Potencial fisiológico de sementes crioulas de Phaseolus lunatus L.

Abstract

Phaseolus lunatus L. is grown in almost all regions of the world, with the United States as the largest producer, followed by Brazil. The collection and storage of seeds only ensures that the genetic resource is not lost over the years but does not make the use of these genotypes sustainable, so it is necessary to conduct studies to differentiate them as to the physiological potential of the seeds. The objective of this work is to establish a methodology for the test of electrical conductivity, to evaluate the physiological potential of the seeds of fava beans aiming at the emergence of seedlings in the field. The culture of fava has deserved little attention from research and extension bodies, therefore, obtaining information about physiological and sanitary quality, through the analysis of its seeds should be sought. The collections of seeds of the broad bean varieties were carried out in “sertanejas”, quilombolas and indigenous ethnic communities in municipalities in the State of Maranhão. Ten lots were used, determining the water content, germination test, first germination count, germination speed index, tetrazolium test, seedling length, electrical conductivity test and seedling emergence in the field. The electrical conductivity test using 25 seeds immersed in 100 mL of water and readings after three hours is efficient in assessing the vigor of lots of bean seeds, providing information equivalent to emergence of seedlings in the field