Novel chromosome segment substitution lines derived from japonica cultivar 'Yukihikari' in the genetic background of 'Joiku462' cultivar and identification of quantitative trait loci for heading date and grain quality

Novel chromosome segment substitution lines derived from japonica cultivar 'Yukihikari' in the genetic background of 'Joiku462' cultivar and identification of quantitative trait loci for heading date and grain quality

Copyright © 2025 by JAPANESE SOCIETY OF BREEDING.

Détails bibliographiques
Publié dans:Breeding science. - 1998. - 75(2025), 3 vom: 12. Juni, Seite 210-223
Auteur principal: Kato, Kiyoaki (Auteur)
Autres auteurs: Munekata, Shinya, Watanabe, Toshiro, Sato, Takashi, Hosokawa, Yusuke
Format: Article en ligne
Langue:English
Publié: 2025
Accès à la collection:Breeding science
Sujets:Journal Article QTL cluster apparent amylose content chromosome segment substitution lines elemental content grain size protein content rice
Description
Résumé:Copyright © 2025 by JAPANESE SOCIETY OF BREEDING.
In this study, we mapped quantitative trait loci (QTLs) associated with heading date and grain quality traits in a novel set of 44 chromosome segment substitution lines (CSSLs) derived from closely related rice (Oryza sativa L. ssp. japonica) cultivars 'Yukihikari' (good grain quality) and 'Joiku462' (superior eating and high grain appearance qualities). Days to heading (DTH), apparent amylose content (AAC), protein content (PC), thousand brown-grain weight (TBGW), brown grain length (BGL), brown grain width (BGWI), brown grain thickness (BGT), and the contents of 12 mineral elements (S, P, Mg, Ca, K, Mo, Cu, Zn, Mn, Fe, Sr, and Si) in polished rice were evaluated in 44 CSSLs grown in two different environments. We identified 78 QTLs, including 8, 7, 8, 8, 19, 10, and 10 for DTH, AAC, PC, TBGW, BGL, BGWI, and BGT, respectively, and 2, 1, 3, and 2 for S, Mo, Cu, and Zn contents, respectively. Several QTLs were observed in the same region, forming 17 clusters on chromosomes 1-10. These QTLs can facilitate gene isolation and breeding to develop rice cultivars with optimum heading time and improved grain quality
Description:Date Completed 26.09.2025
Date Revised 28.09.2025
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1344-7610
DOI:10.1270/jsbbs.24058