Λεπτομέρειες Εργασίας

The aim of this project was to verify the influence of halobacteria on the development and germination of lettuce. For this, initially, halobacteria were isolated of the root of plants of Ria de Aveiro and the effects of them were studied in the germination of the seeds of the plant. After the conclusion that the salinity influences the germination of lettuce, tests with saline solutions of 6 ‰, 12 ‰ and 18 ‰ with the addition of halobacteria and organic osmoprotectors (ectoine and betaine) were carried out in lettuce seeds and in the development of adult plants, maintaining control with the solution of 0 ‰. The replicates were all in the same luminosity and temperature conditions and were watered with the same amount of solution. The results showed an increase in the number of germinated seeds and photosynthetic levels of plants (measured with a chlorophyll meter) in saline environment, evidencing, therefore, indications of osmoprotection in both cases. Thus, we conclude that the hypothesis proposed is viable.