Variety traits
Stay-green in maize
Zea mays L.
A genetic trait of maize hybrids where stems and leaves retain green color and photosynthetic activity after the grain has reached physiological maturity.
In the reference 51 varieties crop Maize, where this is mentioned in the description.
In maize, the term 'remontancy' is replaced by the concept of 'stay-green'. Plants with this trait delay the senescence process and continue to function even after the 'black layer' has formed in the grain. To assess the expression of the trait, visual scoring of leaf yellowing, calculation of the green leaf area duration (GLAD), and instrumental methods, including chlorophyll index measurement using SPAD meters and chlorophyll fluorescence (Fv/Fm) assessment, are used.
The presence of the stay-green trait provides greater flexibility in harvest timing, which is particularly important for silage production, as it allows for the maintenance of optimal biomass moisture content for a longer period. Furthermore, such hybrids demonstrate increased tolerance to drought and thermal stress factors. Prolonged tissue functionality also contributes to the improved phytosanitary reliability of the crop by reducing the risk of stalk rots, which often affect prematurely dying plant parts.
General information about the subject — on the page Remontancy.
Varieties of Maize mentioned in the description
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
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