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This paper presents the study of the maize hybrids created at A.R.D.S. Turda that belongs to three vegetation period: very early, early and semi-early. The hybrids were studied in three experiences: PG 1, PG 2, PG 3 in 2011 and 2012. The climatic conditions of the 2011 and 2012 years were totally different for the maize crop: the year 2011 can be considered in terms of the rainfall as very favourable for the maize crop, while the year 2012 was a particularly dry year. There were studied hybrids from each group by comparison to the older released hybrid in order to observe the progress made in the breeding process forÂ  maize hybrids production, for stalking resistance and also precocity. For the characterization of the hybrids there were also followed other characters such as a thousand grain weight, silking data, physiological maturity date, the type of maturation, Ostrinia nubilalis attack resistance, hectolitre weight. Higher yield ability and better resistance to lodging was observed for the following hybrids included in the study: Turda SU 182 (very early hybrid), Turda Mold 188 (early hybrid), Turda Favorit and Turda Star (semi early hybrids). On the latest hybrids created at A.R.D.S. Turda it was noticed an improved resistance to lodging and stalking, but with a slight extension of the period of vegetation.

The Genetic Progress Realized in the Creation of Maize Hybrids at the A.R.D.S. Turda