Abstract
TifGP‐2 (Reg. No. GP‐130, PI 663944) is a runner‐type peanut (Arachis hypogaea L. subsp. hypogaea var. hypogaea) germplasm line that was released by the USDA‐ARS and the Georgia Agricultural Experiment Stations in 2010. It was developed at the University of Georgia Coastal Plain Experiment Station, Tifton, GA, and was tested under the experimental designation C724‐19‐25. TifGP‐2 is a late‐generation‐derived sister line of ‘Tifguard’, a peanut cultivar that has high resistance to both the peanut root‐knot nematode [Meloidogyne arenaria (Neal) Chitwood race 1] and Tomato spotted wilt virus (TSWV; genus Tospovirus), the cause of tomato spotted wilt. During the course of developing Tifguard, we also had the opportunity to develop this closely related sister line without nematode resistance. These late‐generation sister lines with and without nematode resistance can be valuable research tools to obtain a better understanding of the interactions of nematodes with other pathogens of peanut. The original breeding population was developed by hybridizing the TSWV‐resistant cultivar ‘C‐99R’ with the nematode resistant cultivar ‘COAN’.
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