Registration of TifGP-3 and TifGP-4 peanut germplasm lines

Summary: Late leaf spot (LLS) disease caused by Nothopassalora personata is prevalent in peanut growing regions, but chemical control can be expensive and difficult. This study aimed to determine LLS resistance conferred by introgressed segments in families from TifNV-High O/L x IAC 322, finding consistent levels of resistance in the A02-top/A03-bottom family. Late-season field disease ratings were found to correlate with the entire LLS infection progression, and in vitro parameters can be used to predict LLS resistance in field conditions.