Testing of rapid vigor method for sorghum (Sorghum bicolor L. Moench) by using radicle emergence

Abstract

Sorghum has a higher protein nutrient content (11%) than rice (6.8%) per 100 grams of ingredients. However the development and yield of sorghum is still low. One of the causes of low sorghum production yields is because seed deteriorate rapidly. The deterioration of sorghum seeds during storage signals a low seed vigor. So it is necessary to improve seed vigor tests efficiency in order to shorten test time. The objective of this research are determining observation time of Radicle emergence test and determining correlation between Radicle emergence test results with vigor test and seed viability. The results showed that radicula observations using Radicle emergence method can be carried out after the seeds are germinated for 96 hours at 25 + 2 0C temperature. The second result show there is positive correlation between Radicle emergence value to the vigor test and viability seed such as Vigor Index, Speed of Germination, Germination Seed, Maximum Growth Potential. It means the higher value of Vigor Index, Speed of Germination, Germination Seed, Maximum Growth Potential, the higher Radicle emergence value. The correlation between Radicle emergence and Mean Germination Time and Sprout Growth Rate changes shows a negative correlation.