Comparison of vigor tests for evaluating sorghum seed quality

Abstract

Six methods were tested comparatively for the evaluation of sorghum seed quality in an attempt to determine the efficiency of the different methods. The following methods were tested: standard germination, first count, speed of germination, ammonium chloride test, accelerated aging and seedling emergence. Results showed that among the tests performed, standard germination and first count were the least sensitive in the evaluation of the physiological condition of seeds. The ammonium chloride and speed of germination tests diferenciated more accurately the degree of deterioration of seeds.