The experiments were carried out with the aim of testing under climate chamber conditi-ons at low positive temperatures (+4˚С, +8˚С) and the optimal temperature (+25˚С) of soybean lines obtained by experimental mutagenesis (γ rays) to select genotypes capable of germinating under low temperature conditions that are recorded in the Republic of Moldova at the end of march - beginning of april. Climate change in recent years is a global phenomenon with a direct impact on all agri-cultural crops. These climate changes are also felt in the territory of the Republic of Moldova, where the cultivation of spring crops is associated with a high risk due to regular droughts that leave their mark on the production of agricultural crops, leading to important harvest losses or the death of plants. In addition, due to climate warming in recent decades, the frequency, dura-tion and intensity of summer droughts are continuously increasing [1]. In the soybean crop, the most sensitive phase of the ontogenesis is the filling of the grain, which occurs in August - the driest period of the year, which often leads to incomplete filling of the seeds and a noticeable decrease in yield [2]. In order to avoid thermal and water stress conditions in critical moments (flowering, grain filling), technological methods can be used through early sowing and the se-lection of genotypes from groups of lower maturity [3]. Germination and emergence of soybean seedlings of the vast majority of varieties are able to withstand only short-term frosts, up to minus 2 - 4 ˚С. In the Republic of Moldova, soybean sowing is recommended in the second half of April - the beginning of May. One of the ways to increase the profitability of soybeans is to move the sowing dates to earlier and extra early dates (late winter - early spring). This requires varieties resistant to low temperatures, with an active development of plants in early spring against the background of low positive temperatu-res and to survive late spring frosts. An early sowing date for these varieties provides the basis for productivity, as it makes optimal use of the remaining soil moisture from the dry weather winter and allows them to ripen a month earlier than usual, eliminating August droughts [4]. At the same time, early sowing brings a series of advantages to the farmer, limiting their economic risks [5].