The most utilized parameter to evaluate the physiological quality of seeds is the
germination test. However, citrus seeds present slow germination and germination test may be
extended for up to 60 days. In this way, the need for the development of rapid tests to estimate the
viability of seeds appears. The evaluation of the physiological quality of citrus seeds by means of
fast tests may be considered as an extremely helpful resource for seed-producing enterprises in the
sense of enabling a faster and more efficient quality control. So, the objective of this research
work was to adapt rapid test methodologies to determine the viability of Citromleo swingle seeds
assessed in four storage periods. The tests of tetrazolium, of electric conductivity and of exudate
pH (phenolphetaleine) were employed. The test of emergence on tray and germination pattern
were utilized for comparing the results obtained in those above-quoted. The rapid tests for evaluating
viability proved promising for germination monitoring and seedling emergence from the third
month?s storage and in the absence of dormant seeds emergence from the third month?s storage.