Aims and Scope: Nowadays, nanotechnology is used in many different sciences. Plants are no exception. Therefore, we decided to study the beneficial effect of titanium dioxide and titanium dioxide nanoparticles phytotoxicity on some physiological characteristics of Melissa officinalis plant including germination, root length, shoot length, and photosynthetic pigments. The experiment was conducted in 2013 in the Research Laboratory of Islamic Azad University of Falavarjan, Isfahan, Iran.
Methodology: Seeds were treated with solutions of titanium dioxide and titanium dioxide nanoparticle in 4 replicates. The obtained results were the mean of 4 replicates ± SD. Finally the results were analyzed using SPSS18 statistical software.
Results: Results indicated that different treatments of TiO2 and N-TiO2 compared to the control group had no significant effect on germination percentage. However, they had a positive effect on root length, shoot length, and photosynthetic pigments (chlorophylls and carotenoids).
Conclusion: At low concentrations, titanium dioxide nanoparticles and titanium dioxide had a stimulatory effect on all parameters except the germination.
Introduction
Nowadays as the population grows increasingly, the need for food and medicine also increases. Meanwhile, in order to meet their basic needs, human societies have turned to different plants. And so far several studies have been conducted so as to get the most out of plants in different food and medical fields. On the other hand, with the advancement of different sciences, we witness the use of a variety of conditions for better growth of plants. One of these sciences which has had increasing developments in the last century is nanotechnology. In recent years, Nanotechnol...
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...th and stated its cause shoot biomass due to a lower one (Samadi et al., 2014). However, in our study increased stem length.
Since both lemon balm and mint are of Lamiaceae family can be concluded that TiO2 and N-TiO2 have no effect on the germination of plants in this family and causes to reduce germination compared to control. But it causes to increase in photosynthetic pigments and root length. Still, the study shows effects of TiO2 and N-TiO2 on Melissa officinalis, but to understand the positive and negative effects of nanoparticles on other physiological characteristics of Melissa Officinalis requires further investigation. It is necessary to examine aspects of its growth affected of nanoparticles and then release to market. Because, lemon balm plant is known among people and its use is very common as a food and medicine, particularly in traditional societies.
This experiment was performed to test two hypotheses concerning the plant hormone gibberellic acid and a mutant rosette shaped phenotype of the plant Brassica rapa. This experiment was done in order to test the effects o gibberellic acid on plants and its effect on rosette shaped complexes. The two hypotheses in this experiment are as follows: Hypothesis number one states that Gibberellic acid allows for stem elongation in plants. Hypothesis number two. The rosette complex in the rosette phenotype plant contains less gibberellic acid naturally and therefore grows shorter.
Although, this experiment is not concluded outdoors, it is provided with efficient light that promotes growth. It’s provided with soil, seed, fertilizer, water and NaCl solutions, to test how salinity effects plant growth.
The experiment was designed to test the hypothesis by planting an increasing number of genus Helianthus (sunflower) seeds in pots to see how they respond to increased density in limited space. Two replicates each of 2, 4, 8, 16, 32, 64, and 128 seeds were planted in similar size pots containing an equal mix of potting soil and perlite. All plants were kept in greenhouse conditions exposed to similar light and temperatures settings and were watered at equivalent intervals. At the end of the time period each pot was evaluated for number of seeds that had germinated as well as number of stems with blooms. Stems and blooms were cut and weighed.
The germinating seeds consumed almost no oxygen throughout the experiment in the 10-degree C water bath. I think that this is because when an organism cools down, all of its cellular functions slow down.
Amandi Hiyare: Before forming my research question, I had a discussion with my research project coordinator “Lisa Pope” who told me that the Flinders nanotechnology research team has been developing microbial catheters. Then on Monday I had an interview with Professor Joe Shapter who told me that your team was leading this project. So I was wondering whether you would be able to provide me with some detailed information about this innovation?
