ABSTRACT
This chapter covers applications and types of molecular marker technology that apply to the mapping of resistance to chili anthracnose. The molecular marker applications include genetic and physical mapping, quantitative trait loci (QTL) analysis, association mapping, genetic diversity, and comparative genomics. The molecular marker technology has been reviewed according to its developmental phases, including first-, second-, and third-generation markers. The current marker technology is based on next generation sequencing, used primarily to discover single nucleotide polymorphisms (SNPs), which are the simplest and most abundant markers in any genome. Technology to detect SNPs for genotyping is also reviewed. HR resistance to chili anthracnose is a desirable trait but difficult to select due to the complicated host–pathogen interaction and the fruit maturity factor. The selection can be efficiently improved with the aid of molecular markers. Also reported is the current status of molecular mapping of resistance to chili anthracnose, as well as studies of gene expression in relation to anthracnose resistance.
