Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Show full item record Recommend this item. Jurnal Hayati, Juni , Vol. Naiola, Beth Paul. Lack of oae of the common resources such as water or excessive concentration of a specific ion such as sodium will cause plants suffer from drought and salinity stresses. Those plants usually develop such a mechanism to servive under those stresses.

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Abstract Water is the most crucial things that affect plant growth and production. Water is also the main constituent of the cell's protoplasm which is why water and plant relations are a unit that cannot stand alone. The most important water function is in biochemical reactions in the protoplasm which is controlled by the enzyme.

In addition to providing facilities for the continuation of a biochemical reaction, water molecules can interact directly as a reactive component in the metabolic processes in cells. When the take up water by osmosis they start to swell, but the cell wall prevents them from bursting. Plant cells become "turgid" when they are put in dilute solutions. Turgid means swollen and hard. The pressure inside the cell rises, eventually the internal pressure of the cell is so high that no more water can enter the cell.

This liquid or hydrostatic pressure works against osmosis. Turgidity is very important to plants because this is what make the green parts of the plant "stand up" into the sunlight. Turgidity is a turgor pressure that is the force in cells that pushes fluid against the cell wall. This is what helps the plant stay rigid and upright. Basically the type of stomata found in plants between one plant and another has a type of stomata that varies, depending on the species of plants.

Even in the same family usually also have stomata types that differ from one species to another plant species, having different types of stomata.

Observations that have been carried out involve two ways, the measurement of the relative turgidity of plant tissue is to measure relative turgidity and water deficit from plant tissue and stomata structure and stomata opening and closing activities, the purpose of which is to know the general structure of stomata and stomata opening and closing. Keyword: Osmotic, stomata, turgidity.

Introduction Water is the most crucial evaporation and transpiration as factor in affecting plant growth and water losses, and rainfall and production.

In order to assess the irrigation as water sources at 1 m - complex relationship between plant depth. Both models were linked by and water, a dynamic model of crop relating the degree of growth growth was constructed by reduction to water deficits. The growth model agreement with observed data in mainly consists of physiological predicting soil water deficits and processes, i. The third cellular rainfed conditions Hidayanti, However, the substance soil temperature regulators, and concentration gradients of water and aeration.

Besides, water for plants dissolved substances are not only plays a role in maintaining cell knowing the direction and rate of turgidity and temperature in the movement of water. The physical plant's body so that its metabolism is pressure which is influenced by the not disturbed into fluctuations in cell walls and evaporation is also environmental temperature. Plant important. Plant physiology refers to cells have cell walls, which result in the combined effect between hydrostatic pressure in the cell's concentration and pressure as from protoplasm, and are called turgor cell walls as water potential, water pressure.

Besides, turgor pressure will flow into the area that also plays a role in the stiffness potentially high to low. One of continuous from cell to cell. Cell is example of potential water, when small unit in every living things. This cytoplasmic continuum is of mankind. Early cultures realized called simplas. The walls of the plant that salt could be used to desiccate cells which are in turn also contact foods for long-term preservation.

A gauge. Such a system would provide selectively permeable membrane a more quantitative measure of the allows passage of water, but rejects amount of pressure necessary to solute molecules or ions. Osmotic prevent water from rising in the pressure is the driving force for system tube due to doing osmosis many of the applications that will be activities Kowles, One of the thermal motion is Review will focus on osmosis diffusion, is a movement of through polymeric membranes, molecules of substances so as to primarily in the field ofwater spread evenly within the available treatment and into desalination.

Osmosis occurs, for solution in water. Suppose it has a example, when an aqueous solution porous membranes are permeable is separated from pure water by a and dye molecules. One way molecule will move randomly, but to demonstrate osmosis is a simple there will be a net transfer of dye set-up using a thistle tube. For molecules across the membrane side example, consider the thistle tube that initially contains only pure containing a sucrose solution, water.

The dye molecule will covered with a semi-permeable continue to spread across until membrane, and placed into a beaker the membrane to the second solution of pure water. Such a device, called has the same concentration each an osmometer, is a simple way to other Campbell, The absorption and water loss when aqueous solution in the thistle tube moving from one part of the plant to will rise because of the entrance of another part and transitions the cell water from the beaker due to via osmosis.

However, the substance osmosis. The amount of rise of water concentration gradients of water and in the tube, designated h for height, dissolved substances are not only is a crude but valid way to measure knowing the direction and rate of osmotic pressure.

A more movement of water. Plant physiology refers to the chemical potential of water when the combined effect between the cell is exposed to hyperosmotic concentration and pressure as from external solute concentrations.

In cell walls as water potential, water highly vacuolated cells, such as the will flow into the area that elongated hypocotyl cells examined potentially high to low. One of cell is lower than that necessary to example of potential water, when abolish the hydrostatic pressure of potential lower in leaves occurs there turgor, namely the point of incipient is the loss of water to the plasmolysis, resulting in volume atmosphere Penuntun fisiologi change as water flows out of the tumbuhan, After plasmolysis, another in the soil such as: solvents, nutrient network of strictly tubular ER transfer media, hydrogen sources, remains attached to the plasma soil temperature regulators, and membrane-wall interface.

