Display Settings:

Format

Send to:

Choose Destination
PLoS One. 2012;7(8):e43079. doi: 10.1371/journal.pone.0043079. Epub 2012 Aug 20.

A single locus is responsible for salinity tolerance in a Chinese landrace barley (Hordeum vulgare L.).

Author information

  • 1Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology and Barley Research Institution of Yangzhou University, Yangzhou, China.

Abstract

INTRODUCTION:

Salinity and waterlogging are two major abiotic stresses severely limiting barley production. The lack of a reliable screening method makes it very hard to improve the tolerance through breeding programs.

METHODS:

This work used 188 DH lines from a cross between a Chinese landrace variety, TX9425 (waterlogging and salinity tolerant), and a Japanese malting barley, Naso Nijo (waterlogging and salinity sensitive), to identify QTLs associated with the tolerance.

RESULTS:

Four QTLs were found for waterlogging tolerance. The salinity tolerance was evaluated with both a hydroponic system and in potting mixture. In the trial with potting mixture, only one major QTL was identified to associate with salinity tolerance. This QTL explained nearly 50% of the phenotypic variation, which makes it possible for further fine mapping and cloning of the gene. This QTL was also identified in the hydroponic experiment for different salt-related traits. The position of this QTL was located at a similar position to one of the major QTLs for waterlogging tolerance, indicating the possibility of similar mechanisms controlling both waterlogging and salinity tolerance.

CONCLUSION:

The markers associated with the QTL provided a unique opportunity in breeding programs for selection of salinity and waterlogging tolerance.

PMID:
22916210
[PubMed - indexed for MEDLINE]
PMCID:
PMC3423432
Free PMC Article

Images from this publication.See all images (5)Free text

Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for Public Library of Science Icon for PubMed Central
    Loading ...
    Write to the Help Desk