Pollen Morphology and Pollen Fertility Estimation of Three Medicinal Plant Species of &amp;lt;i&amp;gt;Hypericum&amp;lt;/i&amp;gt; L. from Kaghan Valley, Northern Pakistan

Mazari, Paras; Liu, Quan‐Ru; Khan, Mir Ajab; Sadia, Sehrish; Ahmad, Latif

doi:10.4236/ajps.2017.812207

Cited by 6 publications

(6 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second group was sph prolate, composed of two species, i.e., H. davisii and H. perforatum. Mazari et al (2017) also obtained similar results and mentioned that in the polar view, the pollen grains' shape in all the species was circular to semi-angular; however, in the equatorial view, the pollen grains were oblatespheroidal. According to the surface decoration of pollen grains examined by SEM, the isolated species under study were divided into four groups:…”

Section: Resultssupporting

confidence: 55%

Palynological Diversity of Pollen Morphology in Endemic Northern Iraqi Hypericum Species (Hypericaceae)

ALANBARI,

AL-HADEETHI,

AL-SHAMI

et al. 2023

SABRAOJBG

View full text Add to dashboard Cite

The presented research investigated the pollen morphology of endemic Iraqi Hypericum species. The study revealed phenotypic features of pollen grains in the polar and equatorial views and their quantitative and qualitative characteristics. The results showed that the pollen grains of the genus Hypericum were radially symmetrical and isopolar, and their apertures were simple and tricolporate, except the species H. davisii, distinguished as tetracolprate. Dividing the studied species based on pollen grain sizes comprised two groups. Small pollen grains with an average length of the equatorial view ranged between 10–16 μm in H. lysimachioides and H. vermiculare. Medium-sized pollen grains with an average extent between 17–26 μm emerged in the species, i.e., H. retusum, H. triquetrifolium, H. perforatum, H. lydium, H. tetrapterum, H. asperulium, H. scabrum, and H. davisii. Pollen grains, also divided according to the P/E ratio, had two main groups. The pollen grains were subprolate and spherical, with the exine sculpturing examined by a scanning electron microscope (SEM), and isolated into four groups: 1) microreticulate reticulum, including H. asperulium, H. lydium, and H. vermiculare, 2) perforate, i.e., H. retusum, H. scabrum, H. tetrapterum, and H. triquetrifolium, 3) psilate with H. perforatum and H. davisii, 4) and reticulate exine sculpturing in H. lysimachioides, all isolated from the rest of the species. SEM images showed the thickness of exine ranged from 0.5 to 2 μm. The topical study also added H. davisii as a new species with no previous records in Iraq. This pollen study added valuable data for taxonomy and suggested that it should proceed with its first-time registration in Iraq. The pertinent research could provide a taxonomical key for Hypericum species in Iraq.

show abstract

Section: Resultssupporting

confidence: 55%

Palynological Diversity of Pollen Morphology in Endemic Northern Iraqi Hypericum Species (Hypericaceae)

ALANBARI,

AL-HADEETHI,

AL-SHAMI

et al. 2023

SABRAOJBG

View full text Add to dashboard Cite

show abstract

“…Radaeski et al (2016) [ 46 ] studied monoporate apertures in Poaceae. Pollen grains in Poaceae may provide a strong correlation among size, pore, and annulus [ 24 , 62 ]. The aperture is reported as an important feature used for the identification of closely related taxa [ 63 ].…”

Section: Discussionmentioning

confidence: 99%

Palyno-Morphological Characteristics as a Systematic Approach in the Identification of Halophytic Poaceae Species from a Saline Environment

