Interspecific and intraspecific variation in corolla tube length in Pedicularis species achieved by both cell anisotropy and division

2017 ◽  
Vol 55 (3) ◽  
pp. 208-214
Author(s):  
Xiang-Ping Wang ◽  
Shuang-Quan Huang
Keyword(s):  
Intraspecific Variation ◽  
Corolla Tube ◽  
Tube Length ◽  
Interspecific And Intraspecific Variation ◽  
Cell Anisotropy

Morph-specific correlations between floral traits in a distylous Ophiorrhiza napoensis (Rubiaceae) population in southern China

2001 ◽  
Vol 17 (5) ◽  
pp. 719-728 ◽  
Author(s):  
HIROSHI KUDOH ◽  
TAKASHI SUGAWARA ◽  
SUGONG WU ◽  
JIN MURATA
Keyword(s):  
Southern China ◽  
Principal Component ◽  
Corolla Tube ◽  
Floral Traits ◽  
Evergreen Forest ◽  
Tube Length ◽  
Multiple Traits ◽  
Floral Trait ◽  
Subtropical Evergreen Forest ◽  
Positive Correlations

Floral trait correlations were compared between the two flower morphs of a distylous Ophiorrhiza napoensis population in a subtropical evergreen forest at the Defu Natural Animal Preserve, Guangxi, China. Common principal component analyses indicated that overall patterns in correlations among floral traits were morph specific in the study population. Strong positive correlations (r > 0.9) between anther height and corolla-tube length were found in both morphs. Stigma height correlated positively with corolla-tube length in the long-styled morph (r = 0.843), but not in the short-styled morph (r = −0.018). Flower-morph-specific correlation suggests that natural selection by pollinators has moulded trait covariance among floral traits. Because morph-specific correlations are expressed as the patterns of within-morph variation among multiple traits, putative genes responsible for the stigma-corolla tube correlation should not link to the supergene for sex-organ reciprocity between the morphs, but their expression is limited in the long-styled morph.

scholarly journals Butter fly Feeding Preferences of Lantana camara Cultivars and Lantana montevidensis ‘Weeping Lavender’ in the Landscape and Nectar Characteristics

2008 ◽  
Vol 26 (1) ◽  
pp. 9-18
Author(s):  
Laura L. Bruner ◽  
Donald J. Eakes ◽  
Gary J. Keever ◽  
James W. Baier ◽  
Celia Stuart Whitman ◽  
...  
Keyword(s):  
Growth Index ◽  
Flower Color ◽  
Corolla Tube ◽  
Lantana Camara ◽  
Cultivar Differences ◽  
Tube Length ◽  
Butterfly Species ◽  
Nectar Production ◽  
Design Data ◽  
Nectar Volume

Abstract In landscape studies conducted in 2002 and 2003, Lantana camara (L.) ‘New Gold’ and ‘Radiation’ were visited by native butterflies to a greater extent than the remaining eight lantana in the studies. Other lantana visited preferentially but not as consistently included L. camara ‘White Doves’, ‘Firewagon’, ‘Confetti’, and Lantana montevidensis (Spreng.) ‘Weeping Lavender’. In general, the lowest visitation was experienced by L. camara ‘Cherry’ and ‘Carlos’. Total visit duration by one randomly selected butterfly was greater for ‘New Gold’, ‘Radiation’, ‘Firewagon’, and ‘White Doves’ than the remaining lantana. Plant characteristics including inflorescence number, number of flowers per inflorescence, percentage of yellow flowers per inflorescence, growth index, flower morphology, and flower color characteristics differed among cultivars. Cultivar differences that consistently correlated with visitation preferences were inflorescence number in 2002 and 2003, flower number per inflorescence in 2003, percentage of yellow flowers per inflorescence in 2002 and 2003, and growth index in 2003. Flower lightness and flower chroma correlated sporadically with visitation in late September and October 2002 and 2003. Percentage light reflectance of flowers for the wavelengths of green, yellow, orange, and red correlated with visitation in 2003. Based on correlation analysis, the cultivar characteristics that did not contribute to visitation differences included inflorescence width, corolla width, and corolla tube length. In a separate study conducted in 2003 using the same lantana as in the visitation study, nectar volume, carbohydrate composition, and sucrose and fructose concentrations differed among inflorescences. Of ten Lantana evaluated, ‘Carlos’ and ‘Confetti had the largest inflorescence nectar volumes combined from nine flowers while ‘New Gold’, ‘White Doves’, and ‘Weeping Lavender’ had the smallest. The ratio of sucrose to hexose (fructose and glucose) in nectar from ‘Weeping Lavender’, ‘White Doves’, and ‘New Gold’ was greater than that of the remaining Lantana. The lowest ratios of sucrose to hexose were found for ‘Irene’, ‘Hot Country’, and ‘Carlos’, while similar to ‘Cherry’ and ‘Radiation’. The sucrose to hexose ratio for recently opened inner flowers was double that of middle and outer flowers. Sucrose and total sugar concentrations were greatest in recently opened inner flowers compared to middle and outer flowers. While direct comparison to the 2002 and 2003 studies of butterfly visitation preferences was not possible due to experimental design, data trends suggest a possible relationship between sugar composition, inflorescence nectar production and visitation from native butterfly species.