Abstract: Gibberellic acid is a plant hormone that is used to stimulate growth and fasten the germination of plants. When Gibberellic acid used on plants, it produces bigger and fuller leaves following by elongating the stems. This experiment was designed to determine the effect that Gibberellic acid will have on the growth of a seed germination. As performed in class, three types of radish seed were treated with Gibberellic acid to see the effects the acid will have on those three seeds. During the treatment plan, the three seeds received a different amount of acid and water five times a week. For instance, Seed A got approximately 2.5ML of Gibberellin acid, seed B got 5.0ML, and seed C got 10ML, following by seed A getting 17.5ML of water, seed B getting 15.0ML, and seed C obtaining 10ML of water. However, based on this treatment plan, seed A and B showed no growth. While, the seed that consumed more acid, which was Seed C showed rapid growth. In this case, the only possible explanation for this surprising result could be that the Seeds
The Effect of Sodium Chloride Concentration in Growing Medium on the Growth and Total Germination of Cress Seeds
The level of Nitric Oxide in the plants were measured by taking samples of the root and the leaves. A dye was applied to the nitric oxide in order for it to be more clear when viewed.
The graphs helped show the levels of oxygen and carbon dioxide in the bottle when it came to testing germinating seeds, non-germinating seeds, and crickets. For the germinating seeds, the oxygen levels were rising and the level of carbon dioxide was slowly rising. This relationship shows that the germinating seeds were in the process of cellular respiration. The O2 is a product of the germinating seed while water and oxygen are the reactants needed to start respiration and make ATP. The non-germinating seeds, however, didn't show any drastic change in O2 or CO2 levels, when it came to the graphs. The reason why this occurred was because non-germinating seeds aren't growing, but are rather dormant. However, very little oxygen was being used,
Lima bean and wheat seeds will be used and it takes about five days to germinate. The independent variable will be the molarity of aspirin water from 0.2, 0.4, 0.6, 0.8 and 1.0 M. Molarity is used to express concentrations of plant hormones. The height of the lima bean and wheat seed plant when finished growing is the dependent variable. The growth will be measured using a ruler in centimeters to see which plant responded better to aspirin water. The plants will be grown in Dixie cups with an equal amount soil and will be given 100 mL of aspirin water. The seeds in will be placed with 1 ½ - 2 inches deep in the loose and fertile soil. The seeds will have several days to grow and germinate before it will be measured for growth. In conclusion, if the plant with aspirin water grew longer than the plant with distilled water then it shows that aspirin water can help improve the growth and germination of
Seedlings characteristics are during the growth time as a crucial factor in determining the ultimate fate of the plants. Therefore should be tried always seedlings have to very good condition. Seedling growth and quality are under influenced by environmental factors including light intensity (Lavendar, 1984). If environmental factors such as light intensity changes, also are under affect other factors and final quality of seedlings (Chaar et al., 1997). Seedling producers with changing and optimizing the light intensity regulated the seedlings growth, development, and plant vegetative quality (Lavendar, 1984).
Thus, the aim of this experiment is to investigate the effect of light, planting depth and hormones on seed germination.
Week 2 reading: woody plant growth and development; shoot system. I find knowledge of the shoot system and its inner workings in woody plants to be important to understanding how why they grow the way they do. The shoot system supports everything on the plant including buds, leaves, flowers and fruit. It also functions in the transport of water, minerals and nutrients and in the storage of nutrients. The stem is where visible above ground growth occurs. Growth occurs through meristematic tissue either through the terminal or apical bud and the vascular cambium. Knowledge of growth areas of the shoot system can aid you in making pruning and shaping choices. When pruning to direct growth or avoid an obstacle it is good to know what will
...f PGPR increases rate of seed germination, growth of the root, crop yield, plant leaf area, chlorophyll content, nitrogen and protein content in plants, increase the tolerance to drought, weight of root and shoot of the plant and delayed leaf senescence (Dobbelaere et al., 2003; Çakmakçi, 2005, 2005).
Enhanced Nutrient Delivery: Nano-encapsulating improves the solubility of antioxidants, vitamins, healthy omega oils and other neutraceuticals