title: Waxy protein deficiency and chromosomal location of coding genes in common wheat.
abstract: Deficiency of the wheat waxy (Wx) proteins (Wx-A1, Wx-B1 and Wx-D1) was studied in 1,960 cultivars derived from several countries. Gel electrophoretic analyses revealed that the null allele for the Wx-A1 protein occurred frequently in Korean, Japanese and Turkish wheats but was relatively rare in cultivars from other countries and regions. About 48% of the wheats deficient for the Wx-B1 protein were from Australia and India. One Chinese cultivar lacked the WxD1 protein. While 9 Japanese cultivars were deficient in both the Wx-A1 and Wx-B1 proteins, no cultivars lacked both the Wx-A1 and Wx-D1 proteins, both the Wx-B1 and Wx-D1 proteins or all three Wx proteins. Two-dimensional gel electrophoresis revealed polymorphisms of the three Wx proteins that varied according to isoelectric points or molecular weight. The Wx-A1 gene coding the Wx-A1 protein and the Wx-B1 gene coding the Wx-B1 protein were localized in the distal regions of chromosome arms 7AS and 4AL, respectively, by deletion mapping using the deletion lines developed in the common wheat cultivar 'Chinese Spring'.
authors.affiliation: Okinawa Sub-tropical Station, Japan International Research Center for Agricultural Sciences, Ishigaki, 907, Okinawa, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Yamamori
authors.forename: T
authors.initials: T
authors.lastname: Nakamura
authors.forename: T R
authors.initials: TR
authors.lastname: Endo
authors.forename: T
authors.initials: T
authors.lastname: Nagamine