Corolla Tube Length Studies in Red Clover 1

1950 ◽  
Vol 42 (1) ◽  
pp. 1-8 ◽  
Author(s):  
T. M. Starling ◽  
C. P. Wilsie ◽  
N. W. Gilbert
Keyword(s):  
Red Clover ◽  
Corolla Tube ◽  
Tube Length

Larval anatomy of Andean tadpoles of Telmatobius (Anura: Ceratophryidae) from Northwestern Argentina

Zootaxa ◽  
2008 ◽  
Vol 1938 (1) ◽  
pp. 40-60 ◽  
Author(s):  
M. FLORENCIA VERA CANDIOTI
Keyword(s):  
Intraspecific Variation ◽  
Characteristic Pattern ◽  
Species Discrimination ◽  
Shape Variation ◽  
Geometric Morphometric ◽  
Northwestern Argentina ◽  
Preliminary Results ◽  
Internal Morphology ◽  
Morphometric Methods ◽  
Interspecific And Intraspecific Variation

In this paper I study the oral, buccopharyngeal, and musculoskeletal configuration in tadpoles of nine Telmatobius species from Northwestern Argentina (T. atacamensis, T. ceiorum, T. laticeps, T. oxycephalus, T. pinguiculus, T. pisanoi, T. cf. schreiteri, T. scrocchii, and T. stephani; N = 30, Gosner stages 31–36). Specimens were prepared according to standard clearing and staining protocols; additionally, I applied landmark and outline-based geometric morphometric methods in order to quantify shape variation in chondrocrania, hyobranchial skeletons, and suprarostral cartilages. Although preliminary, results show a marked morphological uniformity on the analyzed levels, and overlapping interspecific and intraspecific variation, which renders species discrimination difficult. Some distinctive traits for the genus are bicuspidate buccal spurs, peculiar arrangement of buccal roof and floor papillae, tetrapartite suprarostral, adrostral cartilages, a lateral slip of the m. subarcualis rectus II-IV invading branchial septum IV, and a characteristic pattern of muscles inserted on the diaphragm. The conservative larval internal morphology in this genus could be explained by a recent speciation and a development possibly characterized by the postmetamorphic appearance of specific features.En este trabajo estudio la morfología oral, bucofaríngea y musculoesquelética de larvas de nueve especies de Telmatobius del Noroeste argentino (T. atacamensis, T. ceiorum, T. laticeps, T. oxycephalus, T. pinguiculus, T. pisanoi, T. cf. schreiteri, T. scrocchii y T. stephani; N = 30, estadios de Gosner 31–36). Los especímenes se prepararon siguiendo protocolos clásicos de transparentación y coloración diferencial; adicionalmente, apliqué métodos de morfometría geométrica basada en landmarks y contornos para cuantificar la variación de formas en condrocráneos, esqueletos hiobranquiales y cartílagos suprarostrales. Aunque de carácter preliminar, los resultados muestran una notable uniformidad morfológica en los niveles analizados, y una variación intraespecífica que se superpone con la interespecífica, dificultando la distinción entre especies. Algunos rasgos distintivos del género son un par de espolones bucales bífidos, un arreglo particular de las papilas del techo y piso bucales, suprarostral tetrapartito, adrostrales, un haz del m. subarcualis rectus II-IV invadiendo el septo branquial IV, y un patrón aparentemente característico de los músculos insertos en el diafragma. La morfología larval interna conservadora en el género podría explicarse por una especiación reciente y un desarrollo posiblemente caracterizado por la aparición postmetamórfica de los rasgos específicos.

