Evaluation of agro-morphological diversity of groundnut (Arachis hypogaea L.) in Niger

Abstract

This work evaluated a collection of hundred groundnut (Arachis hypogaea L.) varieties from different origin using twenty four (24) agro-morphological traits that can help to enhance selection efficiency in crop improvement. The experiment was carried out at the experimental station of INRAN-Tarna, in the region of Maradi (Niger) during the rainy season of 2010. Analysis of variance showed a large variability among varieties for the agro-morphological traits. Principal Component Analysis (PCA), Agglomerative Hierarchical Clustering (AHC) and Fisher Discriminant Analysis (FDA) revealed that this variability is structured into four distinct groups. Groups I and II consisted of early varieties that have a high emergence rate and high pods and seed weight. These groups included mainly local varieties and those introduced in Niger through seed dissemination. Groups III and IV are composed of late varieties with large pods while group III had mostly varieties with long leaflets. Understanding the genetic control of the most discriminating among the studied traits would bring significant contribution to the genetic improvement of this important crop.

Genetic diversity of the Algerian peanut population analyzed using morphological markers and seed storage proteins

“…On the other hand, characters which have a low loading in the distinction of accessions were growth habit and leaf color for F1, and peg pigmentation and days to maturity for F2. These results agree with those reported by P. Mahalakshmi et al ( 2005), Idi Garba et al (2015), and F. B. Neya et al (2017).…”

Genetic Diversity Studies in Groundnut (Arachis Hypogaea L.) using Morpho-Physiological Traits

“…Thus, the selection of the improved breeding population depends on the level of available genetic diversity (Amarasinge et al, 2016). Phenotypic characterization is the first step for describing, assessing, and classifying germplasm collections to ascertain their use in groundnut breeding (Garba et al, 2015). The assessment of the phenotype has proven effective for diversity analysis in some legumes and oil crops, including groundnut (Saritha et al, 2018;Garba et al, 2015;Oppong-Sekyere et al, 2019).…”

“…Phenotypic characterization is the first step for describing, assessing, and classifying germplasm collections to ascertain their use in groundnut breeding (Garba et al, 2015). The assessment of the phenotype has proven effective for diversity analysis in some legumes and oil crops, including groundnut (Saritha et al, 2018;Garba et al, 2015;Oppong-Sekyere et al, 2019). Multivariate analysis is a popular method for estimating genetic variability to study the components of variation and their genetic relationships between germplasm collections (Syafii et al, 2015;Rahal-Bouziane et al, 2015).…”

“…Multivariate analyses have been used in many studies on groundnuts (Makinde et al, 2013). Selection effectiveness depends on the extent of genetic variability present in the available germplasm for the trait of interest and its heritability value (Garba et al, 2015). This study aimed to provide information on the extent of genetic diversity of the selected genotypes and the interrelationships between yield, morphological, and physiological, which is desirable for suggesting appropriate breeding procedures, especially under stressed conditions.…”