Influence of stratification on germination of Pinusleucodermis

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Abstract
The influence of cold–moist stratification on germination of Pinusleucodermis Antoine seed collected at different altitudes in Calabria, Italy, was studied. Germination was significantly enhanced by stratification up to 40 days. Cumulative percent germination for nonstratified seeds was less than half of that for seeds stratified for 40 days. Cumulative percent germination was higher at 30:20 °C (8:16 h) thermoperiod than at a constant temperature of 20 °C. Germination was generally higher in seed lots from lower altitudes. A significant interaction was observed between stratification and temperature.

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