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CULTIVARS

Registration of ‘N8101’ Small-Seeded Soybean

^a USDA-ARS, 3127 Ligon St., Raleigh, NC 27607
^b Dep. of Crop Science, North Carolina State Univ., Raleigh, NC 27695-7631. Reference to any specific commercial products, company, or trademark does not constitute its endorsement or recommendation by the U.S. Government

^* Corresponding author (Thomas.Carter{at}ars.usda.gov).

ABSTRACT

‘N8101’ soybean [Glycine max (L.) Merr.] (Reg. No. CV-498, PI 654355) was cooperatively developed and released by the USDA-ARS and the North Carolina Agricultural Research Service in February 2008 as a small-seeded Maturity Group VIII conventional cultivar. N8101 is the first publicly released small-seeded soybean cultivar in its maturity group and has potential use in the Japanese soyfoods market. It was derived from the cross of small-seeded germplasm NC114 and a small-seeded cultivar N7101. N8101 is adapted to the southeastern United States between 30 and 36° N latitude. In 22 USDA regional trials, N8101 exhibited a 100-seed weight of 7.3 g, 5.4 g less than that of control variety, ‘Prichard RR’. Yield of N8101 was approximately 92% of that produced by Prichard RR (2712 kg ha^–1). Over seven additional trials in North Carolina, N8101 had a 100-seed weight of 6.5 g, 1.4 g less than that of small-seeded Maturity Group VII cultivar N7103. Seed protein content was similar to that of Prichard RR, and seed carbohydrate composition was similar to that of N7103. N8101 is resistant to shattering, Soybean mosaic virus, frogeye leaf spot (Cercospora sojina Hara), and bacterial pustule [Xanthomonas campestris pv. glycines (Nakano) Dye]. The reduced yield of N8101 compared with commodity-type cultivars limits its use to specialty purposes.

Abbreviations: CP, coefficient of parentage • HPLC, high-performance liquid chromatography • OVT, Official Variety Testing • RR, Roundup Ready • USB, United Soybean Board