PJB-2017-914
UNVEILING THE DISTRIBUTION OF FOLIAR TRICHOMES OF ARTEMISIA L. (ASTERACEAE) SPECIES FROM GILGIT BALTISTAN, PAKISTAN
Adil Hussain
Abstract
In this study, glandular and non-glandular trichomes distribution and their micromorphology on the leaf surfaces of some rare and new Artemisia species from Gilgit Baltistan region of Pakistan were scrutinized with scanning electron microscopy (SEM). 10 types of trichomes (glandular and non-glandular) were found in 16 Artemisia species. The glandular trichomes were of 4 types including peltate, pluricellular, capitate and thin necked trichomes, whereas non-glandular trichomes were of 6 types including, Aduncate, unicellular calavate, conical type, stinging hair type, unicellular tector and unicellurar filiform. Capitate trichomes were observed in Artemisia argyi, Artemisia verlotiorum, Artemisia vulgaris, Artemisia Spp-I, Artemisia spp-H, Artemisia tournefortiana and Artemisia spp-A. Peltate tricomes were confirmed in Artemisia chinensis, Artemisia montana, and Artemisia austriaca. Pluricellular trichomes were common in Artemisia annua, Artemisia chamaemelifolia and Artemisia spp-G. Thin neck trichomes with short neck with large head are found in Artemisia gmelinii. Conical type non-glandular trichomes were detected in Artemisia chinensis and Artemisia spp-A. Stinging hair were remarked in Artemisia argyi. Aduncate with hook like apex trichomes are existing in Artemisia indica, Artemisia verlotiorum and Artemisia spp-I. Unicellular calavate with short narrow base and thick apex were confirmed in Artemisia tournefortiana. The unicellular filiform trichomes with sharp apex were characteristic feature of Artemisia austriaca and Artemisia spp-H. Unicellular tector in cluster form were seen in Artemisia herba alba. This study for the first time report the trichome diversity in some rare and new species of the genus Artemisia. It is evident that the morphology of trichomes in amalgamaton with other characteristics, proposes a lot of attributes that could be helpful for species and groups differentiation.
To Cite this article:
Download
