Published in Scientific Papers. Series A. Agronomy, Vol. LXV, Issue 2
Written by Ioana Claudia DUNĂREANU, Dorina BONEA
This paper presents the effects of the experimental year and the hybrid (genotype) on the grain yield, protein and oil contents of Romanian commercial maize hybrids. Field trials were conducted at Agricultural Research and Development Station Şimnic located in southwestern Romania, during three successive years (2016, 2017 and 2018). The average grain yield for all hybrids tested was 7.53 t/ha. The 2018 yields were significantly higher than the 2016 and 2017 yields. The F376 hybrid achieved the highest average grain yield and oil content but the lowest protein content. The very dry year 2017 was the best year for the synthesis of protein and oil in maize grains. The average protein content for all hybrids tested was 14.5% and the average oil content was 5.1%. Oituz and F423 hybrids achieved the highest average protein content compared to other hybrids tested. The Oituz hybrid also achieved the highest average oil content (except the F376 hybrid). The combined three years of data revealed that grain yield was significantly negatively correlated with the protein and oil contents.
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