A new rice [Oryza sativa] variety 'Masshigura'

• Published in: Bulletin of Aomori Agriculture and Forestry Research Center (Japan) no. 41
• Main Authors: Mikami, T.(Aomori-ken. Agriculture and Forestry Research Center, Kuroishi (Japan)), Kawamura, Y, Yokoyama, H, Takadate, M, Kobayashi, W, Tateyama, M, Maeda, K, Nakahori, T, Oyamada, Z
• Format: Journal Article
• Language: Japanese
• Published: 01.03.2007
• Subjects: AMELIORATION DES PLANTES; APPETABILITE; FITOMEJORAMIENTO; ORYZA SATIVA; PALATABILIDAD; PALATABILITY; PLANT BREEDING; RESISTANCE AUX FACTEURS NUISIBLES; RESISTANCE TO INJURIOUS FACTORS; RESISTENCIA A AGENTES DANINOS; VARIEDADES; VARIETE; VARIETIES
• ISSN: 0388-7650

We bred a new rice variety 'Masshigura' at the Aomori Agriculture and Forestry Research Center. It is a nonglutinous rice variety, with medium maturity, good eating quality and highly blast resistance. It was selected from the progeny of a cross between 'Ouu 341' and 'Yamagata 40' conducted in 1993. We selected one promising line in the F7 progenies, and named 'Aokei 138'. It had been tested for local adaptability in Aomori Prefecture since 1999. It was adopted as a pre-recommendation variety in 2004, and as a recommended variety in Aomori Prefecture and named as 'Masshigura' in 2005. Agronomic characters of 'Masshigura' evaluated are as follows; (1) It belongs to the medium maturing group in Aomori Prefecture. Its date of heading is 1 day later than that of 'Mutsuhomare' and 1 to 2 days later than that of 'Yumeakari'. Its date of maturity is nearly equal to that of 'Mutsuhomare' and 2 to 3 days later than that of 'Yumeakari'. (2) The plant type is partial panicle weight type with short culm. (3) The lodging resistance is nearly equal to those of 'Mutsuhomare' and 'Yumeakari'. (4) The tolerance to sterility caused by low temperature at booting stage is slightly superior to that of 'Mutsuhomare' and slightly inferior to that of 'Yumeakari'. (5) It is estimated to have true blast resistant genes, Pia and Pii. Its field resistances for leaf blast and panicle blast are slightly superior to those of 'Mutsuhomare' and obviously superior than those of 'Yumeakari'. (6) The grain yield is slightly lower than that of 'Mutsuhomare' and slightly higher than that of 'Yumeakari'. (7) The appearance grade of grain is as good as those of 'Mutsuhomare' and 'Yumeakari'. (8) The eating quality of boiled rice is obviously superior to that of 'Mutsuhomare' and slightly superior to that of 'Yumeakari'. It is excellent and as good as that of 'Tsugaruroman'.