Location: Cereal Crops Research
Title: Quality characteristics and protein composition of durum wheat cultivars released in the last 50 yearsAuthor
MALALGODA, MANEKA - North Dakota State University | |
Ohm, Jae-Bom | |
MANTHEY, FRANK - North Dakota State University | |
ELIAS, ELIAS - North Dakota State University | |
SIMSEK, SENAY - North Dakota State University |
Submitted to: Cereal Chemistry
Publication Type: Peer Reviewed Journal Publication Acceptance Date: 3/6/2019 Publication Date: 3/12/2019 Publication URL: https://handle.nal.usda.gov/10113/6558885 Citation: Malalgoda, M., Ohm, J., Manthey, F.A., Elias, E.M., Simsek, S. 2019. Quality characteristics and protein composition of durum wheat cultivars released in the last 50 years. Cereal Chemistry. 96:508–519. https://doi.org/10.1002/cche.10151. DOI: https://doi.org/10.1002/cche.10151 Interpretive Summary: Most US durum wheat is grown in the state of North Dakota. Thus, breeding efforts in the region have resulted in many durum wheat cultivars being released in the last decades. The main goals of durum wheat breeding are to improve grain yield, resistance to biotic and abiotic stresses, as well as end-use quality characteristics. In this study, thirty two durum wheat cultivars released between 1956 and 2013 were analyzed for changes in end-use quality characteristics, protein composition and their association with improvements in durum wheat quality characteristics. The results indicated that certain durum quality parameters, such as kernel weight, dough mixing properties and pasta making characteristics improved over the last 50 years of durum wheat breeding. The results did not show increases in total protein quantity; however, changes in protein composition were observed. The changes in protein composition were positively associated with improvements in dough and pasta cooking quality traits seen in durum wheat cultivars released in recent years. This study specifically identified a protein fraction, which contributes towards favorable dough and pasta quality characteristics. This information would be very helpful in screening durum varieties that have good mixing and pasta cooking quality characteristics in durum wheat breeding program and pasta industry. Technical Abstract: Most US durum wheat is grown in the state of North Dakota. Thus, breeding efforts in the region have resulted in many durum wheat cultivars being released in the last decades. The main goals of durum wheat breeding are increased yield, resistance to biotic and abiotic stresses, as well as improved end-use quality characteristics. In this study, thirty two durum wheat cultivars released between 1956 and 2013 were analyzed for changes in end-use quality characteristics, protein composition and their association with improvements in durum wheat quality characteristics. The results indicated that certain durum quality parameters, such as kernel weight, dough mixing properties and pasta making characteristics improved over the last 50 years of durum wheat breeding. The results did not show increases in total protein quantity; however, changes in protein composition were observed. SDS extractable LMW polymeric proteins and gliadins decreased while; SDS unextractable polymeric proteins increased over the years. These changes in protein composition were positively correlated with improvements in dough and pasta cooking quality traits seen in durum wheat cultivars released in recent years. In conclusion, this study shows that increases in SDS unextractable polymeric proteins contributes towards favorable dough and pasta quality characteristics. |