Drought stress tolerance of two wheat genotypes

András Lukács, Géza Pártay, T. Németh, Szilveszter Csorba, Csilla Farkas

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Biotic and abiotic stress effects can limit the productivity of plants to great extent. In Hungary, drought is one of the most important constrains of biomass production, even at the present climatic conditions. The climate change scenarios, developed for the Carpathian basin for the nearest future predict further decrease in surface water resources. Consequently, it is essential to develop drought stress tolerant wheat genotypes to ensure sustainable and productive wheat production under changed climate conditions. The aim of the present study was to compare the stress tolerance of two winter wheat genotypes at two different scales. Soil water regime and development of plants, grown in a pot experiment and in large undisturbed soil columns were evaluated. The pot experiments were carried out in a climatic room in three replicates. GK Élet wheat genotype was planted in six, and Mv Emese in other six pots. Two pots were left without plant for evaporation studies. Based on the mass of the soil columns without plant the evaporation from the bare soil surface was calculated in order to distinguish the evaporation and the transpiration with appropriate precision. A complex stress diagnosis system was developed to monitor the water balance elements. ECH2O type capacitive soil moisture probes were installed in each of the pots to perform soil water content measurements four times a day. The irrigation demand was determined according to the hydrolimits, derived from soil hydrophysical properties. In case of both genotypes three plants were provided with the optimum water supply, while the other three ones were drought-stressed. In the undisturbed soil columns, the same wheat genotypes were sawn in one replicate. Similar watering strategy was applied. TDR soil moisture probes were installed in the soil at various depths to monitor changes in soil water content. In order to study the drought stress reaction of the wheat plants, microsensors of 1.6 mm diameter were implanted into the stems and connected to a quadrupole mass spectrometer for gas analysis. The stress status was indicated in the plants grown on partly non-irrigated soil columns by the lower CO2 level at both genotypes. It was concluded that the developed stress diagnosis system could be used for soil water balance elements calculations. This enables more precise estimation of plant water consumption in order to evaluate the drought sensitivity of different wheat genotypes.

Original languageEnglish
Pages (from-to)S95-S104
JournalSoil and Water Research
Volume3
Publication statusPublished - 2008

Fingerprint

drought stress
drought tolerance
genotype
tolerance
wheat
soil column
soil water
evaporation
soil
drought
probes (equipment)
soil water content
water stress
water budget
irrigation
soil moisture
water content
probe
soil water balance
soil water regimes

Keywords

  • Drought stress
  • Gas metabolism
  • Soil water content
  • Stress diagnosis system
  • Wheat genotypes

ASJC Scopus subject areas

  • Soil Science
  • Aquatic Science

Cite this

Lukács, A., Pártay, G., Németh, T., Csorba, S., & Farkas, C. (2008). Drought stress tolerance of two wheat genotypes. Soil and Water Research, 3, S95-S104.

Drought stress tolerance of two wheat genotypes. / Lukács, András; Pártay, Géza; Németh, T.; Csorba, Szilveszter; Farkas, Csilla.

In: Soil and Water Research, Vol. 3, 2008, p. S95-S104.

Research output: Contribution to journalArticle

Lukács, A, Pártay, G, Németh, T, Csorba, S & Farkas, C 2008, 'Drought stress tolerance of two wheat genotypes', Soil and Water Research, vol. 3, pp. S95-S104.
Lukács A, Pártay G, Németh T, Csorba S, Farkas C. Drought stress tolerance of two wheat genotypes. Soil and Water Research. 2008;3:S95-S104.
Lukács, András ; Pártay, Géza ; Németh, T. ; Csorba, Szilveszter ; Farkas, Csilla. / Drought stress tolerance of two wheat genotypes. In: Soil and Water Research. 2008 ; Vol. 3. pp. S95-S104.
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