Evaluation of drought tolerant genotypes in Bread Wheat (Triticum aestivum L.) genotypes Using morpho-physiological traits and selection indices

Authors

  • Maryam Golabadi
  • Pooran Golkar
  • Pegah Zadfar

Abstract

This study evaluated the drought tolerance genotypes in fifteen genotypes of wheat with several Morpho-Physiological traits including flag leaf length (FL), flag leaf width (FW), relative water content (RWC), excised leaf water retention (ELWR), rate of water loss (RWL), leaf water content (LWC), grain yield, biological yield as well as eight drought tolerance indices [yield stability index (YSI), yield index (YI), stress tolerance index (STI), geometric mean productivity (GMP), stress susceptibility index (SSI), mean productivity (MP), stress tolerance (TOL), and harmonic mean (HM)]. The STI, MP, and GMP indices were found to have significantly positive correlations with both yield (rainfed and normal condition); hence, they were identified as the best selection indices for distinguish of drought tolerance. Based on biplot analysis, Sepahan and Rowshan were superior genotypes for both rainfed and irrigated conditions, making them recommendable for cultivation in drought-prone regions.

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Published

2017-04-03

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Section

Articles