Genetic Divergence, Character Correlations and Heritability Study in 22 (Arachis hypogaea L.) Accessions of Groundnut

Abstract

Twenty two groundnut genotypes collected from International Crops Research Institute for Semi Arid Tropics (ICRISAT) and local sources (Samaru, UNILORIN and UNAAB) were cultivated in Lagos (60º 36'N, 30º 34'E) and Abeokuta (70º 10'N, 30º 20'E) during 2010 planting seasons, to determine the genetic variability and performance of the genotypes. Data collected on ten (10) characters and yield was subjected to multivariate analysis to determine genetic divergence among the genotypes. Number of pods per plant showed significant positive correlation with yield per plant in both environments also had the largest direct positive effect on yield per plant (0.66, 0.70). Days to maturity showed the largest direct negative effect of-0.33 and-0.36 in Lagos 2003 and Abeokuta 2004 respectively. Heritability estimates ranged from 62.34% to 90.67 and 24.75 to 89.46 for number of branches per plant at flowering and days to maturity in (E1) Lagos and (E2) Abeokuta, respectively. The mean squares of the combined analysis of variance revealed significant genotypes and Genotype x Environment interactions on yield per plant.

Diallel analysis, maternal effect and heritability in groundnut for yield components and oil content

“…The analysis of variance revealed considerable genetic variability among the genotypes for most of the traits under study. The findings support previous observations [ 26 , 27 ] that there is a considerable variability in yield component and oil quality in groundnut. Moreover, the F 2 population used in this study exhibited a wider range variation of phenotypic variation due to segregation and recombination, attributable to genetic variation.…”

Molecular Characterization of Fluted Pumpkin Landraces in South East Nigeria

“…(2014) that abundant genetic divergence existed in fluted pumpkin germplasm. According to Makinde and Ariyo [16], "the pattern of genetic variation observed would be of great importance to germplasm collectors and plant breeders". "The categorization of the diversity among the genotypes into groups with similar characteristics can be used to design a collection strategy" [17,16].…”

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

“…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).…”