Cut Flower Yields and Qualities of Rosa hybrid Affected by Night Cooling in High Temperature Season

Se Jin Kim; Won Hee Kim; Young Ran Lee; Hyun Hwan Jung

doi:10.12791/KSBEC.2023.32.1.015

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2023 Vol.32, Issue 1 Preview Page Next Page

Original Articles

Cut Flower Yields and Qualities of Rosa hybrid Affected by Night Cooling in High Temperature Season 고온기 야간 냉방이 절화 장미 수량 및 품질에 미치는 영향

31 January 2023. pp. 15-22

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Abstract

Roses are one of the most produced flower species in the world, and cut roses are produced in the greenhouses all year round. Recently, due to the increase in the temperature in the greenhouses in summer, the quality of cut roses is seriously deteriorated, such as shortening the stem length. This study was conducted to investigate the effects of the growing seasons on the qualities of cut roses and also to test the effect of cooling at night in high temperature season on the cut flower qualities of roses. Comparing the qualities and yields of cut roses for each season, the major cut flower qualities such as flower stem length, stem diameter and fresh weight were statistically significantly decreased in roses (‘Pink Beauty’ and ‘Pink Shine’) produced in summer. The yields didn’t show a statistically significant difference in both cultivars. Investigating the cut flower qualities, the flower stem length increased by 15% for ‘Pink Beauty’, 11% for ‘Ararat’, and 12% for ‘Pink Shine’ when treated with cooling at night in warm season than the untreated control. In addition, when treated with cooling at night in warm season, the fresh weight of all three cultivars increased by 20-30% statistically significantly than conventionally cultivated control. It is expected that cooling at night in warm season will be helpful to improve the cut flower quality deterioration in summer.

Keywords

cut rose

flower stem length

fresh weight

greenhouse

stem diameter

장미는 전세계적으로 가장 많이 생산되는 화종 중 하나로, 절화 장미는 시설 내부에서 연중 생산된다. 최근 여름철 시설 내부 온도 상승으로 인해 절화장 단축 등 절화 장미의 품질 저하가 심각하게 발생하고 있다. 본 연구는 계절별 절화 품질 및 수량을 비교하여 여름철 생산된 절화 장미의 품질 특성을 파악하고, 고온기 야간 냉방을 통한 온도 하강 효과와 여름철 절화 품질 개선 효과를 검정하고자 수행하였다. ‘Pink Beauty’은 여름철 절화장, 화수장, 경경, 화수경경, 화폭, 생체중 등이 통계적으로 유의하게 저하되었으며, ‘Pink Shine’은 여름철 절화장, 경경, 화폭 및 화고, 생체중이 통계적으로 유의하게 저하되었다. 고온기 야간 냉방을 수행한 결과, 7－8월 온실 내부 평균 온도는 약 2.5℃ 저하되었으며, 배지 평균 온도는 약 3.0℃ 감소되었다. 고온기 야간 냉방 시 절화 품질 및 수량을 비교한 결과 세 품종 모두 야간 냉방 시 절화장, 생체중, 경경 등 절화 품질이 향상되었다. 이를 통해 고온기 야간 냉방이 여름철 절화 장미의 품질 저하 문제 해결에 도움이 될 것으로 기대된다.

키워드

경경

생체중

온실

절화장

절화 장미

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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 :1
Pages :15-22
Received Date : 2022-10-17
Revised Date : 2023-01-16
Accepted Date : 2023-01-16
DOI :https://doi.org/10.12791/KSBEC.2023.32.1.015

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

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