Registration of ‘Lariat’ Peanut

Abstract

‘Lariat’ (Reg. No. CV‐134, PI 676980) is a high‐oleic runner‐type peanut (Arachis hypogaea L. subsp. hypogaea var. hypogaea) that has enhanced Sclerotinia blight (caused by Sclerotinia minor Jagger) resistance when compared to the cultivar Red River Runner. Lariat was released cooperatively by the USDA‐ARS and the Oklahoma Agricultural Experiment Station in 2016. Lariat (experimental designation ARSOK‐R35) is the result of a cross between cultivar Red River Runner × PI 274193 in the USDA germplasm collection. In advanced line disease trials conducted over 5 yr, Lariat averaged only 12% incidence of Sclerotinia blight, whereas Red River Runner averaged 20% and the susceptible runner‐type check cultivar Flavor Runner 458 averaged 47%. Furthermore, Lariat does not exhibit a yield boost or significant reduction in disease incidence on fungicide application, as does Red River Runner. Thus, Lariat is greatly enhanced in resistance to Sclerotinia blight compared with Red River Runner and will not require fungicide application to increase yields. Results from Oklahoma state variety trials demonstrated that Lariat is indistinguishable from Red River Runner with regards to yield and grade, thus maintaining those highly desirable traits. Production of Lariat in fields where Sclerotinia blight is present will increase profits for the grower by $200 to $500 ha−1.