Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 23 ISSUE 4
Written by Alina Laura AGAPIE, Florin SALA

The study comparatively analyzed 15 maize genotypes, under the aspect of production potential and some quality indices. The experiment was organized within the ARSD Lovrin. Eight maize genotypes from Lovrin (L experimental code; L1 to L8) and seven genotypes represented by commercial hybrids (CH experimental code; CH9 to CH15) were considered. The production of maize ears, Y(ears), varied between 6,236.00±570.14 kg ha_-1 in hybrid L4 and 12,839.33±570.14 kg ha_-1 in hybrid CH15. The physical grains production, Y(pgp) varied between 5,371.00±524.39 kg ha_-1 in hybrid L4 and 11,640.00±524.39 kg ha_-1 in hybrid CH15. The recalculated production (STAS, 14% moisture), Y(STAS) varied between 5,371.00±507.36 kg ha_-1 for hybrid L4 and 11,579.33±507.36 kg ha_-1 for hybrid CH15. The protein content (Pro, %) varied between 7.20±0.33% in the CH14 hybrid and 10.60±0.33% in the L3 hybrid. The oil content (Oil, %) varied between 5.20±0.09% in the CH15 hybrid and 6.40±0.09% in the L1 and L2 hybrids. According to PCA (95% confidence), the hybrids from group L were placed associated with the content of protein (Pro) and oil (Oil) as biplot. Hybrids from the CH group were placed associated with the Y(STAS) parameter. PC1 explained 72.693% of variance and PC2 explained 17.704% of variance. For the selection process of genotypes in breeding programs, the genotypes from the CH group (commercial hybrids) are of interest for the production potential, and the genotypes from the L group (Lovrin) are of interest for the quality indices (Pro, Oil).

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