Conduction of the accelerated aging (AA) test of seeds of the maize collection accessions allowed determination of their storage potential (SP) which is an important complex characteristic of seed material while being placed for long-term storage in plant gene bank. Based on morphophysiological and biochemical parameters of seeds and seedlings, genotypes from work and active collections were ranked with due consideration of their potential capabilities to maintain viability (V) after the influence of stress factors during the process of accelerated aging of seeds (increased temperature of 4244°C and increased humidity of 90-100%); aging period: 96 hours. The test allows for: 1. Identification of the accessions not suitable for storage that enables saving funds for conservation; 2. Formulation of recommendations on the terms of reproduction of seed material; 3. Indication of the necessity to restore viability of especially valuable collection accessions. Purpose of this work was to study various parameters of the maize seeds and seedlings after AA-test of seeds in order to determine their SP and perform randing of genotypes by this trait.   Test objects: maize hybrids from the plant gene bank of Moldova: Р 402, Р 280, Р 310, Р 294, Р396, Р 196, Р 397, Р 374, Р 461, Р 262. The following parameters were measured: germinating power (GP) and germinability (G) of seeds, main radicle length (RL), fresh and dry biomass of rootlets of the seedlings, content of peroxidase (PO) enzyme in rootlets of the seedlings. Results were prosessed with the help of software package Statistica.Depending on the decrease of germinating power of seeds after AA-test of seeds, maize genotypes were divided into 3 groups: 1 – decrease of GP was 10-15% (Р 402, Р 280, Р 310); 2 - 18-20% (Р 294, Р 396, Р 196, Р 397, Р 374); 3 - 25-30% (Р 461, Р 262). By germinability, seeds were divided into 2 groups: 1 – decrease of G was 19-25% (Р 402, Р 461, Р 294, Р 196); 2 - 33-42% (Р 396, Р 397, Р 374, Р 280, Р 262, Р 310). After AA-test of seeds, length of rootlets decreased by 10-37% as compared to control. The highest growth inhibition of rootlets of the seedlings was observed in Р 294, Р 374 genotypes, the lowest - in Р 402 and Р 196 genotypes. Analysis of data on fresh and dry biomass of rootlets after AA-test of seeds showed the same trend. Decrease of these parameters depending on genotype was 17.3-55.1% and 10.0-65.5%, respectively, as compared to control. After processing of data using software package Statistica, significant positive correlation of germinability of seeds with GP (r = +0.55), RL (r= +0.66), fresh biomass (r= +0.69) and dry biomass (r= +0.53) of seedling rootlets was found in all maize genotypes. RL of rootlets correlated with germinability of seeds (r= +0.66), fresh biomass (r= +0.69) and dry biomass (r= +0.58) of seedling rootlets. It was revealed that peroxidase content increased in seedling rootlets after AA-test of seeds by 1.67–2.63 times, depending on genotype, as compared to control that is typical under the thermal stress. After AA-test of seeds, genotypes Р 294, Р 260 and Р 310 showed maximal increase of PO enzyme activity in seedling rootlets (by 2.6; 2.0 and 2.0 times, respectively) as compared to control. Analysis of the experimental data set by different morphophysiological and biochemical parameters of seeds and seedlings of maize collection accessions showed that genotypes Р 402, Р 294, Р 461 had the highest storage potential, and genotypes Р374 had the lowest storage potential.  Thus, the use of the accelerated aging test of seeds allowed identification of genotypic features of the maize collection accessions and their grouping by their potential capabilities to maintain seed viability following the influence of stress factors (increased temperature and increased humidity).