Effects of Giberlic Acid, Sulfuric Acid and Potassium Nitrate on Seed Germination of Three Native Species of Hawthorn of Iran

Document Type : Research Paper

Authors

1 M.SC Research Institute of Forest and Rangelands

2 Faculty Research Institute of Forest and Rangelands

Abstract

In this study seed germination problem of this genus regarding different various methods were
tested. Pretreatments were conducted using giberlic acid, KNO3 & Sulfuric acid. Three endemic
species including Crataegus babakhanloui, C. aminii, and C. persica were studied. To evaluate
the germination responses, experiment were carried out as a completely randomized design
with three replications that each replication contains 30 seeds. Results indicated that the most
effective treatment for C. aminii is KNO3 1% with 38.66% seed germination. Sulfuric acid
treatments (98%, ‹15) and Sulfuric acid 50% for ‹15 and ‹30 minutes had no germination. In
C. babakhanloui, kno3 1% treatment with 44% germination and Sulfuric acid treatments (98%,
‹15) with 9.33% germination has the highest and the lowest success respectively in compare
the other treatments. In C. persica KNO3 0.5 % treatment with 49.33% seed germination has
the highest germination rate, in contrary there was no germination in Sulfuric acid treatments
(98%, ‹30). Despite of better performance of potassium nitrate treatment, it does not seem a
practical method for germination. In this case for mass germination stimulus, sulfuric acid
treatments look more practical.

Keywords

References

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