Palynological investigation of lactiferous flora (Apocynaceae) of District Rawalpindi, Pakistan, using light and scanning electron microscopy. Issue 9 (20th May 2019)

• Record Type: Journal Article
• Authors: Naz, Saeeda; Zafar, Muhammad; Ahmad, Mushtaq; Memon, Rabia A.; Sultana, Shazia; Bahadur, Saraj; Ozdemir, Fethi A.; Siddiq, Zafar; Shah, Muhammad A.
• Is Part Of: Microscopy research and technique. Volume 82:Issue 9(2019)
• Page Start: 1410
• Page End: 1418
• Publication Date: 2019-05-20
• Subjects: Apocynaceae -- LM -- pollen study -- SEM -- taxonomic significance; Electron microscopy -- Technique -- Periodicals; Microscopy -- Periodicals; Microscopy -- Technique -- Periodicals; 502.825
• DOI: 10.1002/jemt.23293
• Languages: English
• ISSNs: 1059-910X

Abstract

Abstract: This was the first comprehensive pollen micromorphological investigation of lactiferous flora (Apocynaceae) of District Rawalpindi, Pakistan. The pollen morphology of 10 species of the family Apocynaceae was observed and documented using light microscopy and scanning electron microscopy. Pollen was found subspheroidal in shape in most of the species, however peroblate shape was noted in Vinca major . Exine sculpturing patterns (psilate, rugulate, scabrate, and microreticulate) were observed. The result indicated that exine ornamentation of Apocynaceae taxa is systematically informative at generic and species levels. Most of the species have tricolporate type pollen but tetraporate pollen was also observed in Trachelospermum jasminoides and tetracolpate in V. major . Minimum equatorial diameter was noted in Carissa edulis (27.13 μm) and maximum in V. major (108.25 μm). Similarly, maximum exine thickness was found in Cascabela thevetia (9.5 μm). In the present findings, the pollen morphological data are compared with available other pollen studies to evaluate the taxonomic value of pollen traits in Apocynaceae taxa by using multiple microscopic techniques. Furthermore, molecular and phylogenetic studies were recommended to strengthen the systematics of Apocynaceae taxa. Abstract : Pollen micromorphology of lactiferous flora (Apocynaceae) of District Rawalpindi, Pakistan. Taxonomic significance of pollen micromorphological features in Apocynaceae taxa. Taxonomic key based on pollen traits for identification and discrimination of Apocynaceae taxa using light and scanning electron microscopy.