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Jordan University of Science and Technology (JUST) 1991

The Effect of Environmental Factors on Seed Germination of Three Crop Species

Zeyad Ahmad Hasan Al Quraan

Titre : The Effect of Environmental Factors on Seed Germination of Three Crop Species

Auteur : Zeyad Ahmad Hasan Al Quraan

Université de soutenance : Jordan University of Science and Technology (JUST)

Grade : Master of Science (MS) 1991

Résumé
The effects of various environmental factors on seed germination are of much interest to scientists and researches in both environmental and agricultural fields. This study involved the evaluation of germination for various types of seeds under variable environmental factors ofpH, temperature and induced vibration. pH, temperature and ultrasonic vibrations were the factors concerned. Their effects were studied on medic, wild wheat and faba bean germination. Results showed that the effect of these factors varied from one seed type to another. Commonly, the results indicated slow germination at low temperature (T- 5C), and high germination at high temperature (T- 25C). Acidic nutrition media was not favoured by the wild wheat, and there was clear interaction due to the effect of hydrogen-ion cocentration for othertypes of seeds. The final percentage of germination was (he highest at pH of 8 for all seed types. Ultrasonic vibrations of 60 KHz frequency improved the final percentage of germination for medic and faba bean (germination was almost 100%), and germination of faba bean was faster than the control during the entire test, while wild wheat germination was extremely affected by the level and intensity of vibration.

Présentation

Page publiée le 24 octobre 2016, mise à jour le 23 mars 2019