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CULTIVARS

Registration of ‘Ashtabula’ Soybean

^a Dep. of Plant Sciences, North Dakota State Univ., Fargo, ND 58108-6050
^b Dep. of Plant Pathology, North Dakota State Univ., Fargo, ND 58108
^c Dep. of Soil Science, North Dakota State Univ., Fargo, ND 58108. Research supported by grants from the North Dakota Soybean Council

^* Corresponding author (Ted.Helms{at}ndsu.edu).

ABSTRACT

‘Ashtabula’ soybean [Glycine max (L.) Merr.] (Reg. No. CV-500, PI 655938) was first tested as ND02-2367 and was released in January 2009 by the North Dakota Agricultural Experiment Station, North Dakota State University to provide producers with a Maturity Group 0 conventional cultivar (0.4), generally adapted as a full-season cultivar from 46 to 48° N latitude. Ashtabula was evaluated by the North Dakota State University soybean breeding program in advanced yield trials for a total of 24 location-years that included 2005 to 2008. Testing for iron deficiency chlorosis (IDC) was conducted in 2005 at four sites located in eastern North Dakota, based on three replicates per site. Screening for resistance to race 4 of Phytophthora sojae (M.J. Kaufmann & J.W. Gerdemann) was conducted using the hypocotyl-injection method. Ashtabula was released because it has resistance to race 4 of Phytophthora sojae, high yield in North Dakota environments, lodging resistance, and tolerance to iron deficiency.

Abbreviations: IDC, iron deficiency chlorosis • NDSU, North Dakota State University