Effects of Different Gradients of Citric Acid Application on the Biomass and Photosynthetic Characteristics of Black Barley Flag Leaves

DOI

10.2991/978-94-6463-746-5_7How to use a DOI?

Keywords

Black barley; citric acid; Biomass; photosynthetic characteristics

Abstract

It is of great research significance to study the effects of different gradients of citric acid on the biomass and photosynthetic characteristics of flag leaf of black barley. Using black barley in Longzi as experimental material, a one-way randomized block design was adopted, and five citric acid gradient treatments, CK (0 kg/hm²), T1 (15 kg/hm²), T2 (30 kg/hm²), T3 (45 kg/hm²), and T4 (60 kg/hm²), were set to compare the effects of different gradients of citric acid on net photosynthetic rate, stomatal conductance, transpiration rate, and biomass of the flag leaf of black barley, stomatal conductance, intercellular carbon dioxide concentration, transpiration rate and biomass of black barley flag leaves under different gradients of citric acid treatment. The results showed that each gradient of citric acid treatment could improve the photosynthetic capacity of black barley flag leaves after flowering, and the best effect was achieved when the citric acid gradient was T2, and the photosynthetic indexes such as SPAD, net photosynthesis rate, stomatal conductance, inter-cellular CO₂ concentration and transpiration rate of the flag leaves after flowering were all higher than that of the blank photo-comparison CK (P<0.05); the aboveground biomass, root biomass and total biomass increased significantly and the root-crown ratio increased significantly with the different gradients of citric acid treatment, while the root-crown ratio increased significantly. biomass, root biomass and total biomass of aboveground part increased significantly, and root-crown ratio increased. In conclusion, the application of different gradients of citric acid can promote the production and accumulation of photosynthetic products of black barley, and then increase the biomass of black barley.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Qinyi Tang
AU  - Tao Tang
AU  - Jianlin Wang
PY  - 2025
DA  - 2025/05/27
TI  - Effects of Different Gradients of Citric Acid Application on the Biomass and Photosynthetic Characteristics of Black Barley Flag Leaves
BT  - Proceedings of the 2025 International Conference on Agriculture and Resource Economy (ICARE 2025)
PB  - Atlantis Press
SP  - 51
EP  - 62
SN  - 2468-5747
UR  - https://doi.org/10.2991/978-94-6463-746-5_7
DO  - 10.2991/978-94-6463-746-5_7
ID  - Tang2025
ER  -