Pollen morphology and infrageneric classification of<i>Alstroemeria</i>L. (Alstroemeriaceae)

Sarwar, A.K.M. Golam; Hoshino, Yoichiro; Araki, Hideki

doi:10.1080/00173134.2010.529503

Cited by 12 publications

(13 citation statements)

References 23 publications

(56 reference statements)

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“…This may give additional support to the supposition that (micro-)reticulate exine sculptures might be a plesiomorphic character state for Bomarea and the coarsely rugulate and finely rugulateperforate or psilate-perforate exine sculptures might have evolved independently more than once (Alzate et al 2008;Sarwar et al 2015). These results may also confirm the major evolutionary trend in exine sculpture in the family Alstroemeriaceae from reticulate through rugulate-psilate to striate-reticulate, or vice-versa (Aagesen & Sanso 2003;Sarwar et al 2010;2015).…”

Section: Discussionsupporting

confidence: 74%

“…Polliniferous materials used in this investigation were taken from dried specimens from the herbaria K, MO, MOL, NY, and USM. Herbarium abbreviations follow the Index Herbariorum (Thiers 2007 The pollen parameters studied and the LM and SEM preparation methods used follow Sarwar et al (2010). Measurements were taken from at least 30 randomly selected grains from each specimen (Tab.…”

Section: Methodsmentioning

confidence: 99%

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Pollen morphology and its taxonomic significance in the genus Bomarea Mirb. (Alstroemeriaceae) - II. Subgenus Bomarea

2015

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Pollen morphology of 52 species (out of c. 79) of the Bomarea subgenus Bomarea was examined using light microscopy and scanning electron microscopy (SEM), or using SEM alone. The studied species of Bomarea were stenopalynous, characterized by large, oblate, monosulcate monads with reticulate exine sculpture in most species. Wide variation was observed in quantitative palynological features. The studied taxa were divided into four major groups based on exine ornamentation observed under SEM: microreticulate, reticulate, coarsely rugulate, and psilate-perforate. The reticulate exine sculpture may be a plesiomorphic character state for the genus Bomarea, and the coarsely rugulate and finely rugulate-perforate or psilate-perforate exine sculptures may have evolved independently more than once. In agglomerative hierarchical clustering (AHC) analyses of the genus Bomarea using quantitative pollen data, the studied species were distributed in either two (similarity-based) or four (dissimilarity-based) major clusters. Neither the recent molecular phylogenetic analyses nor the AHC analyses of Bomarea have recovered clades/clusters that represent traditionally recognized subgeneric taxa for the genus. Therefore, the most reliable infrageneric classification of Bomarea can be achieved by combining morphological, palynological, and molecular data from more extentive sampling of all the species.

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Section: Discussionsupporting

confidence: 74%

Section: Methodsmentioning

confidence: 99%

Pollen morphology and its taxonomic significance in the genus Bomarea Mirb. (Alstroemeriaceae) - II. Subgenus Bomarea

2015

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“…Along with other characters, the differences in pollen grain wall structure and exine ornamentation (sculpture) are found to be valuable characteristics for distinguishing between Alstroemeria and Bomarea (Sanso & Xifreda 2001;Sarwar et al 2010), and the close relationship between these two genera has also been confirmed by molecular data (Aagesen & Sanso 2003). Based on morphological features, the genus Bomarea is traditionally divided into three to four subgenera: Baccata (five spp.…”

Section: Introductionmentioning

confidence: 80%

“…The preparation of pollen grains for LM and SEM, and pollen parameters studied follow Sarwar et al (2010). Pollen slides of all collection are deposited at the Hokkaido University Museum, Sapporo, Japan.…”

Section: Methodsmentioning

confidence: 99%

“…Pollen morphology of Bomarea has also been included in some taxonomic papers and/or as a part of regional flora (Elsik & Thanikaimoni 1970;Heusser 1971;Neuendorf 1977;Schulze 1978;Kosenko 1994;Rudall et al 2000;Rojas & Gutiérrez 2001;Sanso & Xifreda 2001;Hofreiter 2006;Alzate 2007). As a part of the comprehensive pollen morphological survey on the family Alstroemeriaceae, pollen morphology of the genus Alstroemeria has already been published (Sarwar et al 2010). We present herein pollen morphological features of three subgenera, viz.…”

Section: Introductionmentioning

confidence: 99%

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Pollen morphology and its taxonomic significance in the genus Bomarea Mirb. (Alstroemeriaceae) - I. Subgenera Baccata, Sphaerine, and Wichuraea

2015

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Pollen morphology of 24 of the 33 species of three Bomarea subgenera, Baccata, Sphaerine, and Wichuraea, was examined by light microscopy (LM) and scanning electron microscopy (SEM), or SEM alone. The studied species of Bomarea were stenopalynous, characterized by large, monosulcate monads with reticulate exine sculpture in most species. Opercula-like structures were present on the sulcus in B. huanuco and B. involucrosa. Differences in pollen size, exine thickness, and exine sculpture were observed. The studied taxa were divided into four major groups based on exine ornamentation observed under SEM: microreticulate, reticulate, coarsely rugulate, or finely rugulate-perforate. Pollen characters alone did not appear to correlate clearly with the current subgeneric classification of Bomarea, but they may have some taxonomic utility below the subgeneric level. The most reliable infrageneric classification of Bomarea can be achieved through combined analyses of morphological, palynological, and molecular data from larger samples of specimens of all the species.

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Palyno‐anatomical studies of monocot taxa and its taxonomic implications using light and scanning electron microscopy

Bahadur

Ahmad

Zafar

et al. 2018

Microscopy Res & Technique

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Palyno‐anatomical study of monocots taxa using Light and Scanning Electron Microscopy (SEM) was first time conducted with a view to evaluating their taxonomic significance. Studied plants were collected from different eco‐climatic zones of Pakistan ranges from tropical, sub‐tropical, and moist habitats. The aim of this study is to use palyno‐anatomical features for the correct identification, systematic comparison, and investigation to elucidate the taxonomic significance of these features, which are useful to taxonomists for identifying monocot taxa. A signification variation was observed in quantitative and qualitative characters by using the standard protocol of light microscopy (LM) and SEM. Epidermal cell length varied from maximum in Allium griffthianum (480 ± 35.9) μm at the adaxial surface to minimum in Canna indica (33.6 ± 8.53) μm on abaxial surface. Maximum exine thickness was observed in Canna indica (4.46) μm and minimum in Allium grifthianum (0.8) μm. Variation was observed in shape and exine ornamentation of the pollen, shape of the epidermal cell, number, size, and type of stomata, guard cell shape, and anticlinal wall pattern. Based on these palyno‐anatomical features a taxonomic key was developed, which help in the discrimination of studied taxa. In conclusion, LM and SEM pollen and epidermal morphology is explanatory, significant, and can be of special interest for the plant taxonomist in the correct identification of monocots taxa.

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Pollen morphology and infrageneric classification ofAlstroemeriaL. (Alstroemeriaceae)

Cited by 12 publications

References 23 publications

Pollen morphology and its taxonomic significance in the genus Bomarea Mirb. (Alstroemeriaceae) - II. Subgenus Bomarea

Pollen morphology and its taxonomic significance in the genus Bomarea Mirb. (Alstroemeriaceae) - II. Subgenus Bomarea

Pollen morphology and its taxonomic significance in the genus Bomarea Mirb. (Alstroemeriaceae) - I. Subgenera Baccata, Sphaerine, and Wichuraea

Palyno‐anatomical studies of monocot taxa and its taxonomic implications using light and scanning electron microscopy

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