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

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