Scientific Research and Essays

  • Abbreviation: Sci. Res. Essays
  • Language: English
  • ISSN: 1992-2248
  • DOI: 10.5897/SRE
  • Start Year: 2006
  • Published Articles: 2759

Full Length Research Paper

Application of exogenous glycine betaine on some growth traits of soybean (Glycine max L.) cv. DPX in drought stress conditions

Mohammad Ali Rezaei1, Behzad Kaviani2* and Hadi Jahanshahi3
1Department of Biology, Gorgan Branch, Islamic Azad University, Gorgan, Iran. 2Department of Horticultural Science, Rasht Branch, Islamic Azad University, Rasht, Iran. 3Department of Agriculture, Bojnourd Branch, Islamic Azad University, Bojnourd, Iran.
Email: [email protected]

  •  Accepted: 23 December 2011
  •  Published: 23 January 2012


Glycine betaine is an osmoprotectant quaternary ammonium compound that accumulates in response to stress in plants. In order to evaluation stress tolerance, determination of yield amount and vegetative characteristic of Glycine max L. cv. DPX, an experiment was performed under potting conditions in factorial randomized complete block design with 4 replications in natural environmental conditions. Treatments include different levels of drought stress (30, 50, 70 and 100% of field capacity) and exogenous glycine betaine in four levels (0, 2.5, 5 and 7.5 kg ha-1). Morphological index including plant height, number of branch, number of seed per plant, seed weight 1000, and yield were measured after harvesting. The results indicated that plant height decreased significantly as stress rate increased, but different concentrations of glycine betaine had no significant effect on the plant height. The number of branch, number of seed per plant and seed weight 1000 increased significantly with application of exogenous glycine betaine in different levels of drought stress in comparison with control. This research indicated the role of exogenous glycine betaine in reduction of harmful effects of drought stress and its useful effects on yield and yield components.


Key words: Drought stress, exogenous glycine betaine, soybean, yield.