Abstract
The pollen morphology with special reference to exine sculpturing of four species of the genus Pedicularis L. has been examined by light and scanning electron microscope. Comparative pollen analysis was made based on the type of pollen, shape in polar and equatorial views, P/E ratio, exine thickness and sculpturing of pollen. In this study, two types of pollen aperture configuration known in the genus were observed i.e., trisyncolpate and bi-syncolpate. Pollen grains with microscabrate ornamentation were found in bi-syncolpate pollen for the first time. Pollen fertility estimation ranged from 87-95%, which shows that pollen flora of selected species is well established in Alpine zone.DOI: http://dx.doi.org/10.3329/bjpt.v19i1.10935Bangladesh J. Plant Taxon. 19(1): 1-5, 2012 (June)
Highlights
The Deosai Plateau (30°00 ́ N, 75°30 ́ E) is located in the north of the main Himalayan range in Baltistan, Pakistan
Four Pedicularis species used in this study were P. bicornata Kl., P. chielanthifolia Schrenk, P. pectinata Wall. ex Benth. and P. punctata Decne
The pollen grains were prepared for scanning electron microscopy (SEM) by the methods described by Erdtman (1952)
Summary
The Deosai Plateau (30°00 ́ N, 75°30 ́ E) is located in the north of the main Himalayan range in Baltistan, Pakistan. Tsoong and Chang (1965) recognized three types of pollen aperture in the genus, i.e., tri-colpate, trisyncolpate and bi-syncolpate. Details on exine ornamentation start to emerge when pollen from two Turkish (Inceoğlu, 1981) and one Canadian species (Minkin and Eshbaugh, 1989) was reported and illustrated using LM and scanning electron microscopy (SEM). Four Pedicularis species used in this study were P. bicornata Kl., P. chielanthifolia Schrenk, P. pectinata Wall.
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