Assessment of Genetic variability among ethidium bromide-derived genotypes of cowpea (Vigna unguiculata (L.) Walp) at M7 generation


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Authors

  • A. T Ajayi Adekunle Ajasin University
  • O. S Osekita Adekunle Ajasin University
  • T. F. Ojo Adekunle Ajasin University
  • O. E. Omoniyi Adekunle Ajasin University

DOI:

https://doi.org/10.59287/ijanser.741

Keywords:

Cowpea, Genetic Base, , Genetic Diversity, Induced Mutation, Traits

Abstract

An induced mutation is a valuable tool for creating new genetic variability to complement existing germplasm and broaden crop genetic base. Thus, creating genetic diversity is needed for effective plant breeding programs. This study was aimed at evaluating the level of variation of phenotypic traits among ethidium bromide (EtBr)-derived genotypes of cowpea evaluated during the dry season of 2021-2022. Six cowpea genotypes obtained from the Department of Plant Science and Biotechnology, Adekunle Ajasin University, Akungba-Akoko were used in the study. These were evaluated in a randomized complete block design (RCBD) in 3 replicates in the field. The traits measured were emergence percentage, number of leaves/plant, plant height, number of main branches/plant, number of peduncles/plant, peduncle length, pods/plant, pod length, seeds/pod, number of seeds/plant, 100-seed weight, and seed yield/plant. Upon statistical analysis, it was observed that G3 (IT98K-555-1) at a concentration of 0.5% for 16hrs was most suitable to broaden the genetic base of cowpea and can be selected for further breeding programs.

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Author Biographies

A. T Ajayi, Adekunle Ajasin University

Department of Plant Science and Biotechnology, Ondo State, Nigeria

O. S Osekita, Adekunle Ajasin University

Department of Plant Science and Biotechnology, Ondo State, Nigeria

T. F. Ojo, Adekunle Ajasin University

Department of Plant Science and Biotechnology, Ondo State, Nigeria

O. E. Omoniyi, Adekunle Ajasin University

Department of Plant Science and Biotechnology, Ondo State, Nigeria

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Published

2023-05-25

How to Cite

Ajayi, A. T., Osekita, O. S., Ojo, T. F., & Omoniyi, O. E. (2023). Assessment of Genetic variability among ethidium bromide-derived genotypes of cowpea (Vigna unguiculata (L.) Walp) at M7 generation. International Journal of Advanced Natural Sciences and Engineering Researches, 7(4), 383–393. https://doi.org/10.59287/ijanser.741

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