A phylogenetic study of floral morphology of some members of Asclepiadaceae R.Br

Abstract

Floral morphological diversity and phylogenetic relationship were studied in the family Asclepiadaceae. This family characterized by unique features that contributes to extreme floral complexity and diversity. In this paper, we used preliminary phylogenetic hypothesis for the family Asclepiadaceae to explore the mode of diversification in pollinarium and coronal structure. The occurance, size, shape, position, orientation of pollinia, mode of pollination and the presence of form of coralline corona and gynostegial corona were studied for similarity indices between two subfamilies Periplocoideae and Asclepiadoideae.

An insight on the complete chloroplast genome of Gomphocarpus siniacus and Duvalia velutina, Asclepiadoideae (Apocynaceae)

“…The sister relationship between Gomphocarpus and Calotropis is also validated. Gomphocarpus and Calotropis were placed in the tribe Asclepiadeae as sub tribe (Nazar et al, 2019;Sinha and Mondal, 2017). Recently Sinha and Mondal;Nazar et al, 2019 both classified Gomphocarpus under the tribe Asclepiadeae on the basis of molecular trnL-trnF markers.…”

“…Gomphocarpus and Calotropis were placed in the tribe Asclepiadeae as sub tribe (Nazar et al, 2019;Sinha and Mondal, 2017). Recently Sinha and Mondal;Nazar et al, 2019 both classified Gomphocarpus under the tribe Asclepiadeae on the basis of molecular trnL-trnF markers. Our results indicate the position of Duvalia as member of the tribe Ceropegieae while Gomphocarpus has been placed under tribe Asclepiadeae.…”