Abstract
The use of conventional breeding methods for cassava improvement is a slow strategy, due to its long breeding cycle. However, a shorter and more reliable breeding cycle could be achieved in the field of breeding in a modern way, using development in genomic tools and improvement in genotyping. The recent technological advances particularly in the area of next-generation sequencing (NGS) have drastically transformed cassava genomics and molecular breeding. NGS techniques allowed the assembly of whole genomes in cassava crop, and with the help of reference genome sequence, cassava genotypes can be re-sequenced to show the diversity at genome-wide level. The application of NGS for genetic improvement in cassava gives high-resolution genetic maps, with robust framework. The goal of genomics-assisted cassava breeding is to improve cassava populations and breeding pipelines through the developed genomic prediction thus leading to better breeding strategies that can assist in extensive development of improved clones for varietal release. This has been demonstrated by NextGen Cassava Breeding Project in collaboration with both international and national research breeding centres, where genotyping by sequencing (GBS) of cassava cultivars revealed some functional and relevant markers that could be leveraged for cassava breeding with a view of amassing genetic gain. This review attempts to discuss the current and future advances made in genomics-assisted cassava breeding. Also aimed at discussion the ways in which advances in genomics can be used to achieve and develop improved genetic cassava materials using genome-wide association analysis, candidate gene annotation and profiling of transcript methodology, also considering marker-assisted selection and genomic selection/prediction AU: Please provide keywords for Chapter 3.
Published Version
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