Cereal Chem 47:64 - 69.  |  VIEW ARTICLE
Wet-Milling Properties of Four Sorghum Parents and Their Hybrids.

J. R. Norris and L. W. Rooney. Copyright 1970 by the American Association of Cereal Chemists, Inc. 

A laboratory wet-milling technique was used to separate starch and peripheral endosperm fractions from Martin, Combine Kafir-60, R7078, RTx414, and their hybrids RS608, RS625, RS610, and RS626. Lower starch recovery from Martin than from the other parents had been indicated in preliminary studies. This study was made to determine the influence of Martin and Combine Kafir-60 on the wet-milling properties of hybrids resulting from crosses with R7078 and RTx414. The starch content of the whole grain of the parents and hybrids ranged from 66 to 68%, but differences were not significant. However, differences in starch recovery from parents and hybrids by the wet-milling technique were significant. Hybrids of Martin with R7078 and RTx414 gave significantly lower starch recovery and higher protein content of the starch than hybrids of Combine Kafir-60 with R7078 and RTx414. Martin and Combine Kafir-60 had significantly greater amounts of peripheral endosperm than R7078 and RTx414. Peripheral endosperm content was significantly positively correlated with protein content of the starch and negatively related to starch yield and recovery. Peripheral endosperm content of the hybrids was intermediate between the female and male parents. The protein content of the peripheral endosperm of the hybrids was not significantly influenced by the parents. This study indicates that the female parents, Martin and Combine Kafir-60, significantly influenced starch recovery and protein content of the starch.