Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Effects of Low Air Temperature and Low Radiation Conditions on Yield and Quality of Hot Pepper at the Early Growth Stage

생육 초기의 저온·저일조가 고추의 수량과 품질에 미치는 영향

  • Wi, Seung Hwan (Vegetable Research Division, National Institute of Horticultural & Herbal Science) ;
  • Lee, Hee Ju (Vegetable Research Division, National Institute of Horticultural & Herbal Science) ;
  • Yu, In Ho (Vegetable Research Division, National Institute of Horticultural & Herbal Science) ;
  • Jang, Yoon Ah (Vegetable Research Division, National Institute of Horticultural & Herbal Science) ;
  • Yeo, Kyung Hwan (Vegetable Research Division, National Institute of Horticultural & Herbal Science) ;
  • An, Se Woong (Vegetable Research Division, National Institute of Horticultural & Herbal Science) ;
  • Lee, Jin Hyong (Vegetable Research Division, National Institute of Horticultural & Herbal Science) ;
  • Kim, Sung Kyeom (Department of Horticultural Science, College of Agriculture & Life science, Kyungpook National University)
  • 위승환 (농촌진흥청 국립원예특작과학원 채소과) ;
  • 이희주 (농촌진흥청 국립원예특작과학원 채소과) ;
  • 유인호 (농촌진흥청 국립원예특작과학원 채소과) ;
  • 장윤아 (농촌진흥청 국립원예특작과학원 채소과) ;
  • 여경환 (농촌진흥청 국립원예특작과학원 채소과) ;
  • 안세웅 (농촌진흥청 국립원예특작과학원 채소과) ;
  • 이진형 (농촌진흥청 국립원예특작과학원 채소과) ;
  • 김성겸 (경북대학교 농업생명과학대학 원예학과)
  • Received : 2020.08.25
  • Accepted : 2020.10.07
  • Published : 2020.10.31
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Abstract

This study was conducted to determine the effect of low temperature and low radiation conditions on the yield and quality of hot pepper at an early growth stage in Korea. In plastic greenhouses, low temperature, low temperature with covered shading treatments were set 17 to 42 days after transplanting. The pepper growing degree days decreased by 5.5% due to the low temperature during the treatment period. Radiation decreased by 74.7% due to the covered shading. After commencing treatments, pepper plant growth decreased with low temperature and low radiation. Analysis of the yield showed that the first harvest was delayed by low radiation. The cumulative yields of 119 days after transplanting were 1,956, 2,171, and 2,018 g/㎡ for control, low temperature, and low temperature with low radiation respectively. Capsaicin and dihydrocapsaicin concentrations in pepper fruit decreased with low temperature and low radiation. To investigate the photosynthetic characteristics according to the treatment, the carbon dioxide reaction curve was analyzed using the biochemical model of photosynthesis. Results showed that the maximum photosynthetic rate, Vcmax (maximum carboxylation rate), J (electric transportation rate), and TPU (triose phosphate utilization) decreased at low temperatures; the maximum photosynthetic rate, J, and gm (dark respiration rate) were reduced by shading. These results indicate that low temperature and low radiation can retard early growth, yield, and quality, but these can also be recovered 119 days after planting. Based on the results, the yield and quality of pepper can recover from abiotic stresses with proper cultivation.

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References

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