Using architectural analysis to compare the shape of two hybrid tea rose genotypes

Morel, P.; Galopin, Gilles; Donès, Nicolas

doi:10.1016/j.scienta.2008.11.039

Cited by 27 publications

(35 citation statements)

References 11 publications

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“…For clone 352, the VGU1 of A2 axes are characterized by the specific distribution of their number of metamers, with very short and long VGU1. A similar distribution was observed in the garden rose for the number of metamers on the axis, with two types of axes, short and long (Morel et al 2009). The two clones can also be differentiated by GU branching, with a higher proportion of branched GU for clone 188.…”

Section: Discussionsupporting

confidence: 74%

“…Only three descriptors were used-upright, climbing and hanging-whereas overall plant shape is one of the major components of visual quality for the ornamental potted plants. It is therefore necessary to develop a more in-depth and objective approach, similar to the one proposed by Morel et al (2009) for the garden rose, based on an analysis of quantitative parameters related to the axes, growth units, metamers, and the links between these parameters (succession and branching).…”

Section: Introductionmentioning

confidence: 99%

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Architectural and genetic characterization of Hydrangea aspera subsp. aspera Kawakami group, H. aspera subsp. sargentiana and their hybrids

Crespel

Morel²,

Galopin

2011

Euphytica

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Hydrangea macrophylla (Thunb.) Ser. and H. paniculata Sieb. are the two most economically important species within the genus Hydrangea, and have been used as ornamental garden plants for a long time. However, other species such as H. aspera D. Don are of horticultural interest, particularly for the color of their inflorescences and plant shape. This species is composed of four sub-species and has previously been characterized both genetically and morphologically. The previous morphological characterization was qualitative, but was based mainly on leaf and inflorescence parameters outlined by UPOV, and provided little information about plant shape. To better characterize the shape of H. aspera, an architectural analysis was applied to the two most distantly related sub-species at the cytogenetic level:subsp. sargentiana (Redher) E.M. McClint. (clone 188) and subsp. aspera Kawakami group (clone 352). This method made it possible to reveal significant differences between these clones, both at the axis and the growth unit (GU) scale, in agreement with the high level of genetic differentiation (Jaccard dissimilarity index equal to 0.97) revealed between the two clones by Inter simple sequence repeats markers. Because this method is difficult to apply to a large population of individuals, a qualitative architectural characterization was tested on ten progenies derived from hybridization of the two clones, on the basis of their most discriminating architectural components. The hybrid nature of the progeny was confirmed by the architectural analysis. The architectural components of the hybrids are therefore a combination of those of the parents, with a predominance of clone 352, the female parent. Architectural differences between hybrids were clearly revealed by the length of the first vegetative GU (VGU1), the presence or the absence of VGU2 and the length of the floral GU of the A2 axis, and GU branching, allowing us to define five architectural profiles. These differences are supported by the average Jaccard dissimilarity index (0.33). This method, based on a qualitative description of the main architectural components of the plant, proved to be useful for characterizing the shape of H. aspera subsp. sargentiana, and subsp. aspera Kawakami group, and their hybrids. It could be extended to other sub-species of H. aspera and to their respective hybrids, providing an efficient L. Crespel (

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Section: Discussionsupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Architectural and genetic characterization of Hydrangea aspera subsp. aspera Kawakami group, H. aspera subsp. sargentiana and their hybrids

Crespel

Morel²,

Galopin

2011

Euphytica

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“…1 for a frame still of this video). To obtain these virtual rose bushes, data from an architectural analysis of five-month old 'Radrazz' (a Rosa hybrida cultivar marketed under the name of Knock Out Ò ) cultivated under controlled non-restrictive conditions were used (Morel et al, 2009). These data made it possible to create a matrix for a normalized plant that combine according to the location of the buds: (i) the probability of bud break; and (ii) the probability that the bud break give a short or long axis.…”

