Response of Some Sugar Beet ( Beta vulgaris L.) Genotypes to Drought and Salinity Stresses, and Genotype X Environment Interaction Assessment for Some Yield and Quality Traits

Faddi Abbas, GCSAR, Agricultural Research Center in Homs.
Al Ba’ath University, Faculty of Agriculture.


This study was conducted at General Commission for Scientific  Agriculture Research  (Homs and Der EzZour Stations), and Faculty of Agriculture, Al-Baath University during 2008, 2009, 2010 years to study:

  1. Effect of drought and salinity stresses in some morphophysiological  and biochemical traits in sugar beet plant.
  2. Determining the most valuable traits related to stress tolerance.
  3. Developing an early screening tool as selection criteria in Sugar beet genotypes.
  4. Study some quantitative traits which related to higher amount of true sugar.
  5. Estimate the expectant variation to each genotypes and environment, and estimate G× E Interaction using Stability parameters.

In lab experiments PEG-6000 was applied to the germination media with low osmotic potentials (OP) i.e. 0, -0.2, -0.4, -0.6, -0.8, -1 Mpa., for screening 20 sugar beet genotypes (10 monogerm and 10 multigerm) to drought stress. While in salinity test NaCl was applied to the media in different concentrations i.e. 0, 50, 100, 150, 200, 250, 300 mM.

Field drought experiments was conducted in Homs center at 2009, 2010 seasons, 10 genotypes which selected from lab test were exposed to two drought duration, the first was at the higher canopy while the second before harvesting by 40 days to each treatments.

Field salinity experiment was conducted at Der Ez Zour Agricultural Research Center, during 2008/2009- 2009/2010 seasons, at summer time, to evaluate the response of 10 sugar beet genotypes irrigated with saline water, the electrical conductivity (ECw) of the water ranged from 8.6-10 dS.m-1 in the first year to 8.4-10.4 dS.m-1 in the second year. Randomized completely block design (RCBD) with three replicates was used.