Agro-morphological characterization of pigeonpea (Cajanus cajan L. Millspaugh) landraces grown in Benin: Implications for breeding and conservation

Géofroy, K and Gustave, D and Laura, E Y L and Relique, I A and Saxena, R K and Varshney, R K and Clément, A and Alexandre, D (2020) Agro-morphological characterization of pigeonpea (Cajanus cajan L. Millspaugh) landraces grown in Benin: Implications for breeding and conservation. Journal of Plant Breeding and Crop Science, 12 (1). pp. 34-49. ISSN 2006-9758

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Abstract

Pigeonpea (Cajanus cajan L. Millspaugh) is a neglected and under-utilized crop consumed in several regions of word. In order to assess performance of pigeonpea landraces grown in Benin for useful breeding programs, 50 accessions were collected from 39 villages. These accessions were characterized by using 12 qualitative and 11 quantitative traits. Based on the seeds morphological characteristics, the 50 accessions were grouped in 12 morphotypes. However, 8 morphological classes were obtained with cluster analysis based on the unweighted pair group method with arithmetic average method using qualitative traits, whereas in principal component analysis only 5 clusters have been obtained using quantitative traits. The association/correlation among quantitative characters showed that grain yield was negatively correlated with pod width, days to 50% flowering and physiological maturity while it was positively correlated with pod length, pods per plant, branches per plant and number of seeds per pod. Based on four quantitative traits (number of pods per plant, number of seeds per pod, 100 seed weight, and early maturity), the 23 accessions from cluster 3 of whom kk5 (Ekloui), kk8 (Nontchiovi kloui), kk15 (Otili founfoun), kk18 (Klouékoun wéwé), kk22 (Otili), kk23 (CA monlikoun) and kk28 (Hounkoun wéwé) have been recommended as good sources of germplasm for improving the pigeonpea productivity. Further characterization using molecular techniques as well as conservation attention should be conducted to confirm the present result and maintain the germplasm for future breeding programs.

Item Type:	Article
Divisions:	Research Program : Genetic Gains
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Benin, Cluster analysis, Morphological diversity, Pigeonpea, Quantitative characters, Selection
Subjects:	Mandate crops > Pigeonpea Others > Genetics and Genomics
Depositing User:	Mr Arun S
Date Deposited:	05 Sep 2020 16:24
Last Modified:	05 Sep 2020 16:24
URI:	http://oar.icrisat.org/id/eprint/11596
Official URL:	https://doi.org/10.5897/JPBCS2019.0836
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	This study was carried out by the Laboratory of Biotechnology, Genetic Resources and Plant and Animal Breeding. The authors thank the following individuals: Marcelin AGOSSOU and Thomas TONON for establishing and maintaining field trials; Paulin SEDA, MSc researchers at the Laboratory of Molecular genetic and genomes analysis (LGMAG) of the Faculty of Sciences and Technology of the University of Abomey- Calavi for technical assistance during accession characterization.
Links:	Google Scholar

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