Genomics-Assisted Breeding in the CGIAR Research Program on Roots, Tubers and Bananas (RTB)

Michael Friedmann, Asrat Asfaw, Noelle L. Anglin, Luis Augusto Becerra, Ranjana Bhattacharjee, Allan Brown, Edward Carey, Morag Elizabeth Ferguson, Dorcus Gemenet, Hanele Lindqvist-Kreuze, Ismail Rabbi, Mathieu Rouard, Rony Swennen and Graham Thiele
Additional contact information
Michael Friedmann: RTB, Led by the International Potato Center, Apartado 1558, Lima 12, Peru
Asrat Asfaw: IITA, PMB 5320, Oyo Road, Ibadan 200001, Oyo State, Nigeria
Noelle L. Anglin: CIP, Apartado 1558, Lima 12, Peru
Luis Augusto Becerra: CIAT, Km 17, Recta Cali–Palmira CP 763537, Apartado Aéreo 6713, Cali, Colombia
Ranjana Bhattacharjee: IITA, PMB 5320, Oyo Road, Ibadan 200001, Oyo State, Nigeria
Allan Brown: IITA, PMB 5320, Oyo Road, Ibadan 200001, Oyo State, Nigeria
Edward Carey: CIP, Apartado 1558, Lima 12, Peru
Morag Elizabeth Ferguson: IITA, PMB 5320, Oyo Road, Ibadan 200001, Oyo State, Nigeria
Dorcus Gemenet: CIP, Apartado 1558, Lima 12, Peru
Hanele Lindqvist-Kreuze: CIP, Apartado 1558, Lima 12, Peru
Ismail Rabbi: IITA, PMB 5320, Oyo Road, Ibadan 200001, Oyo State, Nigeria
Mathieu Rouard: Bioversity, Parc Scientifique Agropolis II, 1990 Boulevard de la Lironde, 34397 Montpellier, France
Rony Swennen: IITA, PMB 5320, Oyo Road, Ibadan 200001, Oyo State, Nigeria
Graham Thiele: RTB, Led by the International Potato Center, Apartado 1558, Lima 12, Peru

Agriculture, 2018, vol. 8, issue 7, 1-24

Abstract: Breeding in the CGIAR Research Program on Roots, Tubers and Bananas (RTB) targets highly diverse biotic and abiotic constraints, whilst meeting complex end-user quality preferences to improve livelihoods of beneficiaries in developing countries. Achieving breeding targets and increasing the rate of genetic gains for these vegetatively propagated crops, with long breeding cycles, and genomes with high heterozygosity and different ploidy levels, is challenging. Cheaper sequencing opens possibilities to apply genomics tools for complex traits, such as yield, climate resilience, and quality traits. Therefore, across the RTB program, genomic resources and approaches, including sequenced draft genomes, SNP discovery, quantitative trait loci (QTL) mapping, genome-wide association studies (GWAS), and genomic selection (GS), are at different stages of development and implementation. For some crops, marker-assisted selection (MAS) is being implemented, and GS has passed the proof-of-concept stage. Depending on the traits being selected for using prediction models, breeding schemes will most likely have to incorporate both GS and phenotyping for other traits into the workflows leading to varietal development.

Keywords: RTB; plant breeding; genomics-assisted breeding; genomic selection; GWAS (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2018
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