TESTING LIVING CAPABILITIES OF SEEDS OF WHEAT VARIETYS FROM BANJA LUKA (COLD TEST)

Low temperatures and drought as well as other abiotic factors, have a negative effect on a quality and amount of all grains, including wheat, which could cause great problems in near future considering that grains are foundation of nutrition in a majority of world population. Low temperatures and other stressful factors cause the forming of reactive compound inside the plant, which lead to damaging plant membranes and macromolecules. Water availability and its movement is very important in the process of seed germination, for starting seed grow and cotyledon extension. These processes are largely affected by the lands chemical potential, texture and contact area of seed and land. Two year research (2014-2015) included tracking parameters of seed germination with „cold” test in four varieties of winter wheat selected in the Agricultural institute of Republic of Srpska (Kristina, Bosanka, Orion, Jelena). The seeds used, were three or four years old. The variety Jelena had the largest percent of germination, while the variety Kristina had the longest root, as well as the largest root and coleoptiles mass. The older seeds had worst results compared to the younger ones.