The study of ecological factors, influence on germination and root growth in three corn cultivars

In order to determination the effects of pH and salinity on germination and root elongation in three corn (Zea maize.L) cultivars, an experiment was conducted in factorial on the base of randomized complete design with four replication in agronomy lab. of Islamic Azad University Science and Research Branch of Tehran-Iran 2014. The ecological factors included three levels of pH (6.5, 7.5 as control and 8.2) as well as three levels of salinity (Distilled water as control, 6 and 10 g/l of sodium chloride) effect on three corn cultivars (KSC703, 704 and 705) had observed. Each unit test was considers a petri dish with 9 cm diameter and 10 seed of specie slightly and had employed ecological treatment. The results indicated that increasing of pH and salinity had negative effects on seed germination and root elongation also the anova analyzing showed KSC703 as the most resistant cultivars.