Growth of Cucumber and Tomato Seedlings by Different Light Intensities and CO2 Concentrations in Closed-type Plant Production System

Ji Hye Yun; Hyeon Woo Jeong; So Yeong Hwang; Jin Yu; Hee Sung Hwang; Seung Jae Hwang

doi:10.12791/KSBEC.2023.32.4.257

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2023 Vol.32, Issue 4 Next Page

Original Articles

Growth of Cucumber and Tomato Seedlings by Different Light Intensities and CO₂ Concentrations in Closed-type Plant Production System 밀폐형 식물생산시스템 내 CO₂와 광도에 따른 오이 및 토마토 묘의 생육

31 October 2023. pp. 257-266

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Abstract

This study was conducted to investigate the growth characteristics of cucumber (Cucumis sativus L. ‘Joeunbaekdadagi’) and tomato (Solanum lycopersicum L. ‘Dotaerang Dia’) seedlings by light intensities and CO₂ concentrations in a closed-type plant production system (CPPS). Cucumber and tomato seeds were sown in 50-cell trays and germinated in CPPS at air temperature 25 ± 1°C and relative humidity 50 ± 10% for 4 days. After germination, the CO₂ concentrations and light intensity treatment were treated at 500 (ambient), 1,000, and 1,500 µmol·mol^-1 and 100, 200, and 300 µmol·m^-2·s^-1 photosynthetic photon flux density (PPFD), respectively. The leaf area of cucumber showed the highest value in CO₂ 1,500 μmol·mol^-1. However, the leaf area of the tomato had no significant difference in CO₂ concentrations and light intensities treatments. In cucumber and tomato both seedlings, the growth and quality such as compactness and leaf area rate were increased with the increase of light intensity, and there were highest in 300 µmol·m^-2·s^-1. The root surface and number of root tips of cucumber and tomato seedlings were significantly increased with the increase in light intensity. In conclusion, the regulation of the CO₂ concentrations and light intensity can control the growth and quality of cucumber and tomato seedlings in CPPS, especially, increasing the light intensity can improve more significantly the growth and quality of seedlings.

Keywords

compactness

leaf area rate

number of root tips

root surface

seedling quality

본 연구는 밀폐형 식물생산 시스템(CPPS)에서 광도와 CO2 농도에 따른 오이와 토마토 묘의 생육을 조사하기 위해 수행되었다. 오이(Cucumis sativus L. ‘Joeunbaekdadagi’)와 토마토(Solanum lycopersicum L. ‘Dotaerang Dia’)를 50구 트레이에 파종하여 CPPS에서 25℃, 50% 상대습도에서 4일 동안 발아시켰다. 발아 후 CO₂ 농도 처리 및 광도는 각각 500(무처리구), 1,000, 그리고 1,500µmol·mol^-1 와 100, 200, 그리고 300µmol·m^-2·s^-1로 재배하였다. 오이의 엽면적은 광도보다 CO₂ 농도 변화에 영향을 받으며 1,500µmol·mol^-1 CO₂ 농도 조건에서 엽면적이 가장 넓었다. 반면에 토마토의 엽면적은 CO₂ 농도와 광도 변화에 따른 유의미한 차이를 나타내지 않았다. 광도가 증가함에 따라, 오이와 토마토의 생육과 묘소질(충실도와 엽면적비)이 유의적으로 증가하는 경향을 나타냈고, 광도 300µmol·m^-2·s^-1에서 가장 높았다. 오이와 토마토 묘의 근권 표면적, 근단 수는 광도의 증가에 따라 유의적으로 증가하였다. 결론적으로 CO₂ 농도와 광도의 조절은 오이와 토마토 묘의 생육과 묘소질을 조절할 수 있으나, CO₂ 농도보다 광도의 영향을 크게 받았으며, 광도가 증가함에 따라 생육, 묘소질, 그리고 뿌리가 발달하는 경향이 나타났다.

키워드

근권 표면적

근단 수

묘소질

엽면적비

충실도

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Information

Publisher :The Korean Society for Bio-Environment Control
Publisher(Ko) :(사)한국생물환경조절학회
Journal Title :Journal of Bio-Environment Control
Journal Title(Ko) :생물환경조절학회지
Volume : 32
No :4
Pages :257-266
Received Date : 2023-06-26
Revised Date : 2023-07-25
Accepted Date : 2023-08-12
DOI :https://doi.org/10.12791/KSBEC.2023.32.4.257

Journal of Bio-Environment Control 생물환경조절학회지 ISSN:1229-4675(Print) 2765-3641(Online)

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