CORRELATION AMONG VIGOR TESTS ON CARROT SEED FOR DIFFERENT PERIODS

Abstract

Carrot seeds lots (Daucus carota L.) cultivar Brasília were collected during four consecutive years processed, analyzed, for the moisture content and germinability. Thereafter seeds were stored with 6% moisture content at 15°C and 45% of relative humidity. The seed quality was evaluated by germination and vigor tests. (field emergence, accelerated ageing for a period of 24, 48 and 72 hours and electrical conductivity an half hour and 4 hours of solutes leaching). This paper discusses some procedure for germination and vigor tests, which could be adopted as altemative methods. The germination test using the rolled towels as substrate and evaluated at the 4 4 day shows significant correlation with field emergence and electrical conductivity. Significant leveis of correlation were also observed among accelerated ageing 48 hours and electrical conductivity an half hour (r =0,97); field emergence and accelerated ageing 72 hours. (r =0,83). The electrical conductivity test is most indicated to estimation of seed vigor due to the practical use, objectivity and rapidity for its performance.