scholarly journals ISOLATION BARRIERS BETWEEN PETUNIA AXILLARIS AND PETUNIA INTEGRIFOLIA (SOLANACEAE)

Evolution ◽  
2011 ◽  
Vol 65 (7) ◽  
pp. 1979-1991 ◽  
Author(s):  
Alexandre Dell’Olivo ◽  
Maria Elena Hoballah ◽  
Thomas Gübitz ◽  
Cris Kuhlemeier
Keyword(s):  
Petunia Axillaris ◽  
Petunia Integrifolia

scholarly journals Temperature and Photoperiod Influence Flowering and Morphology of Four Petunia spp.

HortScience ◽  
2010 ◽  
Vol 45 (3) ◽  
pp. 365-368 ◽  
Author(s):  
Ryan M. Warner
Keyword(s):  
Base Temperature ◽  
Optimal Temperature ◽  
Flower Bud ◽  
Breeding Programs ◽  
Node Number ◽  
Daily Light Integral ◽  
Long Day ◽  
Light Integral ◽  
Short Days ◽  
Petunia Axillaris

Flowering and morphology of four Petunia Juss. spp. [P. axillaris (Lam.) Britton et al., P. exserta Stehmann, P. integrifolia (Hook.) Schinz & Thell., and P. ×hybrida Vilm.] were evaluated in response to photoperiod and temperature. Photoperiod responses were evaluated under 9-h short days (SD), 9-h photoperiod plus 4-h night-interruption lighting (NI), or a 16-h photoperiod supplemented with high-pressure sodium lamps (16-h HPS). All species flowered earlier under NI than SD and were classified as facultative (quantitative) long-day plants. Increasing the daily light integral within long-day treatments increased flower bud number for P. axillaris only. In a second experiment, crop timing and quality were evaluated in the temperature range of 14 to 26 °C under 16-h HPS. The rate of progress toward flowering for each species increased as temperature increased from 14 to 26 °C, suggesting the optimal temperature for development is at least 26 °C. The calculated base temperature for progress to flowering varied from 0.1 °C for P. exserta to 5.3 °C for P. integrifolia. Flowering of P. axillaris and P. integrifolia was delayed developmentally (i.e., increased node number below the first flower) at 14 °C and 17 °C or less, respectively, compared with higher temperatures. Petunia axillaris and P. integrifolia flower bud numbers decreased as temperature increased, whereas P. ×hybrida flower bud number was similar at all temperatures. The differences in crop timing and quality traits observed for these species suggest that they may be useful sources of variability for petunia breeding programs.

scholarly journals Isolation, characterization, and cross-amplification of microsatellite markers for the Petunia integrifolia (Solanaceae) complex

2011 ◽  
Vol 98 (10) ◽  
pp. e277-e279 ◽  
Author(s):  
Raquel A. Kriedt ◽  
Aline M. C. Ramos-Fregonezi ◽  
Luciano B. Beheregaray ◽  
Sandro L. Bonatto ◽  
Loreta B. Freitas
Keyword(s):  
Microsatellite Markers ◽  
Cross Amplification ◽  
Petunia Integrifolia

Phylogeny and Character Evolution in Nierembergia (Solanaceae): Molecular, Morphological, and Cytogenetic Evidence

2009 ◽  
Vol 34 (1) ◽  
pp. 198-206 ◽  
Author(s):  
Jennifer A. Tate ◽  
M. Cristina Acosta ◽  
Joshua McDill ◽  
Eduardo A. Moscone ◽  
Beryl B. Simpson ◽  
...  
Keyword(s):  
Woody Species ◽  
Herbaceous Species ◽  
Chromosome Counts ◽  
Nucleolar Organizing Regions ◽  
Molecular Phylogenetic ◽  
Cytogenetic Evidence ◽  
Nuclear Its ◽  
Phylogenetic Hypotheses ◽  
Genus One ◽  
Petunia Axillaris

Nierembergia (Solanaceae) contains 21 species found primarily in South America, with one species occurring disjunctly in Mexico. Among other features, a pollination system not found elsewhere in the Solanaceae typifies this genus. In most species, nectaries are absent, but oil-producing elaiophores are present on the corolla limb and these attract oil-collecting bees. Molecular phylogenetic hypotheses based on nuclear ITS and chloroplast rpl16 intron data support the monophyly of Nierembergia, which is sister to a clade composed of Bouchetia plus Hunzikeria. The data reconstruct two clades within the genus: one composed primarily of herbaceous species with broad stigmas and the second containing woody species with crescent-shaped stigmas. Morphological homoplasy is frequent among the species of the herbaceous clade, while the woody clade is morphologically cohesive. Chromosome counts are confirmed and karyotype features are given for 13 Nierembergia species (including six varieties) and for Bouchetia anomala, Leptoglossis linifolia, and Petunia axillaris. The two clades are also supported by karyotypic features: one has asymmetrical karyotypes, small chromosomes, and two chromosome pairs with nucleolar organizing regions (NOR) and the other has symmetrical karyotypes, large chromosomes, and only one NOR.

scholarly journals Distribution of Petunia axillaris Sensu Lato in Uruguay as Revealed by Discriminant Analysis of the Live Plants.

1995 ◽  
Vol 64 (2) ◽  
pp. 381-391 ◽  
Author(s):  
Toshio Ando ◽  
Shinichi Tida ◽  
Hisashi Kokubun ◽  
Yoshihiro Ueda ◽  
Eduardo Marchesi
Keyword(s):  
Discriminant Analysis ◽  
Petunia Axillaris

scholarly journals Morphological characterization of sympatric and allopatric populations of Petunia axillaris and P. exserta (Solanaceae)

2020 ◽  
Vol 192 (3) ◽  
pp. 550-567 ◽  
Author(s):  
Marcelo Costa Teixeira ◽  
Caroline Turchetto ◽  
Renan Maestri ◽  
Loreta B Freitas
Keyword(s):  
Morphological Characterization ◽  
Floral Display ◽  
Pollinator Attraction ◽  
Contact Zones ◽  
Low Genetic Diversity ◽  
Floral Diversity ◽  
Corolla Colour ◽  
Morphometric Analyses ◽  
Hybrid Classes ◽  
Petunia Axillaris

Abstract Floral morphological traits are frequently used to identify species, including those that are closely related and show low genetic diversity, and floral shape and colour are known to play an important role in diversification and species isolation. Floral morphology in Petunia (Solanaceae) is considered a driver of diversification because of its association with pollinators. Here, flower morphology was characterized through morphometric analyses and floral pigments. Our main aim was to determine corolla shape in populations of Petunia axillaris and P. exserta and their natural hybrids and how floral display, size and colour are involved in pollinator attraction. In addition, we investigated floral pigments in P. exserta and different hybrid classes. The results from morphometric analyses revealed that each species has a specific floral shape, independent of the collection site. By contrast, in two contact zones, a mosaic of floral phenotypes was observed with some hybrid classes based on corolla colour being placed close to P. exserta. The results suggest that several generations of hybrids or backcrossing could have given rise to this floral diversity in contact zones.

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