pollen morphology
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Author(s):  
Z. M. Tsymbalyuk ◽  
L. M. Nitsenko ◽  
S. L. Mosyakin

The aim of this research was to provide detailed quantitative and qualitative characteristics on pollen grains of Weigela floribunda (Siebold & Zucc.) K. Koch (Caprifoliaceae) as applied for taxonomy. Pollen morphology of W. floribunda was studied using both light microscopy and scanning electron microscopy. Pollen grains are 3-porate, rarely 4-porate, suboblate to spheroidal (P/E=0.80–1.05); in equatorial view elliptic or circular, in polar view circular or subcircular; medium- or large-sized (P=42.56–61.18 µm, E=42.56–66.50 µm). Pores are circular with distinct or indistinct margins and distinct annuli. Exine sculpture is echinate-microechinate-nanoechinate. Pollen grains of W. flori- bunda were analyzed for the first time in the present study.


2021 ◽  
Vol 28 (2) ◽  
pp. 395-403
Author(s):  
Fatma Mungan Kiliç

In this study, the pollen morphology and exine structure of nine species of the genus Salvia L. (Lamiaceae) were investigated using light microscopy and scanning electron microscopy (SEM). Six micromorphological characters (pollen shape, polar length, equatorial width, exine and intine thickness, colpus length and colpus width) of pollen grains of Salvia have been identified. The palynological observations revealed that pollen grains of most studied taxa of Salvia were suboblate shape and possess hekzacolpate aperture. Tectal surface sculpture was a good criterion to identify particular taxa from Salvia. The pollen of which is characterized by reticulate, the pollen ornamentation was similar in all studied taxa. Bangladesh J. Plant Taxon. 28(2): 395-403, 2021 (December)


Author(s):  
Min Liao ◽  
Fazal Ullah ◽  
Heng‐Ning Deng ◽  
Jun‐Yi Zhang ◽  
Bo Xu ◽  
...  

Grana ◽  
2021 ◽  
pp. 1-8
Author(s):  
Hayeon Choi ◽  
Sakiko Mitsuyama ◽  
Kweon Heo
Keyword(s):  

2021 ◽  
Vol 56 ◽  
pp. 183-190
Author(s):  
Fatemeh MOUSAVIMANESH ◽  
◽  
Maryam KESHAVARZI ◽  
Zahra NAZEM BOKAEE ◽  
◽  
...  

Lycium (Solanaceae) has more than 100 species in arid and semi-arid parts of the world. In Iran, this medicinal plant is represented by 6 species, on which no palynological study has been conducted. Pollen morphology of 7 taxa are considered for the first time to evaluate the species relationships based on palynological data. Observations were made by use of Scanning electron microscopy on untreated pollen grains. Multivariate statistical analyses were carried out for qualitative and quantitative pollen features in the species studied. Results show that all pollen grains were monad, isopolar, zonotricolporate in prolate and preprolate shape. Exine sculpture was of striate and regulate patterns. Variations in pollen grains are considered to overcome the identification problems in species separation in morphologically similar taxa in this genus in Iran. The importance of pollen features in delimitation in some genera of Solanaceae was previously proven and the present study elucidates that some features as exine sculpture and some quantitative characters are of diagnostic importance in Lycium species native to Iran.


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