Evaluating the Performance of Wheat Germplasm under Drought Using Morphological and Physiological Traits

Authors

  • Hussan Nawaz Department of Agronomy, Balochistan Agriculture College, Quetta, Balochistan, Pakistan.
  • Jahangir Khan PARC-Balochistan Agricultural Research and Development Center, Quetta, Balochistan, Pakistan.
  • Zafar Ullah Malghani Department of Agronomy, Balochistan Agriculture College, Quetta, Balochistan, Pakistan.
  • Syed Riaz Ahmed PARC-Balochistan Agricultural Research and Development Center, Quetta, Balochistan, Pakistan.
  • Abdul Razzaq Reki Department of Agronomy, Balochistan Agriculture College, Quetta, Balochistan, Pakistan.
  • Munir Ahmed Khetran PARC-Balochistan Agricultural Research and Development Center, Quetta, Balochistan, Pakistan.
  • Nadeem Sadiq PARC-Balochistan Agricultural Research and Development Center, Quetta, Balochistan, Pakistan.
  • Nanak Khan Department of Agronomy, Balochistan Agriculture College, Quetta, Balochistan, Pakistan.
  • Ghulam Rasool Department of Agronomy, Balochistan Agriculture College, Quetta, Balochistan, Pakistan.
  • Muhammad Nauman Irshad Department of Agronomy, Balochistan Agriculture College, Quetta, Balochistan, Pakistan.
  • Basit Ali Department of Water Management, Agriculture University of Peshawar, KP, Pakistan.

DOI:

https://doi.org/10.70749/ijbr.v3i6.1572

Keywords:

Drought Stress, Grain Yield, RWC, NDVI, Wheat

Abstract

This study assessed the morphological and physiological responses of multiple genotypes under drought stress to identify key traits associated with drought tolerance and yield stability. A field experiment was conducted under controlled drought conditions, and data for 16 traits, including plant height, spikelet number, tiller count, grain yield, relative water content (RWC), chlorophyll content indices (NDVI), canopy temperature (CT), and harvest index (HI) were recorded. Analysis of variance (ANOVA) revealed significant genetic variation among genotypes for most traits. Mean comparisons with two standard checks, AZRI-96 and Local White (LW), identified superior lines such as BARDC-WW-5, BARDC-WW-9, and BARDC-WW-18, which exhibited enhanced grain yield, relative water content, and physiological resilience under drought stress. Pearson correlation analysis showed strong positive associations between RWC, NDVI, grain yield, and total dry matter, while canopy temperature was negatively correlated with these traits, indicating its potential as a stress indicator. Principal Component Analysis (PCA) reduced data dimensionality, with the first two components explaining 42.7% of variation and highlighting clusters of yield-related and physiological traits. The grouping of grain yield, harvest index, RWC, and total dry matter emphasizes their critical role in drought tolerance. These findings provide valuable insights into trait interactions under drought stress and offer reliable markers for breeding drought-resilient cultivars with improved productivity in water-limited environments.

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Published

2025-06-11

Issue

Vol. 3 No. 6 (2025): IJBR

Section

Original Article

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How to Cite

Nawaz, H., Khan, J., Malghani, Z. U., Ahmed, S. R., Reki, A. R., Khetran, M. A., Sadiq, N., Khan, N., Rasool, G., Irshad, M. N., & Ali, B. (2025). Evaluating the Performance of Wheat Germplasm under Drought Using Morphological and Physiological Traits. Indus Journal of Bioscience Research, 3(6), 67-75. https://doi.org/10.70749/ijbr.v3i6.1572