| Abstrakt: |
Landraces are reservoirs of many economically important traits and the study of biofortification traits in relation to grain yield will be useful in the better utilization of unexplored germplasm in wheat improvement. A set of 56 tetraploid genotypes were tested in three different environments during 2020–2021 for grain iron concentration (GFeC), grain zinc concentration (GZnC), and grain yield (GY). Considerable genetic variation was observed for all traits. The effect of environment per se was highest on the expression of GZnC followed by GFeC and GY. Genotype-environment interaction (GEI) for GFeC, GY, and GZnC accounted for 38.8%, 33.8%, and 28.6% of the total sum of squares, respectively. The positive and high correlation between grain micronutrients suggests a good prospect of simultaneous improvement of both nutrients. Trait-wise, G17, G56, G10, and G44 were found to be stable for GY, while G43, G45, G44, G2, G7, and G34 were stable for GFeC. Similarly, G30, G5, G38, and G44 were stable for GZnC. Across traits, G44 (DDK 50422) was stable along with a high trait mean for all three traits. This could be one of the potential genetic resources for dissecting the molecular basis and also serve as an excellent donor for both biofortification traits along with grain yield in tetraploid dicoccum wheat. [ABSTRACT FROM AUTHOR] |
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