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Review
. 2016 Dec 27:7:221.
doi: 10.3389/fgene.2016.00221. eCollection 2016.

Genomic Selection in the Era of Next Generation Sequencing for Complex Traits in Plant Breeding

Javaid A Bhat  1 , Sajad Ali  2 , Romesh K Salgotra  3 , Zahoor A Mir  2 , Sutapa Dutta  1 , Vasudha Jadon  1 , Anshika Tyagi  2 , Muntazir Mushtaq  3 , Neelu Jain  1 , Pradeep K Singh  1 , Gyanendra P Singh  1 , K V Prabhu  1
Affiliations
Review

Genomic Selection in the Era of Next Generation Sequencing for Complex Traits in Plant Breeding

Javaid A Bhat et al. Front Genet. .

Abstract

Genomic selection (GS) is a promising approach exploiting molecular genetic markers to design novel breeding programs and to develop new markers-based models for genetic evaluation. In plant breeding, it provides opportunities to increase genetic gain of complex traits per unit time and cost. The cost-benefit balance was an important consideration for GS to work in crop plants. Availability of genome-wide high-throughput, cost-effective and flexible markers, having low ascertainment bias, suitable for large population size as well for both model and non-model crop species with or without the reference genome sequence was the most important factor for its successful and effective implementation in crop species. These factors were the major limitations to earlier marker systems viz., SSR and array-based, and was unimaginable before the availability of next-generation sequencing (NGS) technologies which have provided novel SNP genotyping platforms especially the genotyping by sequencing. These marker technologies have changed the entire scenario of marker applications and made the use of GS a routine work for crop improvement in both model and non-model crop species. The NGS-based genotyping have increased genomic-estimated breeding value prediction accuracies over other established marker platform in cereals and other crop species, and made the dream of GS true in crop breeding. But to harness the true benefits from GS, these marker technologies will be combined with high-throughput phenotyping for achieving the valuable genetic gain from complex traits. Moreover, the continuous decline in sequencing cost will make the WGS feasible and cost effective for GS in near future. Till that time matures the targeted sequencing seems to be more cost-effective option for large scale marker discovery and GS, particularly in case of large and un-decoded genomes.

Keywords: GBS; GEBVs; complex traits; crop improvement; genomic selection.

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Figures

FIGURE 1
FIGURE 1
Showing the different steps of genomic selection (GS) used for crop improvement program.
FIGURE 2
FIGURE 2
Showing the different steps of GS for complex traits as well as its impact on agriculture growth and global hunger.
FIGURE 3
FIGURE 3
Role of next-generation sequencing (NGS) based marker technologies and high-throughput phenotyping (HTP) on GS. Both NGS and HTP occupy a critical position in the precise estimation of GEBV that predict the breeding value of individuals in a breeding population using GS.
See this image and copyright information in PMC

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