Effect of Low Temperature on Germination, Growth, and Seed Yield of Four Soybean (Glycine max L.) Cultivars

During germination at low temperatures, seeds rich in proteins may experience damage to their cytoplasmic membranes. The study aimed investigate the influence of temperature on growth, development, and yield four cultivars soybean, a typical thermophilic species. were germinated 10, 15, 25 °C dark. After 48 h, one part was analyzed for amylase dehydrogenase activity, cell membrane permeability, vigor. other transferred into soil cultivated up yielding. Chlorophyll fluorescence, fresh (FW) dry weight (DW) shoots, pod seed number, DW analyzed. plants cvs. ‘Abelina’, ‘Malaga’, ‘Merlin’, germinating temperature, produced highest number seeds. Seed negatively correlated with positively active reaction centers (RC/CSm) all cultivars. In ‘Abelina’ also index performance photosystem II (PSII), which temperature. We suggest cultivating cv. cooler regions, while ‘Petrina’ ‘Malaga’ warmer areas.