Fruit Morphometric and RAPD Evaluation of Intraspecific Variability in Some Accessions of African Yam Bean (Sphenostylis stenocarpa Hochst. ex. A. Rich. Harms)
Journal Title: Annual Research & Review in Biology - Year 2017, Vol 14, Issue 4
Abstract
African Yam Bean (AYB) (Sphenostylis stenocarpa, Hochst. ex A. Rich, Harms) is an indigenous underutilized legume mainly grown in Sub-saharan African as a source of protein. Intraspecific variability studies were carried out on 10 accessions of AYB obtained from the International Institute of Tropical Agriculture (IITA) Ibadan, Nigeria. Fourteen (14) fruit morphometric characters and nine (9) arbitrary RAPD primers were employed for evaluation of genetic intra-specific variability among the accessions. A total of 410 bands were generated with 261 (63.66%) polymorphic bands. There is significant correlation among some reproductive characters; days to 50% flowering, pods per peduncle, number of locules per pod, number of seeds per pod, pod length and seed set percentage. These characters represent good markers of the taxon suitable for breeding and genetic improvement purposes. Morphometric and RAPD cluster analysis using UPGMA resulted in a dendrogram each; with membership similarity ranging from 72% to 93%. Two accessions (TSs56 and TSs94) recorded higher level of similarity index of 93% based on RAPD profiling. The morpho-metric evidences shows inherent stability of AYB across varied eco-geographical settings, which demands further investigation and exploitation. However, the RAPD evidences show that the species have evolved and adapted to distinct geographical setting with a clear Nigeria and Ghana demarcation. This fact can be engaged to guide future studies, germplasm collection, characterization, documentation, utilization and conservation of AYB to boost knowledge and awareness on the genetic diversity and utility of the species.
Authors and Affiliations
J. O. Popoola, B. M. Adebayo, A. E. Adegbite, A. C. Omonhinmin, B. D. Adewale
Keywords
Related Articles
- EP ID EP313509
- DOI 10.9734/ARRB/2017/34264
- Views 97
- Downloads 0
Diverse Genetic Screening and Counseling throughout the Iranian Population
Background and Aim: The recent decades have witnessed increasing possibilities for genetic testing and screening. In the Iran, since the 1970s, individuals and their family members could obtain genetic counselling for th...
Analysis on Local Food and Agrochemical Concept
Aims: To distinguish between the defining attributes of local food and agrochemical concept as well as its irrelevant structure. Study Design: Wilson concept analysis consists of comparison of data units abstracted throu...
Assessment of Phytoplankton Diversity in Al-Diwaniya River, Iraq
Background and Aim: The present study was conducted to determine the biodiversity of the phytoplankton community in Al-Diwaniya River. Place and Duration of Study: Al-Diwaniya River in Al-Qadisiyah Province at three stat...
Nutritional Composition and Antioxidant Activity of Leaves and Rhizomes of Bemban (Donax grandis) Grown under Glasshouse Conditions
Aims: The aim of this study is to find out the results of proximate analysis, antioxidant activity and mineral composition of leaves and rhizomes of Donax grandis (locally known as Bemban), an underexploited herbaceous p...
Growth and Water-Yield Functions of Dry-Season Fadama-Grown Pepper (Capsicum annuum L.) Under Differential Irrigation in a Rainforest Zone of Nigeria
Field experiments were conducted to assess the effects of differential irrigation on the growth, stress development and water- yield functions of dry season fadama-grown pepper in a humid rainforest zone of Nigeria. The...