On Terminology in Pollen and Spore Morphology

Erdtman, G.; Vishnu-Mittre,

doi:10.1080/00173135809436053

Cited by 22 publications

(6 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Las esporas de Gleicheniaceae son aclorofilicas, homospóricas, fotoblásticas positivas y de germinacion relativamente lenta como se ha reportado en otros trabajos (Tryon & Tryon, 1982;Kramer, 1990;Tryon & Lugardon, 1991); en cuanto a la forma de las esporas se encontraron dos grupos; con esporas triletes en Dicranopteris flexuosa y Diplopterygium bancroftii, y con esporas monoletes en Gleichenella pectinata, Sticherus bifidus, S. brevipubis, S. palmatus y S. underwoodianus, lo que coincide con lo reportado en la literatura (Erdtman & Sorsa, 1971;Tryon & Tryon, 1982;Tryon & Lugardon, 1991;Velázquez-Montes, 2012). Así mismo, coincidimos con Punt, Hone, Blackmore, Nilsson y Le (2007), en la ornamentación escábrida en Dicranopteris flexuosa y psilada con escasos cuerpos de Ubisch en Diplopterygium bancroftii como se ha reportado anteriormente por Lugardon (1974), Tryon y Lugardon (1991) y Velázquez-Montes (2012).…”

Section: Discussionunclassified

Desarrollo de los gametofitos de especies mexicanas de Gleicheniaceae

Farfán-Santillán

Mendoza-Ruíz

Pérez-García

et al. 2017

RBT

View full text Add to dashboard Cite

Gametophyte development in Mexican species of Gleicheniaceae ferns. In Mexico, the Gleicheniaceae family is represented by different species such as Dicranopteris flexuosa, Diplopterygium bancroftii, Gleichenella pectinata, Sticherus bifidus, S. brevipubis, S. palmatus and S. underwoodianus. Currently, few studies have described the gametophytes of some species in this family, and our objective was to contribute to the knowledge, and to describe and compare different aspects of their germination, gametophyte development, and to determine if the prothallus characters are useful for taxonomic delimitations in the group. For this purpose, specimens and spores of each taxon were collected in the field, spores were sown in Petri dishes containing agar and Thompson nutrient medium, and grown in a plant growing chamber under controlled conditions of light (12 hr light/darkness), (50 %) humidity, and temperature (18 °C night, 25 °C day). Additionally, observations of fresh materials were made and photomicrographs were taken using both optical and scanning electron microscopes. Our observations allowed distinguishing two types of germination Gleichenia and Cyathea; and three types of prothallial development Marattia, Osmunda and Drynaria. Gametangia presented more than three cells, and this is considered a primitive feature by other authors. As some variations in the germination type were observed and have not previously been reported in the literature for this family, and because of the heterogenity in the patterns of the prothallial cell development, and gametangia of more than four cells, it is important to broaden the study to other species, in order to determine the taxonomic value of the morphological characters of the gametophyte, as well as to determine if these variations are present in other species of the family. Rev. Biol. Trop. 65 (3): 939-952. Epub 2017 September 01.

show abstract

Section: Discussionunclassified

Desarrollo de los gametofitos de especies mexicanas de Gleicheniaceae

Farfán-Santillán

Mendoza-Ruíz

Pérez-García

et al. 2017

RBT

View full text Add to dashboard Cite

show abstract

“…The results presented here examine only some of the more superficial features that may be of direct use in this investigation. The terminology is that of Erdtman (1958), although slight modifications are necessary. Pancolpate pollen occurs in two types.…”

Section: Pollenmentioning

confidence: 99%

A Review of the Family Portulacaceae

Carolin¹

1987

Aust. J. Bot.

106

View full text Add to dashboard Cite

A number of attributes that has proved useful to delimit subfamilial taxa within the Portulacaceae are critically assessed and some little used ones are introduced. The attributes are polarised by an outgroup comparison and a Wagner tree constructed. Some reversals which occur on this tree are considered unacceptable and branches are moved to eliminate this factor, although a longer tree, in terms of character state changes, is produced. A phylogenetic sequence is proposed on this basis and a new classification of the family attempted. On the basis of these results it is suggested that: (1) the genus Calandrinia s.

show abstract

“…For each cultivars and rootstocks, 35 pollen grains were employed to determine the pollen size and the following morphological traits were measured: (i) length of pollen along the polar axis (P); (ii) length of pollen along the equatorial diameter (E); (iii) ratio of polar axis to equatorial diameter (P/E); (iv) diameter of perforations (DP); (v) number of perforations in 5 µm × 5 µm (PN); (vi) width of muri (WM); (vii) number of muri in 5 µm × 5 µm (MN); (viii) distance between muri (DM); (ix) width of grooves (WG); (x) length of colpi (C). The terminology follows that of Erdtman [18,19] and Hesse et al [20].…”

Section: Methodsmentioning

confidence: 99%

Investigation on the pollen morphology of traditional cultivars of Prunus species in Sicily

Geraci¹,

Polizzano²,

Marino³

et al. 2012

Acta Soc Bot Pol

View full text Add to dashboard Cite

In this study pollen grains of 13 cultivars and 3 rootstocks belonging to 5 species (P. armeniaca, P. domestica, P. dulcis, P. persica, P. avium) of the genus Prunus collected from North-East Sicily were examined for the micromorphological characterization through the scanning electron microscopy (SEM). The length of polar axis (P) and the equatorial diameter (E) of grain, P/E ratio, the length of colpi (C), diameter of perforations (DP) and the number of perforations in 25 µm 2 (PN), the width of muri (WM), the distance between muri (DM) and their number in 25 µm 2 (MN), the width of grooves (WG) were measured and their variation was compared among studied taxa. Moreover multivariate statistical analysis was carried out to distinguish morphometric information from measured parameters. All pollen grains are trizonocolpate, isopolar, medium-large sized and their shape varies from prolate to perprolate. Regarding outline pollen grains are subtriangular in polar view and elliptic in equatorial view. Exine sculpturing is striate with perforations on grain surface. The arrangement of ridges appears roughly parallel but too sloped (sometimes curved) compared to polar axis, or branched and oriented in different directions, or perfectly parallel or more irregular with bifurcated ridges often sinuous. The analyses showed a great variability (particularly in P. domestica cultivars) related in some cases to the diversity in the morphological features of the leaves and the fruits of the investigated entities. Keywords: pollen morphology, SEM, Sicilian Prunus, species, cultivarsActa Societatis Botanicorum Poloniae

show abstract

On Terminology in Pollen and Spore Morphology

Cited by 22 publications

References 0 publications

Desarrollo de los gametofitos de especies mexicanas de Gleicheniaceae

Desarrollo de los gametofitos de especies mexicanas de Gleicheniaceae

A Review of the Family Portulacaceae

Investigation on the pollen morphology of traditional cultivars of Prunus species in Sicily

Contact Info

Product

Resources

About