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ARS Home » Research » Publications at this Location » Publication #337794
Title: Registration of 'Lariat' peanut

Author
item Chamberlin, Kelly
item Bennett, Rebecca
item DAMICONE, JOHN - Oklahoma State University

Submitted to: Journal of Plant Registrations
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 5/24/2017
Publication Date: 1/18/2018
Citation: Chamberlin, K.D., Bennett, R.S., Damicone, J.P. 2018. Registration of 'Lariat' peanut. Journal of Plant Registrations. 12(1):36-42.

Interpretive Summary: Lariat is a high-oleic runner-type peanut (Arachis hypogaea L. subsp. hypogaea var. hypogaea) that contains a new source of Sclerotinia blight resistance found in USDA peanut germplasm accession PI 274193. Lariat retains all desired traits of Red River Runner, including excellent grade and yield. However, Lariat does not demonstrate any delayed germination (as does Red River Runner) and is greatly improved in resistance to fungal disease such as Sclerotinia blight and pod rot. Advanced line disease trials indicated that Lariat averaged only 10% incidence of Sclerotinia blight where Red River Runner averaged 22% and the susceptible runner-type check averaged 51%. Furthermore, Lariat does not exhibit a yield boost or significant reduction in disease incidence upon fungicide application, as does Red River Runner. Thus, Lariat is greatly enhanced in resistance to Sclerotinia blight when compared to Red River Runner and will not require fungicide application to increase yields. These tests also indicate Lariat is enhanced in pod rot resistance. Production of Lariat in fields where Sclerotinia blight is present will increase profits for the grower by $150-$200/A.

Technical Abstract: 'Lariat' is a high-oleic runner-type peanut (Arachis hypogaea L. subsp. hypogaea var. hypogaea) that has enhanced Sclerotinia blight and pod rot tolerance when compared to the cultivar Red River Runner. 'Lariat' (experimental designation ARSOK-R35) is the result of a cross between cultivar Red River Runner X PI 274193 of the USDA germplasm collection. Advanced line disease trials indicated that 'Lariat' averaged only 10% incidence of Sclerotinia blight where Red River Runner averaged 22% and the susceptible runner-type check averaged 51%. Furthermore, 'Lariat' does not exhibit a yield boost or significant reduction in disease incidence upon fungicide application, as does Red River Runner. Thus, 'Lariat' is greatly enhanced in resistance to Sclerotinia blight when compared to Red River Runner and will not require fungicide application to increase yields. These tests also indicate 'Lariat' is enhanced in pod rot resistance. Results from Oklahoma state variety tests demonstrate 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 $150-$200/A. The purpose for releasing 'Lariat' is to provide peanut producers with a high-oleic runner cultivar that not only has excellent grade and yield, but also offers an outstanding fungal resistance package that will reduce fungicide application and therefore increase producers' profits.