Published in Scientific Papers. Series A. Agronomy, Vol. LXII, Issue 1
Written by Dorina BONEA, Elena BONCIU
Grain yield is one of the most important traits in maize breeding programs and depends on the association of different plant traits. Twenty maize hybrids were evaluated to explore the relationships between yield and associated traits, at Agricultural Research and Development Station Simnic. This experiment was conducted under two environmental conditions: 2017 (drought stress) and 2018 (non-drought) and was planted in a randomized block with three replications. Significant differences (p≤0.05) were found for all the studied traits excepting: the days to 75% anthesis, the days to physiological maturity and the protein content under drought stress conditions. In non-drought conditions were found significant differences for all the studied traits, excepting the days to physiological maturity and the shelling percentage. Correlation analysis revealed that grain yield exhibited a significant negative correlation only with hectolitre weight (r = -0.5310) in drought stress conditions, and significant positive correlation only with thousand grains weight (r = 0.485*) in non-drought conditions.
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