Section: Sample Collection: Rotating Virtual Rose Bush Videosmentioning

confidence: 99%

“…Since data of Morel et al (2009) were obtained from plants of the same cultivar grown in the same conditions, the modeling process reflects thus the architectural variability within a similar crop.…”

Section: Sample Collection: Rotating Virtual Rose Bush Videosmentioning

confidence: 99%

“…This quality stands on visual characteristics tightly linked to a 3D component that is the plant architecture which results from the characteristics and the spatial organization of the aerial organs (Boumaza, DemotesMainard, Huché-Thélier, & Guérin, 2009;Morel, Galopin, & Donès, 2009). Impacts of growing practices on some architectural parameters are well-known for numerous plant species.…”

Section: Introductionmentioning

confidence: 99%

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Assessing the visual aspect of rotating virtual rose bushes by a labeled sorting task

Garbez

Galopin

Sigogne

et al. 2015

Food Quality and Preference

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Aesthetics is one of the major parameters for consumers when buying a rose bush. Therefore, managing this quality is important for agronomists. Tools are needed to assess visual characteristics and to find links with architectural plant parameters. Sensory analyses were developed using real plants and photographs as stimuli. With technology and modeling improvements, using virtual plants could presents numerous advantages. This study demonstrated the feasibility of using rotating virtual rose bush videos as stimuli for a labeled sorting task. The virtual rose bush reflected a natural within-crop variability of one cultivar based on bud breaks location and axes length. Two panels of subjects closely linked to the horticulture sector sorted and described 40 rotating virtual rose bush videos. Non-metric Multidimensional Scaling (MDS) results for both panels were similar and allowed us to highlight five groups of virtual rose bushes with their specific sensory characteristics and their own most representative products using a combination of the paragons and the most typical products. This approach revealed that subjects detected high visual differences between products, and that by using rotation, they were able to integrate 3D properties about variations around plant facets. Finally, a labeled sorting task is a powerful method for preliminary exploration of the visual aspect of virtual plants.

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Identification of relevant morphological, topological and geometrical variables to characterize the architecture of rose bushes in relation to plant shape

et al. 2013

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EuphyticaPlant shape is a major component of the visual quality of ornamental plants. It is the result of their architectural construction. It can be analyzed by breaking down the plant into entities (axis, metamer) that can be characterized morphologically, topologically and geometrically. Eight bush rose cultivars were selected for their contrasting shapes (from upright to spreading) and their architecture was digitized at two scales, the plant and the axis, differentiating between short and long axes. Thirty-five variables were measured. Measurement acquisition is nevertheless tedious and time-consuming and not really compatible with an analysis involving a large number of individuals. To diminish these constraints, our approach aimed at reducing the number of variables measured, limiting ourselves to the ones most relevant for describing the architecture. A selection of variables was made using the following criteria: to represent the different categories of variables describing the plant architecture; to explain the variability observed; to present the weakest correlation between them. Seven variables were selected: at the plant scale, the number of determined axes, the number of long axes of order 3 and the branching order number; at the long axis scale, the number of metamers and the length of the axis; and at the short axis scale, the basal diameter of the axis and the branching angle of the cord in relation to the vertical axis. Four architectural profiles were differentiated based on these seven variables. Moreover, a high correlation was revealed between some of these architectural variables and a shape descriptor

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Using architectural analysis to compare the shape of two hybrid tea rose genotypes

Cited by 27 publications

References 11 publications

Architectural and genetic characterization of Hydrangea aspera subsp. aspera Kawakami group, H. aspera subsp. sargentiana and their hybrids

Architectural and genetic characterization of Hydrangea aspera subsp. aspera Kawakami group, H. aspera subsp. sargentiana and their hybrids

Assessing the visual aspect of rotating virtual rose bushes by a labeled sorting task

Identification of relevant morphological, topological and geometrical variables to characterize the architecture of rose bushes in relation to plant shape

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