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

Authors :
Friedmann, Michael
Asfaw, Asrat
Anglin, Noelle L.
Becerra, Luis Augusto
Bhattacharjee, Ranjana
Brown, Allan
Carey, Edward
Ferguson, Morag Elizabeth
Gemenet, Dorcus
Lindqvist-Kreuze, Hanele
Rabbi, Ismail
Rouard, Mathieu
Swennen, Rony
Thiele, Graham
Source :
Agriculture; Basel; Jul2018, Vol. 8 Issue 7, p89, 1p
Publication Year :
2018

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. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
20770472
Volume :
8
Issue :
7
Database :
Complementary Index
Journal :
Agriculture; Basel
Publication Type :
Academic Journal
Accession number :
131894698
Full Text :
https://doi.org/10.3390/agriculture8070089