Journal of Applied Genetics

, Volume 51, Issue 4, pp 421–429

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

  • P. Ramya
  • A. Chaubal
  • K. Kulkarni
  • L. Gupta
  • N. Kadoo
  • H. S. Dhaliwal
  • P. Chhuneja
  • M. Lagu
  • V. Gupt
Original article

DOI: 10.1007/BF03208872

Cite this article as:
Ramya, P., Chaubal, A., Kulkarni, K. et al. J Appl Genet (2010) 51: 421. doi:10.1007/BF03208872

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 × 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, 5B 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.

Keywords

composite interval mappingkernel shapekernel sizequantitative trait locistable QTLsTriticum aestivum

Copyright information

© Institute of Plant Genetics, Polish Academy of Sciences, Poznan 2010

Authors and Affiliations

  • P. Ramya
    • 3
  • A. Chaubal
    • 3
  • K. Kulkarni
    • 3
  • L. Gupta
    • 3
  • N. Kadoo
    • 3
  • H. S. Dhaliwal
    • 1
    • 2
  • P. Chhuneja
    • 2
  • M. Lagu
    • 3
  • V. Gupt
    • 3
  1. 1.Department of Biotechnology, Indian Institute of Technology RoorkeeRoorkeeIndia
  2. 2.School of Agricultural Biotechnology, College of AgriculturePunjab Agricultural UniversityLudhianaIndia
  3. 3.Scientist ‘G’, Plant Molecular Biology Group, Division of Biochemical SciencesNational Chemical LaboratoryPuneIndia