Characterization of West and Central African accessions from a pearl millet reference collection for agro-morphological traits and Striga resistance

Sattler, F T and Sanogo, M D and Kassari, I A and Angarawai, I I and Gwadi, K W and Dodo, H and Haussmann, B I G (2018) Characterization of West and Central African accessions from a pearl millet reference collection for agro-morphological traits and Striga resistance. Plant Genetic Resources (TSI), 16 (3). pp. 260-272. ISSN 1479-2621

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Abstract

To promote the utilization of West and Central African (WCA) genetic resources of pearl millet [Pennisetum glaucum (L.) R. Br.], this study aimed at agro-morphological characterization of selected accessions from the pearl millet reference collection, established by the Generation Challenge Program and the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT). A total of 81 accessions were included, comprising 78 landraces originating from 13, predominantly WCA countries and three improved cultivars. All 81 accessions were evaluated together with 18 checks for resistance to the parasitic weed Striga hermonthica (Del.) Benth. in an artificially infested field at one location in Niger. Determined by available seed quantity, 74 accessions were characterized together with seven checks in the rainy season 2009 in field trials under low-input and fertilized conditions in Nigeria, Niger and Mali, respectively. Wide ranges were observed for various traits. Several accessions were identified as sources for specific traits of interest, i.e. long panicles, high-grain density, earliness, Striga resistance and stable yielding across environments. The observed yield inferiority of all Genebank accessions compared with checks may indicate lost adaptation or inbreeding depression due to an insufficient effective population size during multiplication. A principal component analysis revealed an immense diversity but also strong admixture among the tested accessions, i.e. there were no clearly distinct groups. The seed of all genotypes is available from ICRISAT. The online availability of the characterization data is expected to facilitate efficient use of these pearl millet accessions by breeding programmes in WCA and worldwide.

Item Type: Article
Divisions: Research Program : West & Central Africa
CRP: UNSPECIFIED
Uncontrolled Keywords: West and Central Africa, agronomic evaluation, genetic resources, low-input, pearl millet, Striga resistance, breeding programmes, agro morphological characterization
Subjects: Mandate crops > Millets > Pearl Millet
Others > Genetics and Genomics
Others > West Africa
Others > Central Africa
Others > Gene Bank
Depositing User: Mr Ramesh K
Date Deposited: 15 May 2018 06:16
Last Modified: 05 Feb 2019 08:11
URI: http://oar.icrisat.org/id/eprint/10664
Official URL: http://dx.doi.org/10.1017/S1479262117000272
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: The financial support from the Global Crop Diversity Trust, Trust grant no: GS08024, is gratefully acknowledged. HD Upadhyaya (ICRISAT-India) kindly provided the seed from the ICRISAT genebank in Patancheru, India. In addition, the authors would like to thank the following individuals for technical assistance during seed multiplication and accession characterization: A Abarchi, H Adamaou, D Lankoande, T Boye, A Boubacar (ICRISAT-Niger), S Muhtah (LCRI-Nigeria), M Mariko (IER-Mali). The Ph.D. stipend for FT Sattler was funded by the German Ministry of Economic Cooperation and Development (BMZ, GIZ Project No: 13.1432.7-001.00 and Contract No: 81170266). Finally, we thank the McKnight Foundation Collaborative Crop Research Program for the discretionary research funds provided to BIG Haussmann.
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