Pretreatments effect on seed germination and early growth of Gleditsia Triacanthos L. seedlings

الملخص EN

The experiment was carried out in the forest nursery in the faculty of agriculture/university of Duhok, to investigate the effect of hot water and sulphuric acid for during times on the seed germination and seedling growth during the growing season.

The results showed that the seeds of Gleditsia triacanthos L.

soaking in hot water at 90C° for 20 minutes and sulfuric acid (98%) treatment for 90 minutes, were the best method for breaking dormancy of Gleditsia triacanthos which resulted in an increased germination percentage and germination rate to (52.66%, 49.33%) and (2.589, 1.220) respectively, compared with control (2.5%) and (0.104) respectively.

Stem length, stem diameter and root length, followed the same trend of higher value in sulphuric acid and hot water for 90min.

and 30min.