Estimation of genetic components, correlation and path coefficient in some bread wheat genotypes (Triticum aestivum L.). | ||||
| Minia Journal of Agricultural Research and Development | ||||
| Volume 45, Issue 1, March 2025, Page 1-16 PDF (495.37 K) | ||||
| Document Type: Original Articles | ||||
| DOI: 10.21608/mjard.2025.406994 | ||||
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| Abstract | ||||
| Six cultivars of bread wheat were used in a half diallel during the three successive seasons of 2020/2021, 2021/2022 and 2022/2023 to study some genetic components, correlations and path coefficients. Results indicated that Misr 3 (P6) cultivar had the earliest plants in heading (DH), the shortest plants (PH) and the highest grain yield/plant (GY/P). The greatest grain yield/plant were recorded by crosses (P4xP6), (P3xP4), (P4xP5), (P1xP4) and (P5xP6) in F1 and crosses (P1xP2), (P1xP6), (P4xP6), (P2xP4) and (P1xP3) in F2. Grain yield per plant exhibited positive significant genotypic and phenotypic correlations with number of spikes/plant (NS/P), biological yield/plant (BY/P), harvest index (HI), number of spikelets/spike (NST/S) and weight of grains/spike (WG/S). Path analysis revealed high and positive direct effects on grain yield/plant via BY/P, HI, WG/S, NS/P, PH, 1000 grain weight (1000-GW) and DH. High positive indirect effects were observed for traits; spike length (SL), NS/P, BY/P, NST/S, weight/spike (WS), number of grains/spike (NG/S) and 1000-GW on grain yield/plant via weight of grains/spike. It is proved the importance of these traits as selection criteria in improving grain yield in wheat | ||||
| Keywords | ||||
| wheat; diallel; hayman; association; path analysis | ||||
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