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A Novel Codominant Marker For Selection Of The Null Wx-B1 Allele In Wheat Breeding Programs, Mika Saito, Patricia Vrinten, Goro Ishikawa, Robert A. Graybosch, Toshiki Nakamura

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Waxy protein (granule-bound starch synthase I) is a key enzyme in the synthesis of amylose in endosperm tissue. The amylose content of wheat flour plays a significant role in determining Japanese udon noodle quality. Most wheat cultivars suitable for producing udon noodles have a low amylose level due to a lack of Wx-B1 protein conditioned by null Wx-B1 alleles. It was previously determined that the entire coding region of the wheat Wx-B1 gene is deleted in the most common null allele. However, the extent and breakpoints of the deletion have not been established. In this study, the position of the …