Registration of ‘Georgia-23RKN’ peanut

Abstract

‘Georgia-23RKN’ (Reg. no. CV-158, PI 704578) is a new high-yielding, normal-oleic, Tomato spotted wilt virus (TSWV)- and root-knot nematode (RKN) [Meloidogyne arenaria (Neal) Chitwood race 1]-resistant, medium-large seeded, runner-type peanut (Arachis hypogaea L. subsp. hypogaea var. hypogaea) cultivar that was released by the Georgia Agricultural Experiment Station in 2023. It was developed at the University of Georgia, Tifton Campus. Georgia-23RKN originated from a cross made between ‘Tifguard’ × ‘Georgia Green’. Tifguard is a normal-oleic, TSWV- and RKN-resistant runner-type peanut cultivar that was developed from a cross between ‘C-99R’ and ‘COAN’. Georgia Green is a normal-oleic, TSWV-resistant runner-type cultivar that was developed from a cross between ‘Southern Runner’ and ‘Sunbelt Runner’. Pedigree selection was practiced within the early segregating generations. Performance testing began in the F_4:6 generation with the advanced pure-line selection, GA 122544, the experimental designation of Georgia-23RKN. During the past 3 years (2015–2017) and averaged over 29 multiple location tests without nematode pressure in Georgia, Georgia-23RKN had significantly less TSWV and total disease incidence compared to Tifguard. Georgia-23RKN was also found to have a larger runner seed size than the smaller runner-type check cultivar, Georgia-14N. Georgia-23RKN combines high-yield and TSWV- and RKN-resistance with medium-large seed size and the normal-oleic trait preferred by large peanut butter manufacturers in the United States.