Effect of water deficit stress on seedling biomass and physio-chemical characteristics in different species of wheat possessing the D genome.

Alireza Pour-Aboughadareh, Mansour Omidi, Mohammad Reza Naghavi , Alireza Etminan, Ali Ashraf Mehrabi, Péter Poczai, Hamid Bayat

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Wild relatives of wheat serve as an extraordinary source of variability for breeding programs due to their capabilities to respond to various environmental stresses. Here, we investigated some species possessing a D genome (T. aestivum, Ae. tauschii, Ae. crassa and Ae. cylindrica) in terms of relative water content (RWC), stomatal conductance (Gs), relative chlorophyll content, initial fluorescence (Fo), maximum quantum yield of PSII (Fv/Fm), maximum primary yield of PSII photochemistry (Fv/Fo), as well as shoot fresh and dry biomasses under control and water deficit conditions. Our results revealed that water deficit negatively affected all traits; shoot fresh weight, Gs and RWC showed the highest reduction compared to the control condition. Principal component analysis (PCA) identified two PCs that accounted for 53.36% of the total variation in the water deficit conditions. Correlation analysis and PCA-based biplots showed that stress tolerance index (STI) is significantly associated with Fv/Fm and Fv/Fo under water stress conditions, suggesting that these are the best parameters to evaluate when screening for tolerant samples at the seedling stage. We identified 19 accessions from Ae. crassa and one from Ae. tauschii as the most tolerant samples. In conclusion, Ae. crassa might provide an ideal genetic resource for drought-tolerant wheat breeds.
Original languageEnglish
Article number522
JournalAgronomy
Volume9
Issue number9
Number of pages20
ISSN2073-4395
DOIs
Publication statusPublished - Sep 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 4111 Agronomy
  • 414 Agricultural biotechnology
  • Aegilops species
  • drought stress
  • stomatal conductance
  • photosynthetic capacity
  • relative water content
  • CHLOROPHYLL-A FLUORESCENCE
  • DROUGHT TOLERANCE
  • SELECTION CRITERION
  • AEGILOPS-TAUSCHII
  • POTENTIAL SOURCES
  • HEAT-STABILITY
  • GRAIN-YIELD
  • SALT STRESS
  • PHOTOSYNTHESIS
  • MAIZE

Projects

PLAGE: Genetic diversity, conservation and utilization of plant genetic resources

Poczai, P., Amiryousefi, A., Cseh, A., Karsai, I., Balla, K., Kiss, T., Bányai, J. & Illés, K.

01/09/201731/12/2022

Project: Research project

Cite this