Published in Scientific Papers. Series "Management, Economic Engineering in Agriculture and rural development", Vol. 25 ISSUE 2
Written by Ovidiu EREMI, Alina Laura AGAPIE, Marinel Nicolae HORABLAGA, Daniela HORHOCEA, Busuioc VACARIU, Florin SALA

The research evaluated the yield and seed quality indices of 15 corn hybrids created within NIARD Fundulea. The comparative corps was organized under the specific climate and soil conditions of ARDS Lovrin. Yield (Y) recorded values between Y = 4,126.00–6,786.00±186.46 kg ha-1. Physical indices of seeds recorded values TKW = 204.41–316.45±7.93 g (TKW – weight of 1000 seeds), HW = 73.50–79.90±0.42 kg hl-1 (hectoliter weight). Cluster analysis (CA) generated the grouping of corn hybrids, according to similarity, based on the studied parameters (Y, TKW and HW). Hybrid 8029 was associated with hybrid 8025 with high yield values (Y = 6,786.00 kg ha^-1, Y = 6741.00 kg ha^-1) and TKW (TKW = 316.45 g, TKW = 315.54 g). In the case of the HW index, hybrid 8027 (HW = 79.90 kg hl^-1) was positioned with the highest values, followed by hybrid 8021 (HW = 78.20 kg hl^-1). Multivariate analysis generated the differentiated distribution of corn hybrids according to the principal components, in which PC1 explained 49.303%, and PC2 explained 40.077% of total variance. Based on the three parameters considered (Y, TKW, and HW) a ranking of the corn hybrids was done.

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