Grain Yield Stability of Maize (Zea mays L.) Hybrids using Ammi Model and GGE Biplot Analysis

Six maize hybrids; Khumal Hybrid-2, KML-5(A) × KYM-33, KML-8(A) KWM-91 KWM-93, KWM-92 Super-951 were evaluated in a randomized complete block design (RCBD) with three replications at Bhotechaur (Sindhupalchowk), Mandan Deupur (Kavrepalachowk), and Khumaltar (Lalitpur), Nepal to identify stable superior hybrids. Hybrids found significant (p<0.01) for grain yield. The effects of environment genotype (G E) interactions on yield be (p<0.01). combined analysis showed that KWM-93 produced the highest (8.89 t ha-1) across all locations, followed by (8.60 ha-1), which was par each other. (bi=0.84, CV=18.54%, SD=1.59) (bi=1.16, CV=22.37 %, SD=1.99) more stable, regression coefficient (bi) nearly equal unity (1) yields above grand mean GGE biplot revealed most responsive hybrid Mandandeupur environments; whereas, environment. Hybrid stably yielding among This study suggests can promoted cultivation mid hills Nepal. SAARC J. Agric., 19(2): 107-121 (2021)