Pollen morphology of<i>Diosma</i>and<i>Coleonema</i>(Rutaceae: Diosminae) and its taxonomic implications

Victor, Janine E.; Wyk, Ben‐Erik Van

doi:10.1080/001731300750044663

Cited by 5 publications

(3 citation statements)

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“…3 in Hartley 2000). Pollen sculpture of Rutaceae is usually reticulate (Barth 1983;Mziray 1992;Victor and Van Wyk 1999a, 1999b, 2000, 2001, but striate pattern is not particularly rare, such as are seen in Orixa (Ikuse 1956;Shimakura 1973;Kurosawa 1991), and in some species in Acmadenia (Victor and Van Wyk 1998), Adenandra (Victor and Van Wyk 1999a) and in Macrostylis (Victor and Van Wyk 2001). Muller (1979) stated that striate tectum pattern occurred very early in angiosperm history (from Aptian age of the Cretaceous), and is widespread in families such as Anacardiaceae, Leguminosae, Sapindaceae and Burseraceae.…”

Section: Pollen Of Skimmia In Rutaceaementioning

confidence: 99%

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Pollen morphology of the genus Skimmia (Rutaceae) and its taxonomic implications

2008

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Pollen morphology of the genus Skimmia was studied. Of six species of the genus, five species were investigated by light microscopy and scanning electron microscopy. Pollen grains of Skimmia had striate to striate-reticulate sculpture and variable aperture number (3-7), and these characters differed from even the phylogenetically closest relatives such as Dictamnus and Casimiroa which have 3-colporate pollen grains with reticulate exine. In Skimmia laureola, pollen dimorphism is suggested in the aperture number in accordance with the floral system. Pollen grains of Skimmia japonica, a morphologically very variable species, were extensively surveyed covering its whole distribution area. The grains were also striate to striate-reticulate, and the exine sculpture was not different between varieties. However, the aperture number of S. japonica showed a geographical variation ranging from 4 to 6; in Sakhalin, Hokkaido, most part of Honshu and Taiwan, grains with 4-5 apertures were dominant, while in the southern part of Japan, including the Ryukyu Islands and the Izu Islands, those with 5-6 apertures were common.

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Section: Pollen Of Skimmia In Rutaceaementioning

confidence: 99%

“…Aperture numbers of Rutaceae are generally reported as (2)3(4-6)-colporate (Barth 1983;Mziray 1992;Victor and Van Wyk 1999a, 1999b, 2000, 2001. However, pollen grains of many genera of Rutaceae are consistently 3-colporate.…”

Section: Pollen Of Skimmia In Rutaceaementioning

confidence: 99%

Pollen morphology of the genus Skimmia (Rutaceae) and its taxonomic implications

2008

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“…These characters are of great value for palynology, and therefore should be explored further to understand the taxonomy and phylogeny of the group. The pollen morphology of different species of Rutaceae has been described by Erdtman (1952), Sato (1971), Barth (1980Barth ( , 1982Barth ( , 1983Barth ( , 1985, Arregu� ın-S� anchez et al (1986), Roubik and Moreno (1991), Corrêa et al (1992), Mziray (1992), Breis et al (1993), Morton and Kallunki (1993), Victor and Van Wyk (1998, 1999a, 1999b, 2001, Grant et al (2000), Carreira and Barth (2003), Qaiser and Perveen (2005), Fukuda et al (2008), Magalhãese-Silva (2007), Mou and Zhang (2009), Groppo et al (2010Groppo et al ( , 2019Groppo et al ( , 2021, Bruniera et al (2011Bruniera et al ( , 2015Bruniera et al ( , 2021, Cao et al (2014), Radaeski et al (2014), Silva et al (2014), Al-Anbari et al (2015) and Dutra and Gasparino (2018). These studies demonstrated that the family Rutaceae is eurypalynous because of observed differences in the morphology of the pollen grains in different genera.…”

Section: Introductionmentioning

confidence: 98%

Pollen morphology characterization of Dryades Groppo, Kallunki & Pirani, a new genus of Rutaceae, and its phylogenetically related species

2023

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Rutaceae (Sapindales) is represented by approximately 2040 species and 150-170 genera. Conchocarpus is the genus with the highest number of species and is circumscribed by a combination of character states, making it a polymorphic group. A recent study proposed a new genus, Dryades, formed by species formerly positioned in Conchocarpus. This study aims to describe the pollen morphology of Dryades species, comparing it with the palynology of phylogenetically related species, to present data that can characterize the species of Dryades. We analyzed the pollen grains of Dryades species and eight species of the genera Andreadoxa, Angostura, Erythrochiton, Galipea, Rauia and Conchocarpus. The pollen grains were acetolyzed, measured, described qualitatively, and analyzed quantitatively. Illustrations using light microscopy (LM) and scanning electron microscopy (SEM) are presented. Multivariate analysis was performed. The pollen grains are monads, isopolar, medium to very large in size, with subcircular to subtriangular amb, and oblate-spheroidal to prolate shape. The apertures are 3-or 5-colporate, varying in size (very small to very large colpi). The endoapertures are usually lalongate, rarely circular. The pollen grains analyzed are microreticulate, reticulate, macroreticulate, reticulate-baculate, baculate or verrucate-baculate. Both qualitative and quantitative characteristics of pollen grains proved to be important in distinguishing genera and grouping species within genera (in particular, the number of apertures, the length of the ectoaperture, the exine ornamentation and the size of the pollen grains). Dryades species show similarities in pollen morphology to species of related genera such as Andreodoxa, Galipea and especially Rauia. The shape of pollen grains and the number of apertures in Dryades are distinct from those found in Conchocarpus macrophyllus. The pollen data observed in this study confirm the pollen diversity of Rutaceae.

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Class Magnoliopsida (Dicotyledons)

2009

Flowering Plants

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Pollen morphology ofDiosmaandColeonema(Rutaceae: Diosminae) and its taxonomic implications

Cited by 5 publications

References 10 publications

Pollen morphology of the genus Skimmia (Rutaceae) and its taxonomic implications

Pollen morphology of the genus Skimmia (Rutaceae) and its taxonomic implications

Pollen morphology characterization of Dryades Groppo, Kallunki & Pirani, a new genus of Rutaceae, and its phylogenetically related species

Class Magnoliopsida (Dicotyledons)

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