Characterization of Genetic Diversity to Ecological Stripe Rust Resistance in Bread Wheat (Triticum aestivum L.)
Wheat is the most commonly cultivated crop in the world and is a staple diet for many people. The current study was carried out in the field to evaluate the 51genotypes based on morphological and physiological traits under artificial inoculation by stripe rust spore suspension and to determine the g...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2025-01-01
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| Series: | BIO Web of Conferences |
| Subjects: | |
| Online Access: | https://www.bio-conferences.org/articles/bioconf/pdf/2025/02/bioconf_mblc2024_01012.pdf |
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| Summary: | Wheat is the most commonly cultivated crop in the world and is a staple diet for many people. The current study was carried out in the field to evaluate the 51genotypes based on morphological and physiological traits under artificial inoculation by stripe rust spore suspension and to determine the genetic diversity among these genotypes. Correlation analysis and principal component analysis showed Plant Height correlates highly and positively with chlorophyll content index, grain per spike, grain filling period, peduncle length, spike length and negatively correlated with spikelet per spike. Spike length (SL) was significantly correlated to plant height (PH), grain filling period, peduncle length and negatively associated with grain weight per spike and thousand grain weight. Chlorophyll content index had significant and positive association with grain filling period, plant height, peduncle length, spikelet per spike and spike length. Flag leaf area is significantly and positively associated with grain filling period. Yellow rust severity data collected from genotypes indicated that highly susceptible genotype was G27 (40S). Out of 51 genotypes, 19 genotypes were completely resistant (37.25%), three genotypes were moderately resistant with 10MR score (5.88%), one genotype was moderately resistant with 20MR score (1.96%), sixteen genotypes were moderately resistant with 5MR (31.37%), two genotypes were moderately susceptible in each MS10 (3.92%), MS20 (3.92%), MS40 (3.92%) score, one genotype was susceptible with 40S score (1.96%). Results of scatter biplot diagram showed that lines representing plant height and thousand grain weight were long depicting more variation among these traits as these were further away from origin. Traits under study like plant height, chlorophyll content index, grain per spike, thousand grain weight, grain filling period, peduncle length, and spike length had positive relation as depicted by correlation analysis. Lines 16, 22, 37, 27 and 51 were far away from other lines thus showed that these were highly diverse in respect to studied parameters. |
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| ISSN: | 2117-4458 |