Record Details

Phenotypic correlation, path coefficient and multivariate analysis for yield and yield-associated traits in groundnut accessions

OAR@ICRISAT

View Archive Info
 
 
Field Value
 
Relation http://oar.icrisat.org/11682/
https://doi.org/10.1080/23311932.2020.1823591
doi:10.1080/23311932.2020.1823591
 
Title Phenotypic correlation, path coefficient and multivariate analysis for yield and yield-associated traits in groundnut accessions
 
Creator Mubai, N
Sibiya, J
Mwololo, J
Musvosvi, C
Charlie, H
Munthali, W
Kachulu, L
Okori, P
Tejada Moral, M
 
Subject Crop Yield
Groundnut
Genetics and Genomics
 
Description Yield is a complex quantitative trait largely influenced by the environment.
Direct selection for grain yield is less efficient in improving groundnut productivity.
The selection efficiency can be enhanced by exploiting the relationship
between yield and its related traits. Moreover, the use of genetically diverse parents
is essential to generate genetic variation for successful selection of genotypes in
a breeding program. Therefore, the study aimed at analysing the relationship
between grain yield and its related traits and determining the morphological
diversity among selected groundnut genotypes under natural rosette disease (GRD)
infestation. The genotypes were evaluated in a 7 × 4 alpha lattice design with three
replications. Data were collected on yield and yield-related traits. Correlation, path
coefficient and multivariate analyses were done. The results revealed that yield was
directly associated with plant height, number of pods per plant, hundred seed
weight, GRD incidence and number of secondary branches. Therefore, these traits
should be considered in selection when improving groundnut for yield. Cluster
analysis revealed existence of diversity among the evaluated groundnut genotypes with no influence of geographical origin to the clustering pattern. The Principal
Components Analysis (PCA) biplot was effective in showing the genetic distance
among the genotypes and the results were comparable with those of the cluster
analysis. Moreover, Shannon-Weaver diversity indices revealed existence of high
diversity among the genotypes, an implication that groundnut improvement for
yield is possible through selection in breeding.
 
Publisher Cogent OA
 
Date 2020-10
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11682/1/23311932.2020.pdf
Mubai, N and Sibiya, J and Mwololo, J and Musvosvi, C and Charlie, H and Munthali, W and Kachulu, L and Okori, P and Tejada Moral, M (2020) Phenotypic correlation, path coefficient and multivariate analysis for yield and yield-associated traits in groundnut accessions. Cogent Food & Agriculture, 6 (1). pp. 1-22. ISSN 2331-1932