Selection of stable and high-yielding hybrids of maize based on various stability parameters
Selecting a stable and high-yielding hybrid of maize requires an efficient method of evaluation. Evaluating hybrids in multi environments is crucial in breeding process to identify the optimal genotype adapted to different kind of environments. Two promising white grain three way crosses i.e. TWC-SK-330 and TWC-SK-331 and two promising yellow grain three way crosses TWC-Nub 8 and TWC-Nub 10 plus four commercial three way cross hybrids were assessed during Summer, 2021 in five different environments in Egypt, i.e. Sakha, Gemmiza, Nubaria, Sids and Mallawy laid out in a randomized complete block design. The data showed that environments (E), hybrids (H) and their interaction (HEI) mean squares were significant or highly significant for all the studied traits except (HEI) for 50% silking. E, H, HEI explained 86.41, 5.46 and 8.13 % of the total grain yield variations, respectively. The two promising white grained three way crosses, TWC-SK-330 and TWC-SK-331 recorded 9.03 and 9.07 t ha-1 of grain yield, respectively which exceeded insignificantly the two white checks TWC-321 and TWC-324 and showed stable by 7, 8 stability statistics, respectively. Therefore, these hybrids are considered as stable genotypes and high yielding.
Keywords: Maize, GxE, Grain Yield, Stability, Genotype, Environment
Selection of stable and high-yielding hybrids of maize based on various stability parameters. 2023. Electronic Journal of Plant Breeding, 14 2, 396-401. Retrieved from https://ejplantbreeding.org/index.php/EJPB/article/view/4728
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