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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국원예학회 HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY HORTICULTURE ENVIRONMENT and BIOTECHNOLOGY Vol.49 No.3
발행연도
2008.6
수록면
139 - 144 (6page)

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The adverse effect of lipid peroxidation during flower bud opening in roses was investigated. Experiments were conducted from 2005 to 2007 on two cultivars of cut-roses (Rosa hybrida L.), ‘Grand Gala’ and ‘First Red’ obtained from a commercial grower. Flower stems were harvested at different developmental stages. Petals were separated from seven different petal whorls in flowers (outermost to innermost) of ‘Grand Gala’ and ‘First Red’ at all developmental stages. During the first three stages of flower bud development (S1 - S3) petal membrane remained stable for a considerable period of time. However, at subsequent stages (S4 - S6) membrane leakage increased considerably in both cultivars showing membrane stability index of 48 percent and 38 percent in flower petals of ‘First Red’ and ‘Grand Gala’ respectively. TBARS (Thiobarbiturate reactive substances) content was very low during the first two stages of flower bud development; thereafter, a steep rise was noted in different petal whorls of both cultivars. Lipoxygenase activity showed a progressive rise from stage 1 to stage 6 of flower bud development. Differential LOX (Lipoxygenase) activity was noticed during flower bud opening, a progressive rise during the first three phases, but at a slower pace and a two-fold rise at later stages of development.

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Abstract
Introduction
Materials and methods
Results
Discussion
Literature cited

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