High amylose wheat starch and wheat containing the same

Abstract

Wheat starch of the present invention is obtained from endosperm of a seed of wheat which is modified to lack starch granule protein-1 (SGP-1). The wheat starch has an apparent amylose content of about 35% or more. Wheat flour of the present invention Is obtained from endosperm of a seed of wheat which is modified to lack SGP-1. Wheat of the present invention is modified to lack SGP-1. The wheat flour and the wheat comprise wheat starch which has an apparent amylose content of about 35% or more.

What is claimed is:  
     
         1 . Wheat starch obtained from endosperm of a seed of wheat which is modified to lack starch granule protein-1 (SGP-1), wherein the wheat starch has an apparent amylose content of about 35% or more.  
     
     
         2 . The wheat starch of    claim 1   , wherein the apparent amylose content Is from about 37% to about 40%.  
     
     
         3 . The wheat starch of    claim 1   , wherein the wheat is a hexaploid wheat which lacks SGP-A1, SGP-B1 and SGP-D1.  
     
     
         4 . The wheat starch of    claim 3   , wherein the hexaploid wheat is obtained by crossing a first wheat lacking a first protein selected from the group consisting of SGP-A1, SGP-B1 and SGP-D1, with a second wheat lacking a second protein which differs from the first protein and is selected from the group consisting of SGP-A1, SGP-B1 and SGP-D1, followed by further crossing the cross of the first wheat and the second wheat with a third wheat lacking a third protein which differs from the first and second proteins and is selected from the group consisting of SGP-A1, SGP-B1 and SGP-D1.  
     
     
         5 . The wheat starch of    claim 3   , wherein the hexaploid wheat is obtained by crossing (i) Chousen 30 or Chousen 57, (ii) Turkey 116, and (iii) Kanto 79 in an arbitrary order.  
     
     
         6 . Wheat flour obtained from endosperm of a seed of wheat which is modified to lack SGP-1, comprising wheat starch which has an apparent amylose content of about 35% or more.  
     
     
         7 . The wheat flour of    claim 6   , wherein the apparent amylose content is from about 37% to about 40%.  
     
     
         8 . The wheat flour of    claim 6   , wherein the wheat is a hexaploid wheat which lacks SGP-A1, SGP-B1 and SGP-D1.  
     
     
         9 . The wheat flour of    claim 8   , wherein the hexaploid wheat is obtained by crossing a first wheat lacking a first protein selected from the group consisting of SGP-A1, SGP-B1 and SGP-D1, with a second wheat lacking a second protein which differs from the first protein and is selected from the group consisting of SGP-A1, SGP-B1 and SGP-D1, followed by further crossing the cross of the first wheat and the second wheat with a third wheat lacking a third protein which differs from the first and second proteins and is selected from the group consisting of SGP-A1, SGP-B1 and SGP-D1.  
     
     
         10 . The wheat flour of    claim 8   , wherein the hexaploid wheat is obtained by crossing (i) Chousen 30 or Chousen 57, (ii) Turkey 116, and (lll) Kanto 79 in an arbitrary order.  
     
     
         11 . Wheat which is modified to lack SGP-1, comprising wheat. starch which has an apparent amylose content of about 35% or more.  
     
     
         12 . The wheat of    claim 11   , wherein the apparent amylose content is from about 37% to about 40%.  
     
     
         13 . The wheat of    claim 11   , which is a hexaploid wheat which lacks SGP-A1, SGP-B1 and SGP-D1.  
     
     
         14 . The wheat of    claim 13   , wherein the hexaploid wheat is obtained by crossing a first wheat lacking a first protein selected from the group consisting of SGP-A1, SGP-B1 and SGP-D1, with a second wheat lacking a second protein which differs from the first protein and is selected from the group consisting of SGP-A1, SGP-B1 and SGP-D1, followed by further crossing the cross of the first wheat and the second wheat with a third wheat lacking a third protein which differs from the first and second proteins and is selected from the group consisting of SGP-A1, SGP-B1 and SGP-D1.  
     
     
         15 . The wheat of    claim 13   , wherein the hexaploid wheat is obtained by crossing (i) Chousen 30 or Chousen 57, (ii) Turkey 116, and (iii) Kanto 79 in an arbitrary order.