Abstract
Insufficient information on the diversity of plantain and its relationship with other Musa species in the Musa genus has been cited as one of the major problems hindering genetic improvement within the genus. Hence, this study aimed to assess genetic diversity among plantain cultivars using RAPD markers. Fifteen plantain cultivars were deployed for this study, comprising of ten landraces sourced from different parts of Edo state and five hybrids from International Institute of Tropical Agriculture (IITA), Ibadan. The study revealed a total number of 2 alleles across 4 RAPD primers analysed, effective number of alleles (N e ) ranged from 1.14-2.0, Nei's genetic distance (H) had a mean of 0.30. Polymorphic information content (PIC) ranged from 0.12 (OPT-07) to 0.23 (OPH-06), 0.40 (OPT-01) and 0.46 (OPT-06), with a mean of 0.30, which indicated that markers used were polymorphic. Dendrogram revealed 2 clusters; MP EKO and MP ACH both from Edo state displayed genetic relatedness and were more related to MP No. 2 from IITA than MP 07 FPT in the same cluster. The results suggest that though the hybrids have been improved for special qualities, the landraces from Edo state could possess some genes of interest in plantain breeding program. Keywords: Musa paradisiaca , RAPD, genetic variability, markers
Highlights
Fifteen plantain cultivars were deployed for this study, comprising of ten landraces sourced from different parts of Edo state and five hybrids from International Institute of Tropical Agriculture (IITA), Ibadan
Fifteen genotypes of plantain (Musa, AAB genome), which include 15 landraces collected from some major plantain producing districts in Edo State and 5 hybrids from the germplasm collection of the International Institute of Tropical Agriculture (IITA), Ibadan were used in the study (Table 1)
This study focused on the genetic variability inherent among plantain varieties studied
Summary
Plantains and Bananas belong to the make-up of crops represents a great opportunity. The cultivated varieties of Musa to explain the functions of genes of species are major staple fruit crop in developing interest, and to detect regions in the genome countries (Swennen and Wilson, 1983). The advent of modern DNA technologies hybridization and somatic mutation, has resulted and bioinformatics has aided sequencing and in a variety of cultivars. In Africa, one hundred assembly of genomes of economically important and sixteen plantain cultivars have been crops (Feuillet et al, 2011). DNA marker identified and the number of plantain cultivars techniques have been widely used in Musa has been reported to vary from country to genetics and in taxonomy, cultivar true to type country (Swennen, 1990)
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