The aeration. Besides, water for plants smaller volume of the central plays a role in maintaining cell protoplast is accompanied by turgidity and temperature in the decreased movement rates of tubules, plant's body so that its metabolism is cisternae, and spheroid organelles, not disturbed into fluctuations in but this reduced movement is not environmental temperature.

Plant readily reversed by the increase in cells have cell walls, which result in volume that accompanies hydrostatic pressure in the cell's deplasmolysis Cheng et al, Besides, turgor pressure phenomenon that has been exploited also plays a role in the stiffness by human beings since the early days and mechanical stability of plant of mankind. Early cultures realized tissues Advinda, A selectively permeable treatment and into desalination.

The Time and place workings of this activity are started The practicum was conducted at the by making leaf pieces using ten cork Third Floor of the Biology drills from dry and wet plants. The leaf pieces are then put in a petri dish Tool and filled with distilled water, then The tools used in this lab are covered and placed under a microscope, cork drill, medium size fluorescent lamp for 3 hours.

After 3 glass, razor blade, electric scale, petri hours, take the leaves and place them dish or test tube, microscope, razor on the filter paper to reduce the water blade, tweezers, filter paper, object content, then weigh the leaves. Then glass, 10 mL pipette, glass object, the weighed leaf pieces are put in the glass deck.

Unit 1. The workings of this activity t y t y t y begin with dripping distilled water 0,0 0,0 0,0 0,0 0,0 0,0 on the surface of the object glass. Relative Turgidity TR stomata. Monocotyl : Impatiens balsamina b. Deficit Water WR. This is in accordance with the theory that the 4 NaCl 10 5 process of transpiration is the process of water loss due to evaporation Activity 3 through the inside of the body, i.

The Discussion factors of transpiration, among Transpiration has important others, the factors of in plants physiological activity is very number of leaves, broad leaves, and dynamic, serves as a regulatory the number of stomata , as well as mechanism and adaptation to internal factors from outside the body of a and external conditions, particularly plant such as, temperature, light, associated with the control of body humidity, and wind.

Transpiration in the epidermis of a plant organ of is the process of the loss of water in green bordered by special cells called the form of water vapor from plants the cell cover.

Cell cover surrounded most of the body occurs through by cells that the shape is the same or stomata, other than through the different from other epidermal cells cuticle and lentisel. Turgidity and Water Deficit of Based on practical work Plant Tissue which has been done, the incision Based on practical work has leaves of Mangifera indica and been done, before it is inserted into Impatiens balsamina, can be seen the the oven weight of wet leaves i.

Once it is a solution of sucrose 1 M long open inserted into the oven until dry stomata partially that is 5 minutes, results obtained i. Open the dried leaves being 0. So at a stomata close it depending on the time when the process of heating the change of guard cell turgor leaves undergo a reduction in the stomata. Stomata will will cause the stomata close. Therefore, opening and and cause the guard cells guard closing the stomata are dependent on mengkerut so the stomata close.

Malic acid is the most common cell where guards that bulging found in the normal state. Because bulging will push the wall of the the ion hydrogen obtained from inside of the stomata to docked. Later, the inner which causes the stomata close. The plants control the hydration of their cells, including the collection of potassium ion is derived from its water from the soil, its transport neighboring cells.

The light is very within the plant and its loss by stimulating role influx of potassium evaporation from the leaves. When potassium ions get negative, and in simple form is the algebraic sum of the hydrostatic into the guard cells, the same number pressure and the osmotic pressure of of hydrogen ions out.

Low CO2 water. Dasar-Dasar Fisiologi Tumbuhan. Vol No Vol 1 No 3. Forward osmosis, principles, application, and recent development Campbell, Neil A. Jakarta: Erlangga Campbell, Neil A. Biologi Edisi Kedelapan Jilid I. Jakarta: Erlangga Hidayati, Nuril. Vol 5. Regulation of Water in Plant Cells Tim penyusun penuntun fisiologi tumbuhan.

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Desalination is a separation process used to reduce the dissolved salt content of saline water to a usable level. All desalination processes involve three liquid streams: the saline feedwater brackish water or seawater , low-salinity product water, and very saline concentrate brine or reject water. The saline feedwater is drawn from oceanic or underground sources. It is separated by the desalination process into the two output streams: the low-salinity product water and very saline concentrate streams. The use of desalination overcomes the paradox faced by many coastal communities, that of having access to a practically inexhaustible supply of saline water but having no way to use it. Although some substances dissolved in water, such as calcium carbonate, can be removed by chemical treatment, other common constituents, like sodium chloride, require more technically sophisticated methods, collectively known as desalination.



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