Current status of commercial Calibrachoa cultivars as assessed by morphology and other traits

Kanaya, Takeshi; Watanabe, Hitoshi; Kokubun, Hisashi; Matsubara, Kiyoshi; Hashimoto, Goro; Marchesi, Eduardo; Bullrich, L.; Ando, Toshio

doi:10.1016/j.scienta.2009.10.014

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…The populations are, in general, small, with less than 30 individuals distributed in small patches, which blossom simultaneously and abundantly during the spring (October to December). As with all Calibrachoa species, C. pygmaea presents a vast number of flowers per plant (Kanaya et al 2010).…”

Section: Discussionmentioning

confidence: 99%

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Genetic diversity in Calibrachoa pygmaea (Solanaceae): A hawkmoth-pollinated nightshade from the Pampas

et al. 2019

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Calibrachoa pygmaea is a unique species of Calibrachoa, especially concerning its flower morphology and the environment where it occurs. The species is self-incompatible and is narrowly distributed in wet and flooded fields of the Pampas region. We characterize the genetic diversity of the species based on traditional plastid markers and newly developed nuclear microsatellites to identify drivers that guide its evolution. Our results identified markers that are informative and useful for studying the population structure of C. pygmaea, as well as that of other species of Calibrachoa. Both marker sets were congruent in developing conclusions regarding the evolutionary scenario of C. pygmaea, and revealed that the genetic variability and population structure of the species could be explained by common allele fixation or shared ancestral polymorphism, while its diversification can be attributed mainly to the species' dispersal ability and certain ecological features.

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Section: Discussionmentioning

confidence: 99%

“…All species maintain intercrossing capacity, except inter-subgenera (Watanabe et al 1997). Species in the genus are used for breeding programs as pot plants and landscaping since 1990 (Rice 1997), primarily because of the vast amount of flowers produced per plant and enormous color variety (Kanaya et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Genetic diversity in Calibrachoa pygmaea (Solanaceae): A hawkmoth-pollinated nightshade from the Pampas

et al. 2019

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“…The flower shape can vary tremendously. The morphological variations in the corolla must be determined quantitatively to address questions regarding evolutionary divergence (Gómez et al, 2006 ; Feng et al, 2009 ), genotype-phenotype association (Cui et al, 2010 ; Hsu et al, 2015 ), plant-pollinator interactions (Yoshioka et al, 2005 ; Galliot et al, 2006 ; Gómez et al, 2008 ; van der Niet et al, 2010 ), and breeding selection (Yoshioka et al, 2006 ; Kobayashi et al, 2007 ; Kawabata et al, 2009 ; Kanaya et al, 2010 ). We proposed an approach to quantify the shape variations of corollas in three-dimensional (3D) images by using microcomputed tomography (μCT) and geometric morphometrics (GM).…”

Section: Introductionmentioning

confidence: 99%

Quantifying floral shape variation in 3D using microcomputed tomography: a case study of a hybrid line between actinomorphic and zygomorphic flowers

et al. 2015

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The quantification of floral shape variations is difficult because flower structures are both diverse and complex. Traditionally, floral shape variations are quantified using the qualitative and linear measurements of two-dimensional (2D) images. The 2D images cannot adequately describe flower structures, and thus lead to unsatisfactory discrimination of the flower shape. This study aimed to acquire three-dimensional (3D) images by using microcomputed tomography (μCT) and to examine the floral shape variations by using geometric morphometrics (GM). To demonstrate the advantages of the 3D-μCT-GM approach, we applied the approach to a second-generation population of florist's gloxinia (Sinningia speciosa) crossed from parents of zygomorphic and actinomorphic flowers. The flowers in the population considerably vary in size and shape, thereby served as good materials to test the applicability of the proposed phenotyping approach. Procedures were developed to acquire 3D volumetric flower images using a μCT scanner, to segment the flower regions from the background, and to select homologous characteristic points (i.e., landmarks) from the flower images for the subsequent GM analysis. The procedures identified 95 landmarks for each flower and thus improved the capability of describing and illustrating the flower shapes, compared with typically lower number of landmarks in 2D analyses. The GM analysis demonstrated that flower opening and dorsoventral symmetry were the principal shape variations of the flowers. The degrees of flower opening and corolla asymmetry were then subsequently quantified directly from the 3D flower images. The 3D-μCT-GM approach revealed shape variations that could not be identified using typical 2D approaches and accurately quantified the flower traits that presented a challenge in 2D images. The approach opens new avenues to investigate floral shape variations.

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Flowering ability of commercial Calibrachoa cultivars as compared to that of natural species

Kanaya

Kokubun

Watanabe

et al. 2010

Scientia Horticulturae

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Current status of commercial Calibrachoa cultivars as assessed by morphology and other traits

Cited by 3 publications

References 13 publications

Genetic diversity in Calibrachoa pygmaea (Solanaceae): A hawkmoth-pollinated nightshade from the Pampas

Genetic diversity in Calibrachoa pygmaea (Solanaceae): A hawkmoth-pollinated nightshade from the Pampas

Quantifying floral shape variation in 3D using microcomputed tomography: a case study of a hybrid line between actinomorphic and zygomorphic flowers

Flowering ability of commercial Calibrachoa cultivars as compared to that of natural species

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