Effect of Planting Density and Harvesting Method on Rose Flower Production

Dambre, P; Blindeman, L.; Labeke, Marie-Christine Van

doi:10.17660/actahortic.1998.513.15

Cited by 4 publications

(3 citation statements)

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“…For all variables, there was a predominant effect of the month of harvest, and a cultivar effect was found only for stem length ( Table 2). The results found in this study are in agreement with the results found in other studies, where increases were observed in the production of floral stems associated to the increase or stabilization of the physical characteristics of roses (KOOL, 1996;DAMBRE et al, 2000;HASSANEIN, 2010;ZANÃO JÚNIOR et al, 2014 Means followed by the same lowercase letter in the column do not differ by Tukey's range test (p<0,05). ns = not significant by ANOVA (p<0,05).…”

Section: Resultssupporting

confidence: 92%

Densidade de plantio em rosas das cultivares 'Avalanche' e 'Carola' em Lages-SC

Bastos¹,

Lerin²,

Allebrandt³

et al. 2017

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The objective of this work was to evaluate the productivity of the Avalanche and Carola roses cultivars, with white and red color, respectively, in three planting densities in the municipality of Lages-SC. The experiment was implemented at the Santa Catarina State University campus (UDESC), spacing 1.0 m between rows and 30, 40 and 50 cm between plants, totaling 168 m² of experiment in a protected environment. During harvesting the stems were cut with the largest possible stem length, leaving one yolk for the next budding. The evaluated variables were: flower stems production per plant, yield per area (floral stems / m²), floral stem mass (g), stem length (cm), floral button length (cm). The treatments consisted of two roseberry cultivars: Avalanche and Carola and three planting densities: 2.2, 2.5 and 3.3 plants per m². In each block, treatments were arranged at random, organized into subdivided plots. The plots were the cultivars and the subplots were the planting densities. Each subplot was composed of six plants, totaling 18 plants per plot and 144 plants throughout the experiment. The density of 3.3 plants / m² increased yield per growing area, without interfering in the quality of the floral stems of the cultivars Avalanche and Carola. The cultivar Carola produces longer flower stems than the cultivar Avalanche.

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Section: Resultssupporting

confidence: 92%

Densidade de plantio em rosas das cultivares 'Avalanche' e 'Carola' em Lages-SC

Bastos¹,

Lerin²,

Allebrandt³

et al. 2017

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“…Similarly, the SAMs were as efficiently induced to flower and were able to differentiate normal and as many floral organs under blue light as under white light. Even though flower initiation is an autonomous process in Rosa (Bredmose & Hansen 1996), which does not require a specific light regime, it is well known that in this plant, unfavourable light conditions such as too low irradiance (Nell & Rasmussen 1979;Maas et al 1995b) can cause the arrest or abortion of flower buds, leading to blind shoots (Dambre et al 2000).…”

Section: Discussionmentioning

confidence: 99%

Blue light effects on rose photosynthesis and photomorphogenesis

et al. 2012

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Through its impact on photosynthesis and morphogenesis, light is the environmental factor that most affects plant architecture. Using light rather than chemicals to manage plant architecture could reduce the impact on the environment. However, the understanding of how light modulates plant architecture is still poor and further research is needed. To address this question, we examined the development of two rose cultivars, Rosa hybrida'Radrazz' and Rosa chinensis'Old Blush', cultivated under two light qualities. Plants were grown from one-node cuttings for 6 weeks under white or blue light at equal photosynthetic efficiencies. While plant development was totally inhibited in darkness, blue light could sustain full development from bud burst until flowering. Blue light reduced the net CO(2) assimilation rate of fully expanded leaves in both cultivars, despite increasing stomatal conductance and intercellular CO(2) concentrations. In 'Radrazz', the reduction in CO(2) assimilation under blue light was related to a decrease in photosynthetic pigment content, while in both cultivars, the chl a/b ratio increased. Surprisingly, blue light could induce the same organogenetic activity of the shoot apical meristem, growth of the metamers and flower development as white light. The normal development of rose plants under blue light reveals the strong adaptive properties of rose plants to their light environment. It also indicates that photomorphogenetic processes can all be triggered by blue wavelengths and that despite a lower assimilation rate, blue light can provide sufficient energy via photosynthesis to sustain normal growth and development in roses.

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“…Planting density and harvesting methods in shoot-bending roses also greatly affected the cut flower productivity (Dambre et al, 2000;Kool and Lenssen, 1997). A high LAI (>3.5) in the bent shoot canopy might reduce the productivity because of mutual shading and a negative carbon balance within the canopy (Pien et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Contribution of Individual Bent Shoot Layers to Cut Flower Productivity in Shoot-bending ‘Asami·Red’ Roses

Doi

Shimomura

Inamoto

et al. 2009

J. Japan. Soc. Hort. Sci.

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We estimated the contribution of individual shoot layers in a multi-layered bent canopy to the cut flower productivity of roses ('Asami·Red'). A two-layered bent shoot canopy was established and upper-or lower-layer bent shoots were replaced with artificial replicas of shoots. Replacing upper-layer shoots with replicas facilitated leaf abscission of lower-layer shoots, resulting in severe reduction in the total dry weight of cut flowers (TDWF) compared with plants having two intact bent shoots. When lower-layer shoots were replaced with replicas, the leaf area of upper-layer shoots increased and consequently the excision of lower-layer shoots had little influence on the TDWF. In another experiment, when a three-layered bent shoot canopy was established and light interception by lower-layer shoots was restricted completely by placing a shading film between two of the three layers, the leaf area of the uppermost shoots increased to compensate for the decreased leaf area due to leaf abscission of lower-layer shoots. The excision of lower-layer shoots resulted in more severe reduction of the TDWF than shading. These results suggest that in a multi-layered bent shoot canopy of roses, upper-layer shoots contribute to cut flower yield of plants, primarily through their current photosynthesis with high light interception. However, lower-layer shoots also contribute to cut flower yield by exporting assimilates retained previously, and hence these shoots should remain on plants until they die spontaneously.

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Effect of Planting Density and Harvesting Method on Rose Flower Production

Cited by 4 publications

References 0 publications

Densidade de plantio em rosas das cultivares 'Avalanche' e 'Carola' em Lages-SC

Densidade de plantio em rosas das cultivares 'Avalanche' e 'Carola' em Lages-SC

Blue light effects on rose photosynthesis and photomorphogenesis

Contribution of Individual Bent Shoot Layers to Cut Flower Productivity in Shoot-bending ‘Asami·Red’ Roses

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