ASSESSMENT OF YIELD PERFORMANCE AND STABILITY OF MAIZE HYBRIDS ACROSS ENVIRONMENTS USING AMMI AND GGE BIPLOT ANALYSIS | ||
| Egyptian Journal of Plant Breeding | ||
| Volume 29, Issue 2, October 2025, Pages 109-129 PDF (2.08 M) | ||
| Document Type: Original research | ||
| DOI: 10.12816/ejpb.2025.461894 | ||
| Abstract | ||
| Maize hybrids perform differently in different locations. So, selection of suitable hybrids in diverse locations is essential. The objectives of this study were to estimate the productivity of new maize hybrids under different locations to identify the will-adapted and stable maize hybrids and suitable locations for testing maize hybrids. This study included ten promising white maize hybrids and two commercial hybrids evaluated under five locations in Egypt using a randomized complete block design with three replications. The mean squares due to locations, hybrids and their interaction were highly significant for grain yield. The highest hybrid for superiority percentage relative to cheeks for grain yield was SC-Sk176 followed by SC-Sk183 and SC-Sk179. The first two principal components IPCA1 and IPCA2 explained 81.04% of interaction between locations and hybrids. Based on AMMI analysis, the hybrids; SC-Sk178, SC-Sk179, SC-Sk180, SC-Sk183 and SC-Sk185 gave high grain yield and low scores of IPCA1, indicating that these hybrids are high yielding and stable across different environments. Meanwhile, the SC-Sk176 had the highest grain yield and high scores of IPCA1, indicating that this hybrid is suitable for specific environments. Also, the highest location for IPCA1 showing greater discriminating ability and ease of selection of hybrids was Sids location followed by Nubaria, Sakha and Mallawi. Meanwhile, the poor discriminating ability was shown by location Gemmeiza. The GGE biplot analysis showed that the hybrid SC-Sk176 was optimal in Sakha, Gemmeiza and Nubaria and the hybrid SC-Sk183 was optimal in Sids and Mallawi. The ranking of GGE biplot analysis showed that the hybrid SC-Sk179 followed by SC-Sk183 and SC-Sk185 were the most ideal hybrids because they had high grain yield and stability. Also, Sakha location was more discriminating among hybrids and more representatives of all environments, hence it was considered the ideal testing site for selection. Therefore, the AMMI model and GGE biplot can be used to complement each other for a comprehensive evaluation of maize hybrids yield. Also, selected maize hybrids with high yield and stability can be promoted in maize hybrids breeding program. | ||
| Keywords | ||
| Zea mays; Stability; Grain yield; G×E interaction; Discriminativeness and Representativeness | ||
|
Statistics Article View: 22 PDF Download: 26 |
||
