Methods for evaluation of physiological quality of vigna bean seeds

The aim of this research was to compare vigor tests for seed quality evaluation. Four seed lots of vigna bean (Vigna unguiculata W.) of two cultivares (EPACE-10 and IPA-206), were stored for six months (november/94 to may/95) at natural environmen conditions of Pelotas, RS, Brazil and evaluated at two month intervals, throught the following tests: germination, accelerated aging, cold test without soil, electrical condutivity, seedling dry weight and field emergence tests. The analysis and interpretation of the results showed that the evaluation of the physiological quality of vigna bean seeds needs to be based on different vigor tests. Among the tests, the cold test without soil was the best related with seedling field emergence. The seedling dry weight was not effective to separate vigna bean seed lots in different vigor levels.

Vigna unguiculata; vigna bean; germination; vigor; storage

Escola Superior de Agricultura "Luiz de Queiroz" USP/ESALQ - Scientia Agricola, Av. Pádua Dias, 11, 13418-900 Piracicaba SP Brazil, Phone: +55 19 3429-4401 / 3429-4486 - Piracicaba - SP - Brazil