QTL mapping of 1000-kernel weight, kernel length, and kernel width in bread wheat (Triticum aestivum L.)

TitleQTL mapping of 1000-kernel weight, kernel length, and kernel width in bread wheat (Triticum aestivum L.)
Publication TypeJournal Article
Year of Publication2010
AuthorsRamya, P, Chaubal, A, Kulkarni, K, Gupta, L, Kadoo, NY, Dhaliwal, HSingh, Chhuneja, P, Lagu, MD, Gupta, V
JournalJournal of Applied Genetics
Volume51
Issue4
Pagination421-429
Date PublishedDEC
ISSN1234-1983
Keywordscomposite interval mapping, kernel shape, kernel size, quantitative trait loci, Stable QTLs, Triticum aestivum
Abstract

Kernel size and morphology influence the market value and milling yield of bread wheat (Triticum aestivum L.). The objective of this study was to identify quantitative trait loci (QTLs) controlling kernel traits in hexaploid wheat. We recorded 1000-kernel weight, kernel length, and kernel width for 185 recombinant inbred lines from the cross Rye Selection 111 x Chinese Spring grown in 2 agro-climatic regions in India for many years. Composite interval mapping (CIM) was employed for QTL detection using a linkage map with 169 simple sequence repeat (SSR) markers. For 1000-kernel weight, 10 QTLs were identified on wheat chromosomes 1A, 1D, 2B, 2D, 4B, 5B, and 6B, whereas 6 QTLs for kernel length were detected on 1A, 2B, 2D, 5A, 5B and 5D. Chromosomes 1D, 2B, 2D, 4B, 53 and 5D had 9 QTLs for kernel width. Chromosomal regions with QTLs detected consistently for multiple year-location combinations were identified for each trait. Pleiotropic QTLs were found on chromosomes 2B, 2D, 4B, and 5B. The identified genomic regions controlling wheat kernel size and shape can be targeted during further studies for their genetic dissection.

DOI10.1007/BF03208872
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)1.482
Divison category: 
Biochemical Sciences