In the 30 kr set-up, 18 out of 20 seeds germinated with a germination rate of 90 percent. Furthermore, the concentration of chlorophyll a was higher than chlorophyll b in both irradiated and non-irradiated seedlings. These radicals can damage or modify important components of plant cells and affect certain physiological and biochemical processes that might be vital for organism survival.
The study involves subjecting certain number of the model organism, the corn Zea mays L. The plant average height in every set- ups was measured using a meter stick or ruler by the assigned person in each day. This means that using ionizing energy with even low dosage in experiments will still ensure the formation of free radicals in the irradiated cells.
The action of a low-energy electron and the later consequences are also the same, chemical action or fluorescence, and heat production Purdom, Radiation has been widespread and humans have created artificial sources of radiation which contribute to radiation exposure.
Our results show that the germination potential, expressed through the final germination percentage and the germination index, as well as the physiological parameters of maize seedlings root and shoot lengths decreased by increasing the irradiation dose.
Also, low levels of gamma radiation can improve capability of seeds to germinate. Thus, the higher the level of gamma radiation, the shorter the plants will become. ESR measurement Gamma-irradiated maize seed samples were placed in ESR quartz tubes in order to register paramagnetic species.
The doses of exposure were 0. Shooting and rooting were defined as the protrusion of the shoot and root to the extent of at least 0. Mutations range in extent from a single nucleotide to a large segment of a chromosome Campbell, Mutagenesis, the creation of mutation, can occur in various ways.
This could lead to cancer, or to the death of the cell. Gamma rays have proved to be more economical and effective compared to other ionizing radiations because of their easy availability and power of penetration [ 1 ].
This explains the likelihood of mutation upon irradiating a cell or an organism with ionizing energy. Average height cm of Zea mays L. The 30 krad set-up has a survival rate of 40 percent. The amount of damage in the cell is related to the dose of radiation it receives.
Mutations are permanent changes in the genetic material. Such chromosome fragments remain outside of the nuclei and their genes are lost to further progeny of the original, irradiated mother cell.
In each set-up, ten Zea mays L. Ten seeds for each level of gamma radiation 0 krad, 10 krad, 30 krad and 50 krad were planted and tested for the number of germinating seeds and plant height, using a meter stick or ruler. As shown in Figure 2, the control set-up has a survival rate of 90 percent.
The ionized water molecule H2O and the radicals H and OH are produced due to the primary reactions of excitation and ionization. Electromagnetic radiation consists of electric and magnetic waves while the ionizing radiation consists of X-rays and gamma-rays which are energetic enough to produce reactive ions that react with biological molecules Al-Salhi et al.
However, high levels of gamma radiation had an adverse effect on seed germination. We will write a custom essay sample on Effects of Radiation on Corn or any similar topic specifically for you Do Not Waste HIRE WRITER Therefore, it can be inferred that the level of gamma radiation introduced to the plant would have adverse effect on the growth of corn plant; in terms of plant height, number of germinating seeds and its over-all survival rate.
Furthermore, we used ESR spectroscopy to study the behavior of a radiation-induced free radical in gamma-irradiated maize seeds and to correlate it with the germination pattern. Considering the effects of radiation on plants, the present study was conducted to determine the effects of radiation on maize growth and development and on the content of photosynthetic pigments.
The exposure of a biological system to ionizing radiation activates a number of physical and chemical steps between the initial absorption of energy and the final biological injury. The effects of a collision between a gamma- or X-ray photon and an atomic particle are various and depend on the energy of the photon Purdom, In the 10 kr set-up, 20 out of 20 seeds germinated with a germination rate of percent.
In the 50 kr set-up, 0 out of 10 planted seeds germinated with a germination rate of 0 percent. In biological tissues, these ionizations are induced all along the radiation path, leading to chain reactions that produce secondary free radicals as a result of H and e becoming trapped [ 2 ].
Photons of electromagnetic radiation are oscillating pulses of energy, without electric charge, and therefore they continue along a straight line in their passage between atoms of a material. The data were recorded and compiled. Percent Germination of Corn Plants.
There are two major types of radiation—EM spectrum and ionizing radiation. For thirty days, the corn plants were observed every Monday, Wednesday and Friday. Statistical analysis was performed using GraphPad Prism version 5. Materials and methods Plant material Seeds of maize hybrid Turda Star were obtained from the Agricultural Research and Developmental Station, Turda, Romania, and were submitted to gamma treatment.Effect of Gamma Irradiation on Survival of Natural Microflora corn, and oat meals with initial microbial contaminations of survived in corn meal after this dose.
The dose of 10 kGy did not cause any about colony-forming units were found only in the wheat meal samples treated with this dose. Their growth in the untreated samples was. The effects of irradiation with low doses (0, 10, 20 and 30 Gy) of radioactive cobalt (60Co) γ rays on seed germination, shoot and epicotyl growth of hard wheat (Triticum durumDesf.) were.
Full-Text Paper (PDF): UV Irradiation Effects on Seed Germination and Growth, Protein Content, Peroxidase and Protease Activity in Red Bean. The effects of temperature and concentration of corn flour on the sample irradiated with the highest irradiation dose ( kGy) were also investigated.
Suspensions with mass concentrations of 10%, 20%, and 30% were prepared using the corn flour irradiated at kGy and the variations in pasting viscosity (at 90 °C) were studied.
at increasing dosages of 2, 4, 6, or 10 kGy. All the pigs were fed a common diet from d 14 to Irradiation of the plasma reduced the total bacterial and coliform counts at every dose, regardless of irradiation source.
There were no interactions (P>) between irradia-tion source and dosage for the entire trial. THE EFFECTS OF ELECTRON BEAM AND GAMMA RAY IRRADIATION LEVELS IN SPRAY-DRIED ANIMAL PLASMA ON NURSERY PIG PERFORMANCE1 trasts were used to determine the effects of increasing irradiation dosage level.
Contrasts of irradiation dose or source on growth per-formance. From d 14 to 28, pigs fed diets .Download