ABS84278

Winter barley response to varying levels of flooding stress


  • Poster Presentation
  • Poster 1 (Flash Talk: 11 Jun 2018 14:40)
  • Foyer, UCD Agriculture and food science Centre
  • View all IPSAM abstracts

Tomás Byrne*
Teagasc
UCD

Susanne Barth
Teagasc

Carl Ng
UCD

Lena Förster
Teagasc

Petra Kock-Applegren
Teagasc

Thibauld Michel
Teagasc

John Spink
Teagasc

Jim Grant
Teagasc

*Presenting Author


Winter barley (Hordeum vulgare) is an important crop for Irish agriculture, and increased incidences of abiotic stress due to global climate change is expected to negatively impact on crop yield. Yield from winter barley is under pressure from flooding due to increased rainfall in Irish farmland, and the situation is projected to worsen. Submergence due to flooding decreases gas flow in and out of the plant, causing hypoxic conditions and in extreme cases, anoxic conditions. Flooding is a complex stress, and the duration of flooding, the height of floodwater, temperature, and soil conditions can exert differing effects on the plant. We have conducted a multi-layered screening approach using 420 varieties from previous recommended lists from 1922 to 2013 both under field conditions and in controlled climate conditions towards submergence and waterlogging stress in order to identify sensitive and tolerant accessions. Traits like shoot elongation, stomatal density, photosynthetic capacity, root elongation, aerenchyma formation and root porosity in submerged and waterlogged conditions will be investigated in selected sensitive and tolerant accessions.