• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/jbsc/042/01/0081-0089

    • Keywords

       

      Accelerated ageing; association mapping; controlled deterioration; conventional storage; Triticum aestivum

    • Abstract

       

      The deterioration in the quality of ex situ conserved seed over time reflects a combination of both physical andchemical changes. Intraspecific variation for longevity is, at least in part, under genetic control. Here, the grain of 183bread wheat accessions maintained under low-temperature storage at the IPK-Gatersleben genebank over somedecades have been tested for their viability, along with that of fresh grain subjected to two standard artificial ageingprocedures. A phenotype–genotype association analysis, conducted to reveal the genetic basis of the observedvariation between accessions, implicated many regions of the genome, underling the genetic complexity of the trait.Some, but not all, of these regions were associated with variation for both natural and experimental ageing, implyingsome non-congruency obtains between these two forms of testing for longevity. The genes underlying longevityappear to be independent of known genes determining dormancy and pre-harvest sprouting.

    • Author Affiliations

       

      MIAN ABDUR REHMAN ARIF1 2 MANUELA NAGEL1 ULRIKE LOHWASSER1 ANDREAS BÖRNER1

      1. Leibniz Institute of Plant Genetics and Crop Plant Research, Gatersleben, Germany
      2. Nuclear Institute for Agriculture and Biology, Faisalabad, Pakistan
    • Dates

       
    • Supplementary Material

       
  • Journal of Biosciences | News

© 2017-2019 Indian Academy of Sciences, Bengaluru.