Abstract
This research study investigates the genetic variability for yellow rust (also known as stripe rust) resistance in 30 wheat (Triticum aestivum L.) genotypes and explores its relationship with various morphological parameters. The experiment involved assessing parameters like days to heading (DH), days to maturity (DM), final disease severity (FDS), area under the disease progress curve (AUDPC), coefficient of infection (CI), flag leaf area (FLA), plant height (PH), peduncle length (PL), spikelets per spike (SPS), number of grains per spike (NGPS), thousand grain weight (TGW), and grain yield per plant (GYP) in these genotypes. Significant genetic variability for yellow rust resistance was observed, with distinct differences among the wheat genotypes. Thirteen genotypes revealed strong resistance, with small values for FDS, AUDPC and CI. While 06 genotypes were found to be highly susceptible, exhibiting larger values for these parameters, categorizing them as “S” (Susceptible). Strong correlations were observed between some traits, such as AUDPC and CI, which were highly positively correlated. Disease-related traits also displayed distinctive associations with yield-related parameters Principal Component Analysis (PCA) highlighted four significant (PCs) due to Eigen values greater than 1. The first two (F1 and F2) explaining 59.04% of data variability. Genotype clustering indicated varying genetic similarity levels. Overall, this research enhances our knowledge of the genetic basis of yellow rust resistance in wheat and sheds light on the associations between resistance and various morphological and yield-contributing traits.
Original language | English |
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Article number | 22 |
Number of pages | 9 |
Journal | Journal of Crop Health |
Volume | 77 |
Issue number | 1 |
DOIs | |
Publication status | Published - Feb 2025 |
Bibliographical note
Publisher Copyright:© The Author(s), under exclusive licence to The author(s), exclusively licensed to Springer-Verlag GmbH Germany, a part of Springer Nature 2024.
Keywords
- Genetic diversity
- PCA
- Wheat
- Yellow rust