A new soybean cultivar 'Koganesayaka' for temperate regions, with lacking three lipoxygenase isozymes
2015
Takada, Y. (NARO Western Region Agricultural Research Center (Japan). Crop Breeding and Food Functional Components Research Division) | Saruta, M. | Okabe, A. | Kikuchi, A. | Ono, S.
A new soybean [Glycine max (L.) Merr.] cultivar 'Koganesayaka' was developed at NARO Western Region Agricultural Research Center in 2014. In order to develop a cultivar lacking three lipoxygenase isozymes (L-1, L-2, L-3) for temperate regions, plants were selected from a cross between 'L-star' and 'Sachiyutaka'. The date of maturity of 'Koganesayaka' is almost same that of 'Sachiyutaka' at Zentsuji, Kagawa (Latitude 34deg 13min 37sec N, Longitude 133deg 46min 39sec E). The cultivar was classified into group IV based on the date of maturity. 'Koganesayaka' has purple flowers, gray pubescence, pointed ovate leaflets and light brown pods at maturity. It shows a determinate growth type. 'Koganesayaka' has a medium plant height. There is little occurrence of delayed leaf senescence. Yields of 'Koganesayaka' are higher than that of 'Sachiyutaka'. The seed characteristics of 'Koganesayaka' are yellowish white in ground color of seed coat, yellow in hilum color, large size seed and lacking three lipoxygenase isozymes. It is suitable for processing soy milk and tofu made from 'Koganesayaka', because of reducing a beany flavor by lipoxygenase isozymes deletion. Also, it is suitable for soy sauce and miso (soybean paste) production. Kinki, Chugoku and Shikoku district are compatible with cultivation of 'Koganesayaka'.
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