<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Marker-Assisted Selection for Biotic Stress Resistance in Peanut"^^ . "Peanut is the second-most important legume grown worldwide. Cultivated peanut is a disomic\r\ntetraploid, 2n—4x—40, with limited genetic diversity due to a genetic bottleneck in formation of\r\nthe polyploid from ancestors A. duranensis and A. ipaensis. Consequently, resistance_to biotic stresses\r\nis limited in the cultigen; however, wild species possess strong resistances. Transfer o f these resistances\r\nis hindered by differences o f ploidy, but production o f synthetic amphidiploids, coupled\r\nwith use o f molecular markers, enables efficient gene transfer. Marker maps have been made from\r\ninterspecific crosses, and SSR-based maps from cultivated parents have been developed recently. At\r\nleast 410 resistance gene analogues have been identified. The first markers for biotic stress tolerance\r\nwere for root-knot nematode resistance and introgressed from one A. cardenasii chromosome. These\r\nand improved markers have been used for marker-assisted backcrossing, contributing to release of\r\nthree cultivars. Additional QTLs have been identified since. Early and late leafspots cause significant\r\nyield losses worldwide, and resistance depends on multiple genes. Using interspecific populations,\r\nfive resistance QTLs for early leafspot were identified using greenhouse inoculations, and five QTLs\r\nfor late leafspot were identified using detached leaf assays. Using cultivated species populations, 28\r\nQTLs were identified for LLS resistance; all but one were minor QTLs; the major QTL was donated\r\nby an interspecific introgression line parent. Rust often occurs alongside leafspots, and rust resistance\r\nwas characterized as one major QTL, plus several smaller QTLs. Marker-assisted backcrossing o f this\r\nmajor QTL has been performed into different populations. QTLs for resistance to other biotic stresses\r\nhave been identified, namely to groundnut rosette virus, Sclerotinia blight, afiatoxin contamination,\r\naphids, and tomato spotted wilt virus. Marker-assisted breeding is still in early stages, and development\r\no f more rapid and inexpensive markers from transcriptome and genome sequencing is expected\r\nto accelerate progress."^^ . "2013" . . "1" . . "Wiley Blackwell"^^ . . "Wiley Blackwell"^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "D J"^^ . "Bertioli"^^ . "D J Bertioli"^^ . . "R K"^^ . "Varshney"^^ . "R K Varshney"^^ . . "M K"^^ . "Pandey"^^ . "M K Pandey"^^ . . "N N"^^ . "Denwar"^^ . "N N Denwar"^^ . . "P"^^ . "Ozias-Akins"^^ . "P Ozias-Akins"^^ . . "J"^^ . "Chagoya"^^ . "J Chagoya"^^ . . "Y"^^ . "Chu"^^ . "Y Chu"^^ . . "S C M"^^ . "Leal-Bertioli"^^ . "S C M Leal-Bertioli"^^ . . "C C"^^ . "Holbrook"^^ . "C C Holbrook"^^ . . "M C"^^ . "Moretzsohn"^^ . "M C Moretzsohn"^^ . . "C E"^^ . "Simpson"^^ . "C E Simpson"^^ . . "M D"^^ . "Burow"^^ . "M D Burow"^^ . . "J L"^^ . "Starr"^^ . "J L Starr"^^ . . "R"^^ . "Tuberosa"^^ . "R Tuberosa"^^ . . . . . . "Marker-Assisted Selection for Biotic Stress Resistance in Peanut (PDF)"^^ . . . . . "Marker-Assisted Selection for Biotic Stress Resistance in Peanut (Other)"^^ . . . . . . "Marker-Assisted Selection for Biotic Stress Resistance in Peanut (Other)"^^ . . . . . . "Marker-Assisted Selection for Biotic Stress Resistance in Peanut (Other)"^^ . . . . . . "Marker-Assisted Selection for Biotic Stress Resistance in Peanut (Other)"^^ . . . . . . "Marker-Assisted Selection for Biotic Stress Resistance in Peanut (Other)"^^ . . . . . "HTML Summary of #7579 \n\nMarker-Assisted Selection for Biotic Stress Resistance in Peanut\n\n" . "text/html" . . . "Groundnut"@en . . . "Genetics and Genomics"@en . .