Translational Genomics in Crop Breeding for Biotic Stress Resistance: An Introduction uri icon

abstract

  • Biotic stresses pose a major threat to crop productivity. Crops are challenged by a plethora of bioticstresses, but only a limited number of key pests and diseases cause the vast majority of economiclosses in a particular crop. Plant protection measures such as application of pesticides and deploymentof resistant gene(s)/quantitative trait loci (QTLs) into cultivars have so far been quite successfulin curtailing the losses; however, these measures have also led to the constant evolution of newbiotypes/pathotypes/strains/races of pest and disease organisms. Hence, there is a continuous needto identify genomic regions that can impart resistance against these variants. The availability oflarge-scale genomic resources in many crop species has enhanced our understanding on the path todeveloping host-plant resistance. As a result, numerous race-specific gene(s) and QTLs have nowbeen identified and cloned with the help of molecular markers. It is quite exciting that these genomicregions are being introgressed into breeding programs of many crops. The objective of this book is tocritically review the current availability and utilization of genomic tools for major biotic stresses inimportant cereals, legumes, vegetables, and tuber and oilseed crop. The book also summarizes thesuccess stories achieved through application of genomics-assisted breeding (GAB), as well as thescope for deployment of modem breeding methods such as marker-assisted backcrossing (MABC)and genomic selection in the era of next-generation sequencing (NGS) technologies, which have thepotential to advance the genetic gains for enhancing resilience against biotic stress. This chaptersummarizes highlights of different chapters included in the book that is expected to be a resourcefor young researchers, GAB practitioners, and policy makers for employing better strategies towardachieving food security

publication date

  • 2013