TY - JOUR AU - Karna Mallick, Pushpa PY - 2017/09/27 Y2 - 2024/03/29 TI - Palynological Studies on Ten Species of Angiosperms from Nepal JF - International Journal of Applied Sciences and Biotechnology JA - Int J Appl Sci Biotechnol VL - 5 IS - 3 SE - Research Articles: Biological Sciences DO - 10.3126/ijasbt.v5i3.18294 UR - https://www.nepjol.info/index.php/IJASBT/article/view/18294 SP - 361-365 AB - <p>Palynological studies on ten species of angiosperms family namely <em>Hibiscus</em> <em>rosa-</em> <em>sinensis </em>L<em>.</em>(Malvaceae), <em>Lilium candidum </em>L.<em> </em>(Liliaceae), <em>Petunia axillaris</em> (Lam.) B.S.P.(Solanaceae) and seven species from family asteraceae namely <em>Artemisia indica </em>Willd.<em>, Aster ageratoides </em>Kitam.,<em> Calendula offcinalis </em>L.,<em> Cerpis japonica </em>L. (Benth.),<em> Sonchus asper </em>(L.) Hill<em>, Tagetus patula </em>L.,<em> </em>and<em> Taraxicum officinale </em>F.H.Wigg.<em> </em>was carried out. Result obtained from this investigation showed that pollen shape is spheroidal in <em>Artemisia indica, Aster ageratoides, Calendula offcinalis, Hibiscus</em> <em>rosa-</em> <em>sinensis </em>and<em> P.</em> <em>axillaris;</em> elliptical in <em>L. candidum</em>, hexagonal in <em>S. asper </em>and<em> </em>pentagonal in <em>T. officinale</em>; tricolpater in <em>C.japonica.</em> Pollen aperture is porate in all except in <em>L.candidum</em> where it is elliptic. Pollen wall is echinate in <em>H.rosa-sinensis, A.ageratoides, T. patula; spinulate in P. axillaries,</em> <em>T. officinale, S. asper,</em> <em>C. japonica, C. officinalis and T. officinale </em>and smooth in<em> L. candidum</em>. The general appearance of the pollen grain is circular in <em>P</em>. <em>axillaries</em> but longer than wide in <em>L.candidum</em>. The circular, echinate, large and triporate pollens seem to be primitive ones and spharoidal, hexaporate features have been regarded as comparatively advanced ones. Polyporate pollens are considered to be secondarily derived. The nature of the pollen grain in these species could be evolutionary significance. The similarities in structure of the pollen grain showed the inter- species relationships among the species and that’s why put in same family while the differences in structures showed reasons for them to exist as distinct species. Only one species namely <em>L.candidum</em> from monocot family (Liliaceae) included in this study. </p><p><em>Int. J. Appl. Sci. Biotechnol. Vol 5(3): 361-365</em></p> ER -