Principal component analysis of early generation sorghum lines for yield-contributing traits and resistance to midge

Hamidou, M and Souleymane, O and Ba, M N and Danquah, E and Kapran, I and Gracen, V and Ofori, K (2018) Principal component analysis of early generation sorghum lines for yield-contributing traits and resistance to midge. Journal of Crop Improvement (TSI). pp. 1-9. ISSN 1542-7528

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Abstract

Sorghum (Sorghum bicolor L. Moench) is a staple food crop in Niger. Its production is constrained by sorghum midge (Stenodiplosis sorghicola Coquillett 1898) and by the use of low-yielding, local sorghum varieties. To improve sorghum productivity, farmers need high-yielding and midge-resistant sorghum cultivars. The objective of this research is to evaluate genetic diversity among sorghum inbred lines for yield, yield-contributing traits, and resistance to midge. Two-hundred and eighty-two lines (280 recombinant inbred lines plus two checks) were evaluated at two experimental sites in Niger. An alpha (0.1) lattice design with two replications was used to conduct the trial. Principal component analysis was used to determine the relationship between grain yield and resistance to midge. The first three principal components (PC) accounted for 56.22% of the total genotypic variation. Based on the similarity of traits within and between members of clusters, genotypes were divided into 18 clusters. Genetic variability was present for the traits under study in the tested germplasm. Hybridization of midge-resistant genotypes from different clusters should be able to yield new genotypes combining high yield and other desirable yield-contributing traits.

Item Type: Article
Divisions: Research Program : West & Central Africa
CRP: CGIAR Research Program on Dryland Cereals
Uncontrolled Keywords: Cluster analysis; Genetic diversity; Midge resistance; Niger; Yield; Sorghum
Subjects: Mandate crops > Sorghum
Others > Genetics and Genomics
Others > Germplasm Collection
Depositing User: Mr Ramesh K
Date Deposited: 22 Oct 2018 10:58
Last Modified: 22 Oct 2018 10:58
URI: http://oar.icrisat.org/id/eprint/10907
Official URL: http://dx.doi.org/10.1080/15427528.2018.1498423
Projects: UNSPECIFIED
Funders: Alliance for Green Revolution in Africa (AGRA) and the CGIAR Research Program on Dryland Cereals
Acknowledgement: The authors acknowledge Alliance for Green Revolution in Africa (AGRA) for funding this work. This work has also been undertaken as part of the CGIAR Research Program on Dryland Cereals.
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