Grain Yield Stability To Enhancement Of Food Security Among New Grain Maize Genotypes Zea Mays L. In Sudan

Maize consider as the most important cereal crop worldwide and also per quest for staple food to fill the gap of male nutrition for human. Therefore to enhancement of maize productivity under Sudan condition through development of high-yielding open pollinated varieties is the main objective of the Maize Research Program. In Sudan low yield of old released varieties causing considerable decrease in yield it restricted to be renewed with the other yielding ones hence its necessary to seeking for anew open pollinated varieties having a high yielding coupled with will adaptability. A multi-environment trial was conducted in representative maize growing areas to evaluate the agronomic performance and stability of elite maize genotypes developed by the program. All the experiments were conducted over ten environments in five locations via Gezira seasons 2012 2013 2014 and 2015 New Halfa seasons 2012 2013 and 2014 Sinnar season 2014 Rahad season 2015 and Hudiba season 2015 research stations farms. A total of fifteen maize genotypes with one local check Hudiba-2 were evaluated over ten environments during consecutive cropping seasons respectively. The plot size were maintained in 2 rows x 5m x 80 cm with inter row spacing of 20 cm arranged in RCBD design with 3 replicates. The studied agronomic parameters such as days to 50 tasseling silking plant height ear height and grain yield. The analysis of variance ANOVA and AMMI Additive Main Effect and Multiplicative Interaction analyses showed that the grain yield was significantly affected by genotypes environments and the genotype x environment interaction the stable genotypes for grain yield according to AMMI selection and AMMI Stability Value MSV the stable genotypes having a lower AMMI stability value coupled with high mean grain yield and also comparable yields with the check such as HSD-4592 having a mean grain yield of 2318 kgha and low AMMI Stability Value MSV of 17.7 and another stable genotype was HSD-5514 obtained mean grain yield of 2185 kgha and low AMMI Stability Value MSV of 2.9. From the obtained results on multi environments revealed that those genotypes have a high yielding and looking forward to be recommended for released as the promising varieties.