Pollen morphology of Rubiaceae Juss. species occurring in an area of caatinga (dryland) vegetation in Bahia State, Brazil

Júnior, Cristiano Eduardo Amaral Silveira; Saba, Marileide Dias; Jardim, Jomar Gomes

doi:10.1590/s0102-33062012000200020

Cited by 9 publications

(10 citation statements)

References 19 publications

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“…Our results agree with those of the author and differ from the descriptions made by Delprete & Cortés (2006) that considered pollen grains H. radula with ornamentation foveolate-perforate sexine. The pollen data of H. teres presented in this study also differ from that described by Silveira-Junior et al (2012) regarding the number of zonocolpate apertures (11) (-12)-four-(-15) (-16) and the echinate-granulate-perforate surface. It is believed that the differences in the ornamentation of the sexine between the present study and the previous ones are justified by the type of microscopy used.…”

Section: Discussioncontrasting

confidence: 97%

“…The species Emmeorhiza umbellata has been described herein as having medium size, oblate spheroidal, eight-(nine) colporate pollen grains and the microreticulate surface. Pire & Cabral (1992), Melhem et al (2003), Delprete & Cortes (2006) and Silveira-Junior et al (2012) studied the E. umbellata pollen grains and the results found here differ from most of the authors cited above for surface (equinateperforate). The results are similar only with those of Silveira-Junior et al (2012) regarding surface (microreticulate).…”

Section: Discussioncontrasting

confidence: 82%

“…Pire & Cabral (1992), Melhem et al (2003), Delprete & Cortes (2006) and Silveira-Junior et al (2012) studied the E. umbellata pollen grains and the results found here differ from most of the authors cited above for surface (equinateperforate). The results are similar only with those of Silveira-Junior et al (2012) regarding surface (microreticulate). Melhem et al (2003) described the pollen grains of the Mitracarpus species as medium, oblate spheroidal three-four-six-seven-nine-colpate, granulate exine.…”

Section: Discussioncontrasting

confidence: 82%

“…Denscantia cymosa was the only species that presented three endoapertures by ectoaperture. This species was analyzed by Cabral (1985), Pire & Cabral (1992) and Silveira-Junior et al (2012). The results here obtained (sexine reticulate) differed from the previous analyzes by regarding the surface da sexine (granulate-perforate).…”

Section: Discussioncontrasting

confidence: 59%

“…The pollen grains of Hexasepalum were characterized by Silveira-Junior. et al (2012) who also analyzed the species and the results found here were similar regarding ornamentation of sexine and aperture number.…”

Section: Discussionmentioning

confidence: 99%

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Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, Brazil

et al. 2020

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Section: Discussioncontrasting

confidence: 97%

Section: Discussioncontrasting

confidence: 82%

Section: Discussioncontrasting

confidence: 82%

Section: Discussioncontrasting

confidence: 59%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, Brazil

et al. 2020

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Pollen morphology and its taxonomic significance of the genus Crucianella L. (Rubiaceae) in Iran

Parsapanah

Faghir

2021

Feddes Repertorium

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The Pollen morphology of nine species of Crucianella L. and ten subspecies of C. gilanica representing two sections: Roseae and Crucianella, was investigated using light microscopy (LM) and scanning electron microscopy (SEM). All the studied species (except for C. angustifolia) are palynologically described here for the first time. The results revealed considerable pollen character variation among the studied species. The pollen grains are monads, isopolar, radial symmetrical and relatively small. The largest pollen grains were observed in C. angustifolia (P = 24.12 µm, E = 26.04 µm), while the smallest pollen was found in C. gilanica subsp. carduchorum (P = 16.32 µm, E = 12.57 µm). The outline pollen grains varied from subcircular to circular in polar view and elliptical to quadrangular and circular in equatorial view. The shape of pollen changed from spheroidal to oblate‐spheroidal, prolate‐spheroidal, suboblate, subprolate and prolate. The pollen grains are zonocolpate and their number of colpi ranges from 6 to 10. The results showed five different types of sexine ornamentation: perforate, reticulate, microreticulate, microfoveolate and psilate. The sexine of all examined specimens is covered with microspines. The current survey shows that the pollen morphological characters of the studies species are taxonomically informative and may provide good help in identification purposes. We used multivariate analysis to determine the potential contribution of palynological data to the species relationships. The result of cluster analysis and principal component analysis showed pollen morphological affinities between the two studied sections.

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Integrating morpho pollinic traits for systematic classification of rubiaceous species and conservation implications

Ullah,

Zafar,

Ahmad

et al. 2024

Genet Resour Crop Evol

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Pollen morphology of Rubiaceae Juss. species occurring in an area of caatinga (dryland) vegetation in Bahia State, Brazil

Cited by 9 publications

References 19 publications

Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, Brazil

Pollen morphology of some species of Spermacoceae s.s. (Rubiaceae) of the Atlantic Forest, Rio de Janeiro, Brazil

Pollen morphology and its taxonomic significance of the genus Crucianella L. (Rubiaceae) in Iran

Integrating morpho pollinic traits for systematic classification of rubiaceous species and conservation implications

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