1a.Objectives (from AD-416):
Mapping novel genes for SCN resistance and breeding for soybean cultivar with SCN resistance in maturity group II-IV.
1b.Approach (from AD-416):
The objective will be achieved by mapping QTL for SCN resistance in a mapping population developed by USDA-ARS scientist in Tennessee by genotyping with SNP markers. He will conduct the phenotyping on it. The SCN resistant breeding lines will be developed by crossing SCN resistant soybean lines from other states to the SCN resistant cultivars from Ohio and selecting for the resistant progeny.
This is a one year project in which we crossed SCN resistant line JTN-5203 from TN to four maturity group II-IV high-yielding soybean breeding lines/cultivars from Ohio. QTL mapping for SCN in a previously developed mapping population is in progress, 94 lines from the population were genotyped with 200 single nucleotide polymorphism markers, phenotyping is in progress for SCN responses.
This project expands on objective 1 (Identify novel quantitative trait loci for soybean cyst nematode resistance).