YIELD PERFORMANCE AND ADAPTATION OF EARLY AND INTERMEDIATE DROUGHT-TOLERANT MAIZE GENOTYPES IN GUINEA SAVANNA OF NIGERIA

Bello, O.M. and Olawuyi, O.J and Abdulmaliq, S.Y and Ige, S. and Mahamood, J. and Azeez, M.A. and Afolabi, M. S. (2014) YIELD PERFORMANCE AND ADAPTATION OF EARLY AND INTERMEDIATE DROUGHT-TOLERANT MAIZE GENOTYPES IN GUINEA SAVANNA OF NIGERIA. Sarhad Journal of Agriculture, 30 (1). pp. 53-66.

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Abstract

Drought-tolerant maize genotypes belonging to two different maturity (10 early and 10 intermediate) groups were evaluated for yield and other related characters in the Southern Guinea Savanna of Nigeria for two years (2009 and 2010). The differences among genotypes between and within maturity groups differed significantly (P<0.01) for grain yield, plant height, days to anthesis and silk. The effects of year x maturity group and year x maturity within group interactions were highly significant (P<0.01) only for grain yield. The rainfall patterns were favourable in both cropping years with comparable values of growth parameters. Intermediate maturing genotypes (TZL COMP1- W C6 F2, SUWAN-1-SR-SYN, TZB-SR, OBA SUPER I, EV 8435-SR) out-yielded early maturing ones with yield advantage of 34.29% and taller by 17.04% compared to early ones. However, early genotypes were early to anthesis with 6.57% advantage over intermediate genotypes. Four early genotypes (DMR-ESR Y CIF2, AC 90 POOL 16 DT, STR, TZE-W DT STR C4 and ACR 95TZE COMP4 C3) were superior for grain yield withn a range of 4.39 to 4.68 t ha-1 . These genotypes could be selected either as parental breeding cultivars to overcome the problem of moisture stress during the later part of the cropping season or introgressed with favourable cultivars for high yield adaptable to drought-prone areas in the SGS agro-ecology. Key words: Maize yield, early genotypes, intermediate genotypes

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