Annotation of Trait Loci on Integrated Genetic Maps of Arachis Species uri icon

abstract

  • Peanut or groundnut (Arachis hypogaea L.) is second, behind soybean, in theworld?s legume oilseed market. In 2012, global production was 41.2metric tonsfrom an area of 24.7million hectares (FAOSTAT, 2014). Yield of peanut understressed environments is an ultimate goal of improvement for enhanced productionas it is usually susceptible to a range of abiotic and biotic stresses, such asdrought, tomato spotted wilt virus (TSWV), early leaf spot (ELS) and late leafspot (LLS), nematodes, rust, and aflatoxin contamination (Guo et al., 2012a).However, cultivated peanut is an allotetraploid (2n=4x=40) with a largegenome, which greatly complicates interpretation of genomic data comparedwith the diploid wild relatives (2n=2x=20) (Guo et al., 2013). It is difficult totransfer alleles from wild species to cultivated peanuts (Simpson, 1991). Forthe last ten years, extensive efforts in the area of peanut genomics have resultedin a large number of genetic and genomic resources such as mapping populations,expressed sequence tags (ESTs), a wide range of molecular markers,transcriptome and proteomics (Guo et al., 2013; Katam et al., 2014; Varshneyet al., 2013). These genetic and genomic resources have been successfully usedto construct genetic maps, to identify quantitative trait loci (QTLs) of traits ofAuthor's personal copy164 PeanutsPeanuts, First Edition, 2016, 163-207interest, and to conduct marker-assisted selection and association mapping forpeanut improvement (Pandey et al., 2014a)

publication date

  • 2016
  • 2016