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Respiratory rates of Eugenia pyriformis Cambess. seeds of different maturity at shedding

ABSTRACT

In the present study, the respiratory rates of Eugenia pyriformis Cambess. seeds were analyzed according to the material origin, submitted to different drying levels and incubation temperatures, including the analysis of environmental conditions during seed formation. The results showed variations in the respiratory intensity of these seeds as a function of origin, mainly among freshly dispersed seeds (without drying) or when submitted to more severe drying and adverse germination temperatures. The highest the seed water content at shedding, the highest the respiration rate. Such variations suggest differences in the maturity of seeds from different regions, with influences of environmental conditions during seed formation.

Keywords:
Myrtaceae; recalcitrance; seed conservation

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