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논문 기본 정보

자료유형
학술저널
저자정보
Wan Soon Kim Jeong Sik Lee
저널정보
한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY Vol.49 No.4
발행연도
2008.8
수록면
226 - 231 (6page)

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Night temperature is one of the major factors that are related to energy costs in winter greenhouse production of cut flowers, especially of cut roses which are known to require relatively high night temperature of about 18℃. This study was conducted to investigate the effect of night temperature on light use efficiency of a cut rose cultivar. Single stem rose plants (Rosa hybrida ‘Rote Rose’) were grown in six separate growth cabinets with combinations of two light conditions (143 and 407 μ㏖·m<SUP>-2</SUP>·s<SUP>-1</SUP> PAR or photosynthetically active radiation; low and high PAR, respectively) and three night temperature (NT) conditions (10, 14, and 18℃). It was found that increased PAR positively influenced the growth of the plant in relation to carbon accumulation, and the effect of PAR on plant growth depended on NT. As expected, dry mass accumulation rate (DAR) of the plant was greater at high PAR than at low PAR. The DAR at high PAR increased as NT also increased, but at low PAR it was greatest at 14℃ NT. Low NT retarded plant growth so seriously that bud break and flowering were delayed by 90 and 35%, respectively when NT decreased from 18℃to 10℃regardless of PAR. At 10℃NT under low PAR, up to 57% of the shoots were blinded, and only 9.3% of the total accumulated dry mass was distributed to floral buds compared to 23% average in other treatments. The optimal NT for carbon accumulation and light use efficiency (LUE) changed by light intensity. The LUE was higher at low PAR than at high PAR with responses depending on PAR. Under low PAR, it showed a parabolic pattern with the vertex at 14℃ NT, whereas under high PAR it increased linearly with increasing NT. Based on the results, flexible control of the NT based on daily light condition will cut down energy costs while keeping the quality of cut flowers.
#carbon accumulation #distribution #dry mass #energy saving #LUE #stem elongation

목차

Abstract
Introduction
Materials and Methods
Results
Discussion
Literature Cited

참고문헌 (19)

참고문헌 신청
1. [학술지(정기간행물)] - Berninger, E. / 1994 / Development rate of young greenhouse rose plants (Rosa hybrida) rooted from cuttings in relation to temperature and irradiance / Sci. Hort 58 : 235 ~ 251 google schola 2. [학술지(정기간행물)] - Hopper, D.A. / 1991 / Regression models describingRosa hybrida response to day/night temperature and photosynthetic photon flux / J. Amer. Soc. Hort. Sci 114 : 609 ~ 617 google schola 3. [학술지(정기간행물)] - Khayat, E. / 1986 / Effect of different temperature regimes on the assimilation, transport and metabolism of carbon in rose plants / Physiol 67 : 608 ~ 613 google schola 4. [학술지(정기간행물)] - Khayat, E. / / Effect of alternating temperature on dark respiration and C14 export in rose plants / J. Plant Physiol 133 : 199 ~ 202 google schola 5. [학술지(정기간행물)] - 김완순 / 2002 / Exotherm 분석에 의한 절화 장미의 저온 내성 평가 / Horticulture, Environment, and Biotechnology 43 (1) : 73 ~ 76 dbpia

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