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Agriculturae Conspectus Scientificus, Vol. 88 No. 1, 2023.

Original scientific paper

Phenotypic Variability of Morphological and Nutritional Parameters of Pepper (Capsicum Spp) Accessions in the Derived Savanna Agro-Ecology of Nigeria

Ibrahim Akintunde Raji ; Crop Production and Soil Science Department, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Adesike Oladoyin Kolawole orcid id orcid.org/0000-0001-9061-3342 ; Ladoke Akintola University of Technology PMB 4000, Ogbomoso
Solomon Adeyemi Oyekale ; Crop Production and Soil Science Department, Ladoke Akintola University of Technology, Ogbomoso, Nigeria
Dorcas Olubunmi Ibitoye orcid id orcid.org/0000-0002-3477-5723 ; Genetic Resources Unit, National Horticultural Research Institute, Ibadan, Nigeria
Olaide Ruth Aderibigbe ; Product Development Programme, National Horticultural Research Institute, Ibadan, Nigeria

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Abstract

Variability studies on newly collected accessions and identification of superior genotypes enhances their suitability for breeding programmes. This study was aimed to estimate variation and assess the mean performance of pepper accessions collected across Nigeria. The study evaluated eighteen pepper genotypes and the experiment was laid out in a randomized complete block design with three replicates. Analysis of variance showed significant (P < 0.01) differences among accessions for all measured, except for number of fruits per plant. Correlation coefficients ranged from -0.27 to 0.84 and the strongest relationship was observed between stem colour and fruit length (r = 0.84, P < 0.001). Strong significant (P < 0.001) correlations between several traits were observed and fruit yield was either positively or negatively associated with other traits. Results from principal component analysis showed that the first six principal components accounted for 86 % of the total variability among the accessions. Cluster analysis differentiated the accessions and formed three distinct groups which were not in accordance with their source of collection. Accession NHPP-0144 combined high fruit yield with other desirable agronomic traits. Other promising accessions were NHPP-0137, NHPP 0319, NHPP-0332 and NHPP-0334 which possess favourable genes for yield potential and quality traits, a basis for future selection in pepper breeding programmes.

Keywords

breeding programme, pre-breeding, qualitative traits, quantitative traits, selection, variation

Hrčak ID:

296226

URI

https://hrcak.srce.hr/296226

Publication date:

22.3.2023.

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