EFFECT ON MECHANICAL DAMAGE ON CASTOR GERMINATION AND DAMAGE DETECTION METHOD

To study the types of mechanical damage for castor seeds and their effects on germination, image processing method was applied to detect affecting germination. Two typical varieties were selected test. The type taken as factor, germination rate vigor index indicators one-way analysis variance. analyzed. Different algorithms extract features cracks seed shell missing, corresponding defect parameters calculated. results showed that rate, potential, index, significant. endosperm seriously affected activity hindered According shell, some cracked or there incomplete at same time, internal being also damaged. actual crack length compared with measured by ultra-depth field microscope, which found margin error about 25% better 10%. Through morphological processing, it could completely characteristics without shells. between extracted feature area object function super depth microscope is