The Tohoku Agricultural Research Center of Japan's National Agriculture and Food Research Organization (NARO) has released a new buckwheat cultivar 'Nijiyutaka'. 'Nijiyutaka' was derived from a line selected from the progeny of a cross between 'Kuzuu-zairai' and 'Togakushizairai'. 'Nijiyutaka' has the following major agronomic characteristics : high to very high lodging resistance, black hull color, and large seed size. 'Nijiyutaka' also matures a few days later than 'Hashikami-wase' and at the same time as 'Iwate-wase' in the Morioka area of Iwate prefecture, in northern Honshu. Plant height is about 10cm more and seed yield is a little higher than in 'Hashikami-wase'. The thousand-grain weight is about 36g, and 1 L of seeds weighs about 630g. In processing tests by three flour milling companies, 'Nijiyutaka' was judged to be more suitable than 'Hashikami-wase' for making buckwheat flour and noodles. 'Nijiyutaka' appears to be most suitable for the Tohoku region and southern Japan, and can be sown in summer for harvesting in autumn.