and quality components of tea plants

Qin-Ling Liu
Qin-Ling Liu
, 
Shu-Ling Dong
Shu-Ling Dong
, 
Xiao-Li Hu
Xiao-Li Hu
, 
Yang Yang
Yang Yang
, 
Qian Tang
Qian Tang
 oraz 
Li-Qiang Tan
Li-Qiang Tan
   | 31 gru 2022
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Article Category: Original Article
Data publikacji: 31 gru 2022
Zakres stron: 263 - 269
Otrzymano: 04 sie 2022
Przyjęty: 02 gru 2022
DOI: https://doi.org/10.2478/fhort-2022-0020
Słowa kluczowe
© 2022 Qin-Ling Liu et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Figure 1

Field experiments of this study; (A) a picture showing the treatments that supply light; (B) spectrum of different WSL treatments; (C) air temperature and rainfall during the experimental period; (D) five points for recording the SPI. PPFD, photosynthetic photon flux density; SPI, sprouting index; WSL, weak supply of light.
Field experiments of this study; (A) a picture showing the treatments that supply light; (B) spectrum of different WSL treatments; (C) air temperature and rainfall during the experimental period; (D) five points for recording the SPI. PPFD, photosynthetic photon flux density; SPI, sprouting index; WSL, weak supply of light.

Figure 2

Effects of WSL treatments on the bud flush of tea plants; (A) representative pictures of tea buds with different SPIs, which are shown in yellow numbers; (B) SPIs of different treatments on 14 March 2021. *p < 0.05 and **p < 0.01 indicate significant differences compared with those of the CK. CK, control; SPI, sprouting index; TM, treatment; WSL, weak supply of light.
Effects of WSL treatments on the bud flush of tea plants; (A) representative pictures of tea buds with different SPIs, which are shown in yellow numbers; (B) SPIs of different treatments on 14 March 2021. *p < 0.05 and **p < 0.01 indicate significant differences compared with those of the CK. CK, control; SPI, sprouting index; TM, treatment; WSL, weak supply of light.

Catechin content in the treatments (mg · g−1).

Treatment CK TM1 TM2 TM3 TM4 TM5 TM6
EGC 13.76 ± 1.86 15.13 ± 1.08 14.45 ± 1.88 15.41 ± 1.50 14.90 ± 1.35 14.02 ± 0.15 14.04 ± 0.56
EC 7.50 ± 1.11 8.79 ± 0.52 7.79 ± 1.16 8.44 ± 0.81 8.83 ± 0.37 7.65 ± 0.18 7.90 ± 0.96
EGCG 49.92 ± 6.54 61.35 ± 1.74 53.60 ± 6.96 56.19 ± 6.41 56.37 ± 9.30 58.30 ± 7.86 56.54 ± 8.88
GCG 3.34 ± 0.25 3.53 ± 0.43 3.31 ± 0.38 3.33 ± 0.31 3.27 ± 0.42 3.57 ± 0.19 3.37 ± 0.31
ECG 7.69 ± 0.98 9.82 ± 0.47 8.36 ± 0.97 8.96 ± 1.07 8.92 ± 1.77 9.04 ± 1.36 9.01 ± 1.67
CG 3.45 ± 0.38 3.26 ± 0.09 3.28 ± 0.39 3.20 ± 0.21 3.17 ± 0.16 3.50 ± 0.29 3.23 ± 0.07
Total catechins 85.67 ± 9.97 101.90 ± 2.46** 90.79 ± 8.79 95.53 ± 9.20* 95.47 ± 11.38 96.08 ± 9.48* 94.09 ± 11.69

Content of the anthocyanins (mg · 100 g−1 DW), caffeine and free amino acids (mg · g−1 DW).

Treatment CK TM1 TM2 TM3 TM4 TM5 TM6
Delphinidin 251.37 ± 9.49 234.03 ± 7.10 235.82 ± 8.98 218.41 ± 17.50 225.59 ± 9.57 235.13 ± 7.04 224.25 ± 12.13
Cyanidin 95.22 ± 16.57 94.71 ± 8.92 91.66 ± 13.71 94.14 ± 10.44 96.18 ± 26.72 87.86 ± 7.55 81.70 ± 3.52
Pelargonidin 13.59 ± 0.66 12.71 ± 0.20 13.30 ± 0.77 12.19 ± 0.67 12.39 ± 0.36 12.80 ± 0.84 12.12 ± 1.02
Anthocyanins 360.18 ± 16.31 341.45 ± 11.95 340.78 ± 5.54 324.75 ± 17.96** 334.16 ± 30.68* 335.79 ± 4.40* 318.07 ± 15.00**
Caffeine 39.75 ± 2.25 40.83 ± 0.58 40.16 ± 2.39 40.68 ± 1.22 39.96 ± 1.74 41.23 ± 2.01 40.25 ± 1.54
Free amino acids 51.35 ± 4.99 52.10 ± 4.60 52.00 ± 3.07 53.97 ± 2.07 53.86 ± 4.21 49.47 ± 2.38 51.94 ± 3.92

Bud weight, length and total yield of the treatments.

Treatment CK TM1 TM2 TM3 TM4 TM5 TM6
Weight (g) 5.08 ± 0.40 5.49 ± 0.15 5.12 ± 0.50 5.17 ± 0.31 5.43 ± 0.63 5.39 ± 0.25 5.42 ± 0.11
Length (cm) 5.22 ± 0.25 5.57 ± 0.32 5.17 ± 0.43 5.39 ± 0.30 5.18 ± 0.41 5.40 ± 0.21 5.33 ± 0.23
Yield (g · m−2) 243.56 ± 32.16 266.17 ± 29.80 259.73 ± 72.24 274.43 ± 48.72 278.69 ± 61.07 282.39 ± 68.51 279.41 ± 54.60

WSL treatment in this study.

Experimental design Light quality PPFD (μmol · m−2 · s−1) Duration (h) Light mass ratio
Blue Green Red
Control check (CK) / <0.01 0
Treatment 1 (TM1) Light I 5 ± 1 5 1.36 2.35 1.29
Treatment 2 (TM2) Light II 5 ± 1 5 1.35 1.78 1.87
Treatment 3 (TM3) Light III 5 ± 1 5 0.40 1.54 3.06
Treatment 4 (TM4) Light IV 5 ± 1 5 1.07 0.92 3.01
Treatment 5 (TM5) Light I 5 ± 1 3 1.36 2.35 1.29
Treatment 6 (TM6) Light I 2 ± 1 5 1.36 2.35 1.29
eISSN:
2083-5965
Język:
Angielski
Częstotliwość wydawania:
2 razy w roku
Dziedziny czasopisma:
Life Sciences, Plant Science, Zoology, Ecology, other
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