Phenotypic Characterization and Multivariate Analysis of Fifteen Maize Lines developed by Induced Mutation in Daloa (Côte d’Ivoire)

Abstract

In Côte d'Ivoire, maize is an important staple food for a large part of the population. However, its culture faces many constraints related to soil degradation, climate change and genetic degeneration of cultivated varieties. In order to create new varieties adapted to these constraints, mutant maize Lines have been developed using the gamma radiation technique. The present study aims to phenotyping 15 mutant Lines from the sixth generation of self-pollination, in order to characterize them and to give information on their genetic diversity. For this, an experiment in a randomized complete block design with three replications was conducted. Thirteen traits were evaluated and they showed wide variation not only between the mutant Lines but also between them and the non-irradiated control. Multivariate analysis structured this variability into five distinct groups with specific traits. The interest of the revealed traits and the future use of these mutant Lines are discussed.

Keywords: maize, gamma radiation, induce mutation, phenotypic characterization

DOI: 10.7176/JBAH/13-18-05

Publication date:December 31^st 2023