Search National Agricultural Library Digital Collections

NALDC Record Details:

Effect of the grain protein content locus Gpc-B1 on bread and pasta quality

Permanent URL:
http://handle.nal.usda.gov/10113/42028
Abstract:
Grain protein concentration (GPC) affects wheat nutritional value and several critical parameters for bread and pasta quality. A gene designated Gpc-B1, which is not functional in common and durum wheat cultivars, was recently identified in Triticum turgidum ssp. dicoccoides. The functional allele of Gpc-B1 improves nitrogen remobilization from the straw increasing GPC, but also shortens the grain filling period resulting in reduced grain weight in some genetic backgrounds. We developed isogenic lines for the Gpc-B1 introgression in six hexaploid and two tetraploid wheat genotypes to evaluate its effects on bread-making and pasta quality. In common wheat, the functional Gpc-B1 introgression was associated with significantly higher GPC, water absorption, mixing time and loaf volume, whereas in durum wheat, the introgression resulted in significant increases in GPC, wet gluten, mixing time, and spaghetti firmness, as well as a decrease in cooking loss. On the negative side, the functional Gpc-B1 introgression was associated in some varieties with a significant reduction in grain weight, test weight, and flour yield and significant increases in ash concentration. Significant gene × environment and gene × genotype interactions for most traits stress the need for evaluating the effect of this introgression in particular genotypes and environments.
Author(s):
Brevis, Juan Carlos , Morris, Craig F. , Manthey, Frank , Dubcovsky, Jorge
Subject(s):
Triticum aestivum , wheat , Triticum turgidum subsp. dicoccoides , lines , genes , protein content , seeds , introgression , hybridization , breadmaking quality , food processing quality , pasta , food quality , breads , dough development , rheological properties , wheat flour , genotype-environment interaction
Format:
p. 357-365.
Note:
Includes references
Source:
Journal of cereal science 2010 May, v. 51, issue 3
Language:
English
Year:
2010
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
File:
Download [PDF File]
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.