Two field experiments were conducted at the experimental farm of Nasser's Faculty of Agricultural Sciences in Lahej governorate during tow consecutive seasons (00/01 & ½) using the randomized complete blocks design (RCBD) in three replicates. It aimed at studying the productivity potentail for 11 hybrids which were introduced to the country through the General Seed Multiplication Cooperation (Dhamar): Dracma, Farrisno, Dahab, H.3080, H.3062, H.3052, Decalb 2370, Watania-4, H.3065, Decalb-2147 and H.310 to compare them with three local maize open-pollinated varieties (Knejha-36, Tahama-1and City Lougus-7931). The obtained results indicate that most of the introduced hybrids belong to mid-early maturity varieties group, with number of leaves (14-15) to mature after 110 -120 day. There was an evident harmony between plant height of the hybrids (203 -234 cm) and the Position of the first ear which ranged between 65-97 cm (below intermediate position). The results also indicate that most of introduced hybrids belong to high-productivity varieties group, because the average 1000 kernel weight was more than 300 gm. This average ranged between 317 - 353 gm. The introduced hybrids significantly surpassed the local varieties at level 0.1% in their average productivity of kernels during both seasons (2000 & 2002) which ranged between 7.406-7.819 ton/ha, with an increase that ranged between 32.3-39.7% activities compared to Tahama-1 variety which gave 5.598 ton/ha.
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