Vigor evaluation of stored cotton seeds, including the Seed Vigor Imaging System (SVIS?)

摘要

This study aimed at evaluating efficiency of different tests to assess cotton seed vigor during storage, including the SVIS? software. Thereby, five cotton seed lots (cv. BRS 293) were stored under controlled environmental conditions of low temperature and relative humidity (10 oC; 30% RH), and under non-controlled laboratory environmental conditions, for eight months. Evaluations of germination, first germination count, cool germination, accelerated aging test traditional and with saturated salt, field seedling emergence and seedling imaging automated analysis - SVIS? were performed before and after every two storage months. It was concluded that the cool germination, accelerated aging (traditional and with saturated salt), field seedling emergence and seedlings length (SVIS?) are adequate parameters for assessing vigor of cotton seeds during storage, and that both accelerated aging and SVIS? (vigor index and seedlings length) present enough sensitivity to identify changes on seed vigor during storage.