Evaluation of maize hybrids for yield and stability in Botswana
1997
Setimela, P.S.
Fifteen maize (Zea mays L.) hybrids and one open pollinated variety, Kgalagadi Early Pearl (KEP), were evaluated for two seasons at three locations in 1993/94 and 1994/95. The study was undertaken to provide information on yield stability and performance of hybrids in Botswana environments. Genotype x environment (GCS) interactions were analyzed using the additive main effects and multiplicative interaction (AMMI) with principal components analysis (IPCA 1). They were significant (p0.01) for days to 50 Per cent silking, days to 50 Per cent anthesis, anthesis silking interval (ASI) and plant height, but not for grain yield. Hybrids PHB 3427, PHB 3435, CRN 3839, CRN 4141 and CRN 4523 were significantly, higher in yield (p0.01) than KEP. Number of days to 50 Per cent silking (r
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