Screening a Recombinant Inbred Line of Soybeans [Glycine Max (L.) Merr.] for Resistance to Southern Root-Knot Nematode (Meloidogyne incognita I.) to Create Genetic Markers for the Selection of Resistant Varieties.

Inevitably the success of a soybean variety is measured by yield. In order for a variety to be high yielding it must possess the genetic potential for high yield and also the traits to prevent pathogens and competition from reducing the yield. Meloidogyne incognita I. (Mi) has the potential to create large amounts of yield loss in soybean (Glycine max L. (Merr.)). The objectives of the current study were to;  1) screen within the greenhouse an F_5:7 recombinant inbred line (RIL) population (n=96) from a cross between LS97-1610 (resistant line) with ‘Spencer‘ (susceptible cultivar) for resistance to Mi ; 2) genotype the population with more than 1,500 single nucleotide polymorphism (SNP) markers;  3) identify associations between phenotypic and DNA marker data using JMP® genomics; and  4) create useful single sequence repeat (microsatellite) markers for accelerated selection from data obtained from JMP®. This information will provide plant breeders with microsatellite markers to efficiently screen new varieties for resistance to M. incognita.