Quantitative analysis of interspecific and ontogenetic variation in Osteoglossum species (Teleostei: Osteoglossiformes: Osteoglossidae)

Zootaxa ◽  
2006 ◽  
Vol 1239 (1) ◽  
pp. 49 ◽  
Author(s):  
MARIA E.C. LEAL ◽  
VIVIANNE B. DE SANT-ANNA
Keyword(s):  
Principal Component Analysis ◽  
Quantitative Analysis ◽  
Intraspecific Variation ◽  
Principal Component ◽  
Component Analysis ◽  
Growth Trajectories ◽  
Ontogenetic Variation ◽  
Morphometric Characters ◽  
Interspecific And Intraspecific Variation

Patterns of interspecific and intraspecific variation were investigated on samples of postembryos, juveniles, and adults of the two species of the osteoglossid genus Osteoglossum (O. bicirrhosum and O. ferreirai). Twenty-two morphometric characters were analyzed, utilizing principal component analysis (PCA) that discriminate ontogenetic classes and between species. The results showed differences in both categories. Morphometric characters related to dorsal and anal fin lengths proved to be the most important in taxonomic recognition. The comparison of growth trajectories for these characters showed that growth offset for O. bicirrhosum overlaps with growth onset for O. ferreirai, which may be indicative of a peramorphic morphology in the latter species.

Variation in morphology of Teucrium polium aggr. populations in Bulgaria

2010 ◽  
Vol 5 (6) ◽  
pp. 880-887 ◽  
Author(s):  
Dolja Pavlova ◽  
Magdalena Vasileva
Keyword(s):  
Corolla Tube ◽  
Leaf Length ◽  
Tube Length ◽  
Serpentine Soils ◽  
Stem Height ◽  
Multivariate Statistical ◽  
Discriminant Ability ◽  
Character Variation ◽  
Teucrium Polium ◽  
Vegetative Characters

AbstractThe aim of this study was to investigate natural serpentine and non-serpentine populations of Teucrium polium aggr. and to document the differences in their morphological traits, as well as estimate which characters are most likely contributing to differentiation of the populations. Nine populations distributed both on and off serpentine soils were investigated, and 12 different morphological features of 270 individuals were studied by univariate and multivariate statistical analyses. The results did not demonstrate clear delimitation of the serpentine from the non-serpentine populations. Using these ecotypes as classification factors in the discriminant analysis, it can be stated that stem height, leaf length in the fifth leaf pair, internode length between the fourth and the fifth leaf pairs, and corolla tube length are features with the greatest discriminant ability. The character variation was generally higher for the vegetative features, while reproductive features failed to demonstrate clear differences. The similarity groupings indicated by the cluster analysis were synchronous with groups distinguished by both the discriminant and PCA analyses. Significant differences were observed between sets of vegetative characters in all populations investigated.

Preparation and Use of Voucher Specimens for Documenting Research in Weed Science

2007 ◽  
Vol 21 (4) ◽  
pp. 1101-1108 ◽  
Author(s):  
Richard Carter ◽  
Charles T. Bryson ◽  
Stephen J. Darbyshire
Keyword(s):  
Intraspecific Variation ◽  
Scientific Method ◽  
Weed Science ◽  
Voucher Specimens ◽  
Plant Sciences ◽  
Herbarium Collections ◽  
Interspecific And Intraspecific Variation

Voucher specimens and herbarium collections provide the foundation for many aspects of research in the plant sciences. Available for study and verification by contemporary and future workers, voucher specimens promote reproducibility in scientific method because permanent records document identification, distribution, and interspecific and intraspecific variation of species. The utility and importance of voucher specimens and herbarium collections in supporting research in weed science are discussed, and the collection, preparation, documentation, storage, and shipment of voucher specimens are detailed.

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