Amylose-extender dull

Although low levels of WSP have been reported in ae du kernels (Table 3.5), Black et al.23 concluded that no phytoglycogen accumulates in ae du kernels in a dent background. In contrast, kernels of ae du in a sweet com background produce numerous plastids with one or two starch granules surrounded by a thick layer of non-crystalline phytoglycogen-like polysaccharide.43 

Widely varying amylose percentages have been reported for du su starch samples in a dent background when measured by the blue value procedure (Table 3.6). In four 

The mature du wx kernel phenotype differs from that of either du or wx (Table 3.3). Dry weights of mature kernels are similar to those of du and wx and slightly less than those of normal 12 Sugar concentrations are higher and starch concentrations are lower than those in either normal, du or wx immature270 or mature272 kernels. 

Starch in the double mutant du wx is essentially 100% amylopectin thus, the wx mutant is epistatic to du. The absorbance maximum and extinction coefficient of the du wx branched polysaccharide-iodine complex are the same as for wx (Table 

However, du wx amylopectin has a reduced proportion of long B-chains, and an increased proportion of short B-chains, similar to du amylopectin.253,254 390,392 406 When the wx-a allele is combined with du, du wx-a starch contains 9% amylose, reflecting the increased amylose conditioned by the wx-a allele alone.283 

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Figure 2. High-performance size exclusion chromatographic profiles at 62.7% solubilized amylomaize V, 74.0% solubilized amylomaize VII and 92.0% solubilized amylose extender dull (aedu) maize starch solubilized by microwave energy a amy V,...

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