Phenotypic Diversity within Ipomoea Mauritiana Jacq. (Ksheeravidari) Germplasm Collections

Lakshmi Mohan N,Geetha S Pillai,Sadheeshna Kumari S

doi:10.13189/azb.2020.080104

Abstract

The morphological parameters have been widely used in the evaluation of various crops. Quantitative and qualitative characters of 18 phenotypes of Ipomoea mauritiana Jacq, collected from various locations of Kerala were studied and data were recorded. Various qualitative data collected were grouped using PAUP software and dendrogram was constructed using UPMGA. The morphological characters like vine color, plant type, root formation, root color, root shape were the same and notable variations were seen in leaf lobe number, leaf color, leaf length and breadth, petiole length, petiole color. The morphology of tubers was studied after one year of planting and the data were scored and tabulated. The phenotypic variations provide an easy way to assess the accessions and for further evaluations. The variations were most expressed in the leaf colour, vine color, petiole colour, leaf length, leaf breadth, tuber fresh weight, tuber dry weight, tuber dry recovery percentage, number of roots formed per plant. From dendogram IM-6 showed much significant morphological variation from others. Furthermore studies have to be done to confirm existence of any genetic variations amongst them by carrying out experiments using molecular techniques.

Highlights

Ipomoea mauritiana Jacq is an important medicinal plant that belongs to the Convolvulaceae family
The results of the study indicated that the variation within 18 Ipomoea mauritiana (IM) collections could be generally categorized under highly significant, significant and non-significant (Figure 1)
mostly dark purple (MDP), G or totally purple (TP) were expressed by 11.11% each of the collections and 5.55% each of the collections expressed phenotypes such as totally dark purple (TDP) and green with many dark purple spots (GDPS)

Summary

Introduction

Ipomoea mauritiana Jacq is an important medicinal plant that belongs to the Convolvulaceae family. Parameters such as twining habit, extremely spreading plant type pattern and lobed leaf shape were shared by all the collections. A good number of the collections under study had green leaf colour (55.55%), followed by one with green leaves with purple veins on upper surface (27.78%) and those having green leaves with purple edge (11.11%).

Results

Conclusion