POLLEN MORPHOLOGY OF SOME SPECIES OF BIGNONIACEAE IN LASHIO AREA
Abstract
- The pollen grains of 15 species from 14 genera of Bignoniaceae in Lashio area were investigated by using light microscope. The species studies were included in genera Campis, Dolichandrone, Haplophragma, Jacaranda, Mansoa, Mayodendron, Millingtonia, Oroxylum, Podranea, Pyrostegia, Radermachera, Spathodea, Tabebuia and Tecoma. Pollens collected from mature flowers were analyzed by acetolysis method of Erdtman 1960. The pollen grains of the species studied were monads with radially symmetrical; apolar or isopolar; tricolpate in 7 species, tetracolpate in only one species, tricolporoidate with ill-defined endoaperture in 4 species, tricolporate with lolongate endoaperture in 2 species and polycolpate in only one species; the apertures position showed zonocolpate in most species but pantocolpate in Mansoa alliacea; mostly subprolate to prolate except from those of Tecoma stans and Radermachera yunnanensis; circular, rounded triangular to triangular amb; exine sculpture psilate in one species, microreticulate in 3 species and reticulate in 11 species; homo- or heterobronchate lumen, with simpli or duplibaculate muri. The resulting pollen morphological diversity may offer some taxonomic potential and interrelationships among the studied species.
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Year
- 2021
Author
-
Swe Swe Win
Subject
- Botany
Publisher
- Myanmar Academy of Arts and Science (MAAS)