How does salinity affect seed germination experiment?
Our results demonstrated that all salts, at lower concentrations, increased the germination rate but not the germination percentages, compared with control (pure water). Conversely, seedlings were differently affected by treatments in respect to salt type and concentration.
How does salinity of water affect seed germination?
Salinity affects seed germination process through osmotic stress, ion-specific effects and oxidative stress, shown by decreasing germination rate and extended germination time [82]. Salinity increases external osmotic potential that reduces water uptake during imbibition [83].
How does salinity affect plant growth experiment?
The experiment shows that salt is damaging to plants. The damage increases as the salinity increases. In pure freshwater, cut vegetables should remain largely unchanged for several days without showing much sign of wilting. The higher the salt concentration in the water, the worse the plants will fair.
How do salt water and tap water affect the seed growth?
Tap and distilled water without salt were used as controls. The results were that the germination was 100% with the controls, tap and distilled water. On the groups exposed to salt water, the germination decreased as the salt concentration increased, and no germination occurred at amounts of 1.5 tsp. of salt or higher.
How does salinity affect radish seed germination?
The results of my investigation of the effect of salt-water on the germination of radish seeds showed that salt in the soil caused the seeds to struggle to grow. At the end of 3 weeks, the radish seeds tested in salt-water could not tolerate the salt-water exposure. These plants sprouted, however they failed to mature.
How does salinity affect root growth?
The results indicated that salinity caused a reduction in root growth (volume, area, diameter, total and main length and root dry weight), and shoot biomass accumulation. Both root and leaf sodium (Na) content and leaf proline content increased with increasing salinity.
Do seeds grow better with salt water?
On the groups exposed to salt water, the germination decreased as the salt concentration increased, and no germination occurred at amounts of 1.5 tsp. of salt or higher. This supported the hypothesis, which was, “The more salt in the water, the fewer seeds will germinate.”
Does salt effect seed germination?
A high salt level interferes with the germination of seeds. Salinity acts like drought on plants, preventing roots from performing their osmotic activity where water and nutrients move from an area of high concentration.
How does salty water affect plant growth?
When saltwater enters the soil, the plant tries to absorb it throughout its roots like normal water. However, saltwater does not allow for osmosis through the plant tissues. It is so dense that the salt solution actually draws water out of the plant, dehydrating and eventually killing it.
What is the relationship between salt concentration and lettuce seed germination?
Lettuce is considered to be a relatively salt-sensitive vegetable (Barassi et al., 2006). Salinity has been shown to reduce seed germination, fresh and dry weight of shoot, and root weight of lettuce both by ionic and osmotic effects (Barassi et al., 2006; Tarakcioglu and Inal, 2002).
How does salinity affect plant cells?
If a higher concentration of salt is placed outside of the cell membrane, the water will leave the cell to bond with it. The loss of water from this movement causes plant cells to shrink and wilt. This is why salt can kill plants; it leaches the water from the cells.