Comportamento de genótipos de milho com características promissoras para a produção de minimilho

Six corn genotypes with promising characteristics for the production of mini-corn and adapted to the Zona da Mata region, Pernambuco, Brazil, were evaluated. The experiment was performed at the Phytotechnical Experimental Campus of the UFRPE, between 2014 and 2015. Six genotypes were evaluated for ten agronomic variables. Variance analysis revealed that the significant variables for mini-corn production were: number of spikes, differentiation panicle start, height of plant after 30 days of emergence, weight of spike and weight of aerial segment. Genotype co-relationships were higher than the phenotype ones, albeit of the same sign. This fact showed a smaller influence of the environment on the characteristics. Trail analysis revealed more than 96% (R2) of the variables´ influence on the number of spikes and low residual effect 0.17, confirming that variables affected the production of the number of spikes of mini-corn. The most important characteristics in the direct determination of mini-corn production were plant height at 30 and 60 days after emergence, spike weight and weight of the aerial segment. The use of genotypes CMS47, CMS39 and AL-25 is recommended for further improvement research work.