Localization of QTLs controlling  starch and neutral detergent fiber of durum wheat grain

Ghanbari, Sina; Cheghamirza, Kianoosh; Zarei, Leila; Naseri, Roghayeh; Mazzucotelli, Elisabetta

doi:10.30473/cb.2024.70419.1951

Localization of QTLs controlling starch and neutral detergent fiber of durum wheat grain

Document Type : Research Paper

Authors

¹ Department of Plant Production Engineering and Genetics, Faculty of Sciences and Agricultural Engineering, Razi University of Kermanshah, Iran.

² Cereal Research Center, Razi University of Kermanshah, Iran.

³ 3Council for Agricultural Research and Economics (CREA), Research Centre for Genomics and Bioinformatics, Fiorenzuola d’Arda, Italy.

10.30473/cb.2024.70419.1951

Abstract

Among cereals, durum wheat (Triticum turgidum L. var. durum) is one of the most important protein and energy sources after bread wheat. It has a significant role in human nutrition in most countries. In this study, to identify and localization of QTLs controlling traits related to starch and Neutral detergent fiber, 118 durum wheat recombinant inbred lines obtained from the cross between the local genotype of Iran-249 originated from the west of Iran and the local cultivar of Zardak from Kermanshah were evaluated in two environments (2014 and 2015) under rainfall conditions using randomized complete block design along with parents in three replications. QTL analysis for each trait was performed using the inclusive composite interval mapping method to identify genomic regions that significantly affected the studied traits. A total of six QTLs were identified for the two traits measured, grain starch content and neutral detergent fiber. Three QTLs were identified on chromosome 7A and one QTL on chromosome 4B for the grain starch content trait. For the neutral detergent fiber trait, one QTL was localization on chromosome 6B and one QTL on chromosome 7A. Identifying and localization QTLs controlling traits related to seed quality characteristics can provide an opportunity to improve these traits through marker-assisted selection. Also, these results can create a basis for identifying candidate genes and map-based cloning and confirming QTL function.

Keywords

Main Subjects

Molecular Plant Breeding

References

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