African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12481

Full Length Research Paper

Evaluation of sorghum genotypes under drought stress conditions using some stress tolerance indices

Mohammad Ali Shirazi Kharrazi1 and Mohammad Reza Naroui Rad2*
1Scientific Member Board of University of Payam-e-Noor, Khash Branch, Khash, Iran. 2Scientific Member Board of Agriculture and Natural Resources Research Center of Sistan, Iran.
Email: [email protected]

  •  Accepted: 11 August 2011
  •  Published: 10 October 2011

Abstract

Seven genotypes of sorghum (Sorghum bicolour (L.) Moench) were studied in both drought and normal conditions. In each condition, the genotypes were evaluated using a split plot based randomized complete block design with three replications. Drought tolerance indices including stability tolerance index (STI), mean productivity (MP), geometric mean productivity (GMP), stress susceptibility index (SSI), tolerance index (TOL) were calculated for each genotype. The maximum value of STI (0.687), MP (658.95) and GMP (624.94) were recorded for genotype KGS 3. Correlation coefficients revealed that MP index had the highest value in two conditions with grain yield. Thus, tolerance index including MP is suitable for screening of tolerant genotypes in drought stress condition. Cluster analysis by method Ward classified seven genotypes in two groups in drought stress condition.

 

Key words: Sorghum, drought indices, grain yield, cluster analysis.

Copyright © 2024 Author(s) retain the copyright of this article.

This article is published under the terms of the Creative Commons Attribution License 4.0

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