Establishment of a low-cost photosynthesis measurement system based on a single-board microcomputer and CO₂ sensors

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権利情報

The version of record of this article, first published in Photosynthesis Research is available online at Publisher’s website: https://doi.org/10.1007/s11120-025-01170-5

権利情報

https://creativecommons.org/licenses/by-nc-nd/4.0/

主題

Closed system, CO₂ assimilation, Gas exchange, Low-cost phenotyping, M5 stack, Open system

内容記述

内容記述タイプ

Other

内容記述

Leaf photosynthetic rate serves as a growth indicator in plant science; however, the high cost (exceeding USD 70,000) of traditional measurement system is the main concern when making photosynthesis measurements of interest to a wide range of users. Recently, the availability of inexpensive environmental sensors and single-board microcomputers has increased substantially. In this study, we selected CO₂ sensors based on a comparative analysis of four cost-effective sensors. The economical K30 sensor demonstrated a superior response to CO₂ fluctuations, compared to the other tested low-cost sensors, and exhibited noise-free stability relative to the values recorded by the high-precision system (LI-850). A closed-chamber system was constructed, incorporating the K30 sensor into a self-made chamber controlled by a single-board microcomputer. The materials for the demo device incurred an approximate cost of USD 200, resulting in a low overall expense. Leaf photosynthesis measurements for sugarcane germplasm from the demo device were compared with those from a standard open system (LI-6400), revealing a significant correlation (p < 0.001). The root mean square error (RMSE) and relative RMSE were 1.4 and 7.6% under artificial light conditions (n = 50) and 3.6 and 13.3% under natural field light conditions (n = 45), respectively. The constructed low-cost photosynthesis measurement system, utilizing the K30 CO₂ sensor and a single-board microcomputer, demonstrated high responsiveness and accuracy comparable to commercial standard systems, thereby making it accessible and practical for a broader range of users. Future work will involve selecting an inexpensive humidity sensor and establishing a system for measuring water-use efficiency.

言語

出版者

Springer

日付

2025-09-05

日付タイプ

Accepted

言語

eng

資源タイプ

資源タイプ識別子

http://purl.org/coar/resource_type/c_6501

資源タイプ

journal article

出版タイプ

VoR

出版タイプResource

http://purl.org/coar/version/c_970fb48d4fbd8a85

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Ver.1

2025-10-28 01:26:47.898454

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