Euphytica

, Volume 153, Issue 1, pp 153–163

AFLP marker associations with agronomic and fiber traits in cotton

Authors

  • Jixiang Wu
    • Department of Plant and Soil SciencesMississippi State University
    • Crop Science Research LaboratoryUSDA-ARS
  • Jack C. McCarty
    • Crop Science Research LaboratoryUSDA-ARS
  • Ming Zhong
    • Department of Plant and Soil SciencesMississippi State University
  • Michael Swindle
    • Bayer Cotton Seed International
Article

DOI: 10.1007/s10681-006-9250-0

Cite this article as:
Wu, J., Jenkins, J.N., McCarty, J.C. et al. Euphytica (2007) 153: 153. doi:10.1007/s10681-006-9250-0

Abstract

DNA markers linked with major QTL contributing to traits of importance will be a useful tool for cotton (Gossypium spp.) genetics and breeding. We crossed four photoperiod-sensitive accessions of cotton, G. hirsutum L., with a cultivar, selected day-neutral plants and backcrossed four times to each of the four photoperiod-sensitive accessions, selecting day-neutral plants at each generation. The day-neutral plants from the first cross and the four backcross generations were advanced to the F6. These 20 day-neutral lines and four cultivars were grown in two environments at Mississippi State, MS and scored for seven agronomic and fiber quality traits. They were also scored for AFLP markers using a bulk sample of leaves from each of 24 lines. More than 50 AFLP markers were associated with the seven traits with fewer markers associated with fiber than agronomic traits. However, one to four markers were associated with 22–93% of the phenotypic variability of each of the seven traits. The results suggest that selected markers could be used in marker assisted selection (MAS) in crosses designed to use alleles from exotic accessions or cultivars to develop elite breeding lines for cotton improvement.

Keywords

AFLPQTLCottonMarker-assisted selectionYield traitsFiber traits

Copyright information

© Springer Science+Business Media B.V. 2006