Nazish

Althobaiti

2022

Plants

View full text Add to dashboard Cite

Pollen morphology of 12 salt-tolerant grasses (Calamagrostis pseudophragmites, Cenchrus biflorus, Cenchrus ciliaris, Cenchrus pennisetiformis, Cymbopogon jwarancusa, Dactyloctenium aegyptium, Echinochloa colona, Echinochloa crus-galli, Saccharum griffithii, Saccharum ravennae, Saccharum spontaneum, and Urochloa ramosa) from the Salt Range was studied using scanning electron microscopy (SEM) and light microscopy (LM). The main aim was the elucidation of taxonomic significance of pollen morphology, which might be useful for taxonomists in the identification of halophytic Poaceae taxa. The described pollen morphology is a good source of taxonomic characteristics that can help in species and genera differentiation. The investigated variations in the pollen micromorphological features and exploration of new palynological traits support and strengthen the systematics of Poaceae. The pollen shape of all studied species was sub-spheroidal, and exine ornamentation includes microechinate-areolate (11 spp.) and microechinate (1 spp.). Two types of pollen apertures were reported, i.e., monoporate (11 spp.) and diporate (Cenchrus pennisetiformis). The annulus was found in all species while operculum was observed only in three species. The univariate and multivariate analyses were used to analyze the quantitative data. The highest pollen viability values (%) depicted the adaptability of Poaceae taxa in the salt region. Overall, the pollen characteristics in polar and equatorial view, apertures, annulus, operculum, and surface ornamentation of pollen grains of the family Poaceae are of great taxonomic significance for the species identification.

show abstract

“…Similarly, reticulate, scabrate and echinate sculpturing were noticed in A. absinthium and S. kurramense which is dissimilar to Umber et al (2022) findings, who reported echinate reticulate ornamentation in P. hysterophorus and Scabrate echinate exine sculpturing in X. strumarium. According to Mazari et al (2017), pollen grain reported is circular to sub angular and echinate in X. strumarium. Attique, et al (2022): recently, described that A. vulgaris have echinate perforate exine ornamentation, which is dissimilar to the finding of the current study.…”

Section: Discussionmentioning

confidence: 99%

Palyno-morphological assessment of Asteraceae taxa grown in Qarshi Botanical garden at Qarshi Industries (Pvt.) Ltd by using LM and SEM, Pakistan

Sohail¹,

Majid²

2023

J. Med. Plants Res.

View full text Add to dashboard Cite

The present study covers the micro-morphological characteristics of 32 taxa of Asteraceae family from Qarshi Botanical Garden at Qarshi Industries (Pvt.) Ltd., Hattar Haripur, Pakistan. The morphopalynological characters studied were size, shape, polar and equatorial diameter and their exine ornamentation using light microscopy (LM) and scanning electron microscopy (SEM) for its taxonomic significance. In the present investigations the pollen apertures of examined taxa were tricolporate, tricolpate, trizonocolporate, pentaporate and tetracolporate. mesocolpium orientation according to P/E ratio was identified as reticulate, echinate, oblate-spheroidal, echino-lophate, densely perforated and echinate perforate. It was found that the following 32 types of exine sculpture occurred in the investigated species: Echinate-perforate, aerolate-echinate, echinate-microreticulate, verrucateechinate, scabrate-Echinate, reticulate and shortly spinulate, echinate, elliptic to rarely circular and hexagonal view and spinulose-verrucate. Similarly, variation in polar diameter was prominent and the largest pollen was recorded on Artemisia vulgaris, Chicorium intybus, Helianthus annuus and Carthamus oxyacantha which have polar diameter. This was found with large size of 42.65 µm while the smallest polar diameter size was found in Chrysanthemum leucanthemum, Artemisia absinthium, Stevia rebaudiana, Tanacetum vulgare, Saussurea costus and Tanacetum cinerariifolium. Exine thickness of maximum value was examined in Centratherum punctatum 1.7 µm, while the minimum one was recorded in Seriphidium kurramense 0.5 µm (0.15-0.90). Pollen fertility was estimated with the highest percentage which was counted in C. leucanthemum (89.55%), while the highest sterility percentages were observed in Lactuca sativa (63%). The lowest fertility and sterility percentages were observed in L. sativa and S. kurramense (40 and 36.80%), respectively. The findings from the analysis of pollen morphological data show species level and taxonomic importance.

show abstract

Pollen Morphology and Pollen Fertility Estimation of Three Medicinal Plant Species of <i>Hypericum</i> L. from Kaghan Valley, Northern Pakistan

Cited by 6 publications

References 11 publications

Palynological Diversity of Pollen Morphology in Endemic Northern Iraqi Hypericum Species (Hypericaceae)

Palynological Diversity of Pollen Morphology in Endemic Northern Iraqi Hypericum Species (Hypericaceae)

Palyno-Morphological Characteristics as a Systematic Approach in the Identification of Halophytic Poaceae Species from a Saline Environment

Palyno-morphological assessment of Asteraceae taxa grown in Qarshi Botanical garden at Qarshi Industries (Pvt.) Ltd by using LM and SEM, Pakistan

Contact Info

Product

Resources

About