Determination of drought stress indices, yield and water productivity in sorghum genotypes under full and deficit irrigation conditions

Determination of drought stress indices in sorghum

Authors

  • Köksal Aydinsakir Batı Akdeniz Agricultural Research Institute, 07100, Antalya, Turkey
  • Cengiz Erdurmuş Batı Akdeniz Agricultural Research Institute, 07100, Antalya, Turkey
  • Cihan Karaca Akdeniz University, Faculty of Agriculture, Department of Farm Structures and Irrigation, 07059 Antalya, Turkey
  • Dursun Büyüktaş Akdeniz University, Faculty of Agriculture, Department of Farm Structures and Irrigation, 07059 Antalya, Turkey
  • Cenk Küçükyumuk İzmir Demokrasi University, Vocational Training School, 35140, İzmir, Turkey

Abstract

The aim of this research was to study yield and drought tolerant indices of four sorghum genotypes (Uzun, Erdurmuş, Beydarı and Öğretmenoğlu) under full (FI) and deficit irrigation (DI) conditions at the Batı Akdeniz Agricultural Research Institute (BATEM), Antalya, Türkiye. Stress sensitivity index, stress tolerance index, harmonic mean, yield index, drought resistance index, yield stability index, geometric mean productivity, abiotic tolerance index, stress tolerance, mean productivity, and sensitivity drought index, were evaluated in the research. The highest evapotranspiration was calculated in FI treatment as 488.3 mm for Uzun genotype, while the lowest was calculated in DI treatment as 307.0 mm for Beydarı genotype. The highest water productivity was determined in FI as 3.97 kg m-3 for Uzun genotype. The results showed that deficit irrigation application significantly affected hay yield and yield parameters except for chlorophyll content. The highest hay yield (19.4 t ha-1) was obtained from Uzun genotype under FI treatment. Mean productivity, stress tolerance index, harmonic mean, and geometric mean productivity were more informative classification of drought tolerant or sensitive sorghum genotypes in the study. It is concluded that Uzun genotype was more suitable for cultivation under water stress conditions according to the principal components analysis and correlation coefficient.

Additional Files

Published

2025-01-27

Issue

Vol. 67 No. 2

Section

Articles

License

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