Location: Soybean and Nitrogen Fixation ResearchTitle: Registration of ‘N8101’ small-seeded soybean) Author
Submitted to: Journal of Plant Registrations
Publication Type: Peer reviewed journal
Publication Acceptance Date: 9/3/2008
Publication Date: 1/1/2009
Citation: Carter Jr, T.E., Burton, J.W., Rzewnicki, P.E., Villagarcia, M.R., Fountain, M.O., Taliercio, E.W., Bowman, D. 2009. Registration of ‘N8101’ small-seeded soybean. Journal of Plant Registrations, 3:22-27. Interpretive Summary: This publication describes the characteristics of a new soybean cultivar (N8101) released for the soyfoods market. This variety is intended for production in the southern United States for export to Japan. Its extremely small seed size (the smallest ever released for farm use in the USA) makes it desirable in that subset of the soyfoods market know as the natto market. Natto is a breakfast food eaten in southern Japan that fills a cultural role similar to that of grits in the southern USA. Small seed size is a requirement for making the high quality natto demanded by the Japanese consumer. This new cultivar has seed that are sufficiently small to give it an edge in this highly competitive market.
Technical Abstract: ‘N8101’ soybean 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 USA between 30 and 36° N latitude. In 22 USDA regional trials, N8101 exhibited a 100-seed weight of 7.3 g, which was 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, which was 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 and bacterial pustule. The reduced yield of N8101, compared to commodity-type cultivars, limits its use to specialty purposes.