We hypothesized that the chlorophyll presented in the cotyledons of mature desiccated seeds of all species in the present study might be able to photosynthesize during the primary germination stage. The hypothesis accurately predicted these results, not using exact numbers or days in the prediction. While the germination of the euhalophyte S. However, you do need to make sure they have all the nutrients they need. Your experiments will give you the results. These seeds lacked endosperm and the embryonic cotyledons for all species were green in both the mature dry seeds and seeds moistened with distilled water for 12 h.
Investigations into salt resistance have, unfortunately, mainly been focused on conventional crops, with few studies screening the potential of available halophytes as new crops. The germination process was not hindered by any of these elements with the seeds set to germinate at tap water, which explains why the most seeds germinated at the fastest rate. Oxygen — to enable aerobic respiration 3. Diverse genes and physiological functions. Water — to metabolically activate the cells within the seed 2.
Add Parthenium-extiact in one set of petri-dish to keep the blotting paper completely wet. Some morphological modifications at the individual root level can affect the structural and physiological characteristics of the entire root system and this can change water uptake and nutrient supply by plants. We were able to do a total of 5 repeats for each concentration which meant we were able to ensure greater reliability of our results. Seed germination in relation to salinity and temperature in Sarcobatus vermiculatus. Using salt as an osmoticum in saline environments appears to allow seeds to germinate more rapidly, and at lower osmotic potentials than they might otherwise be able to. The reaction was started by the addition of H 2O 2 and ascorbate oxidation measured at 290 nm for 1 min. Salinity of Water mol L-1 Mean number of mung bean seeds with a cracked testa four days after being exposed to the solution Key Colour used to indicate the calculated example mean Colour used to indicate the data used to calculate example standard deviation Note: All results have been rounded to one whole number, as living organisms including seeds can only be counted whole numbers.
Three seeds were sampled randomly every 4 h. Also, the radish seeds used in this experiment were all bought from the same store on the same day, and were from the same pack. As in previous studies, germination proceeded more rapidly as temperature increased. Do not add anything in one set of petri-dish and let it remain dry completely. The Effects of Salinity on Wheat Germination Essay Sample To investigate the effects of salinity on the germination of wheat plants.
It allowed us to complete the experiment with accuracy excluding the human errors present. The reaction mixture contained 1 mL of potassium phosphate buffer 0. Annual Review of Plant Biology. Any seeds in the NaCl treatment that had not germinated after 10 days were subsequently transferred to distilled water for another 8 days to test the recovery germination. However, few studies have been conducted to test the function of cotyledonal chlorophyll during the early stage of seed germination.
For the small seeds, we found stimulating effects of chloride salts both pure and mixed under 0. Anything which would hold the water in but not soak the seeds too much. I want to thank you for being so professional in your demonstration. Does mold develop on the seed? Effect of Salinity on Germination Essay Sample Colour used to indicate the raw data used to calculate example mean Colour used to indicate the raw data used to calculate example standard deviation Raw Data table 2 showing the effect changing the salinity of water added to ten ungerminated Vigna radiate mung bean seeds has on the seeds ability to successfully germinate as determined by the visible presence of a radicle seven days after the solution was added to the seeds? Critical Reviews in Plant Sciences. The specific cause for the lack of germination in non-germinating seeds is unclear, although the water content and sodium concentration of those treated with NaCl was generally higher than the germinating seeds Fig. Though important this is a very vulnerable stage in the plants life and can be negatively affected by abiotic factors.
Salinity resistance and plant growth revisited. Label the top and bottom of each plate with the letter of the solution to be used in each one A through J. Effects of temperature, salt, and osmotic potential on early growth of wheat Triticum aestivum. Treatments in which none of the seeds germinated were incubated under their respective conditions until no further germination was noted for any treatment in the entire experiment for 5 d. Evaluation: Limitation of the method How significantly could this have impacted on your results and why Improvement The seeds were different colours and they also had different textures from wrinkled to smooth The different colour of the seeds indicate different ages, with the darker the seed indicating the older more dried out seeds.