Comparative SEM and LM foliar epidermal and palyno‐morphological studies of Amaranthaceae and its taxonomic implications

Abstract

Palynological features as well as comparative foliar epidermal using light and scanning electron microscope (SEM) of 17 species (10genera) of Amaranthaceae have been studied for its taxonomic significance. Different foliar and palynological micro-morphological characters were examined to explain their value in resolving the difficulty in identification. All species were amphistomatic but stomata on abaxial surface were more abundant. Taxonomically significant epidermal character including stomata type, trichomes (unicellular, multicellular, and capitate) and epidermal cells shapes (polygonal and irregular) were also observed. Pollens of this family are Polypantoporate, pores large, spheroidal, mesoporous region is sparsely to scabrate, densely psilate, and spinulose. All these characters can be active at species level for identification purpose. This study indicates that at different taxonomic levels, LM and SEM pollen and epidermal morphology is explanatory and significant to identify species and genera.

The use of taxonomic studies to the identification of wetlands weeds

“…Variations are found in pollen micro-morphological characters including the shape of pollens, size of pollens, exine sculpturing, etc. Pollen morphology has been studied previously by (Perveen, Qaiser, 2012;Hussain et al, 2018) in which they reported that exine sculpturing of the Amaranthaceae family was scabrate to psilate, while in our study A. sessilis have micro-echinate exine ornamentation. Similarly, exine of T. latifolia has Rugulate to scabrate sculpturing confirmed the findings of (Bahadur et al, 2018).…”

Microscopic investigations of some selected species of Papilionaceae through SEM and LM from Skardu valley, northern Pakistan

“…The stomatal index showed a considerable variation in all the selected taxa. Stomatal index also used as geographical marker and highest stomatal index shows the highest rate of transpiration and metabolism (Hussain et al, ). Trichomes of selected species showed significant distinction.…”

Palyno‐morphological investigations of halophytic taxa of Amaranthaceae through SEM from Salt range of Northern Punjab, Pakistan

“…The family Amaranthaceae is one of the rich families of the salt range of Pakistan as it includes a higher number of halophytes. The pollen morphology of its members possesses rich diversity (i.e., radially symmetrical, usually apolar, pantoporate, polypantoporate, shape spheroidal, tectum punctate scabrate, rarely spinulose; Perveen & Qasier, ; Hussain et al, ). Pollen grains of Amaranthaceae are pantopolyporate and some genera of the family such as Chenopodium L. have similar exine structure (Pinar & İnceoglu, ).…”