Abstract
The dissection of naturally existing allelic variations in the candidate genes responsible for crucial agronomic traits is made possible by allele mining. Allele mining may now be used to analyze the precise allelic variations of functional genes found in a variety of peanut cultivars as a result of the finding, isolation, and characterization of several genes in peanut. The complex alleles serve as a reservoir of diversity to produce an array of functional genes. One of the primary mechanisms governing the evolution and development of R genes is regular sequence exchange. The generation of allele-specific markers for use in marker-assisted selection, together with the identification of new alleles and haplotypes, can be accomplished by allele mining. In modern plant breeding that is driven by genomics, allele mining can be seen as a crucial link between the efficient usage of genetic and genomic resources. The information presented here is crucial for giving the peanut breeder a valuable introduction to allele mining and its methods for the ground-breaking finding of novel alleles concealed in hereditary variation, which is essential for crop development. This chapter explores the theoretical underpinnings and use of allele mining techniques for the identification of alleles and their possible implications for peanut improvement.