Business Technology Early College High School Fertilizer Lab Experiment AP Living Environment Mr. Acquaotta/Mr. Lee Purpose The purpose that this lab was conducted was because we wanted to see if seeds germinated faster if fertilizer was applied. Introduction Fertilizer we use it when we garden, we see companies promote it in various ways, but have you ever wondered if it made a difference in growth of plants? Does it really make flowers bloom more rapidly or vegetables grow larger and more productive? The answers to these questions are all within the realm of science because they are testable by controlled experiments, observations and data gathering.
Trichoderma biocontrol agents can promote plant growth and stimulate the plant defense mechanisms (Papavizas, 1985; Howell, 2003; Vinale et al., 2008). The mechanisms can be described as: 126.96.36.199) Competition Bio control agents and the pathogens compete with one another for the nutrients and space to get established in the environment. This process of competition is considered to be an indirect interaction between the pathogen and the bio control agent wherein the pathogens are excluded by the way of depletion of food base and via physical occupation of site (Lorito et al., 1994). The most common cause of death of microorganisms is
MICROPROPAGATION: PRINCIPLE The practice of propagation of a plant under ‘aseptic conditions’, for the production of its clones, is known as ‘micropropagation’. It is a technique which comes under plant tissue culture. This technique allows large number of plants to be produced from the explants in less time. Through micropropagation, various ‘difficult-to-root’ species can be effectively reproduced clonally; but the cost is high which has resulted in its prevention for a wider application in market . The following stages are involved during this process: • Stage 0 – Preparative/ Pre-initiation stage: Explant selection and sterilization takes place.
BIOTECHNOLOGY is the use of living systems and organisms to develop or make products, or "any technological application that uses biological systems, living organisms or derivatives thereof, to make or modify products or processes for specific use" (UN Convention on Biological Diversity, Art. 2). IMPORTANCE OF BIOTECHNOLOGY Application in modern era includes the field of genetic engineering. It is the usage of this technology to culture cells and tissues for the modification living organism for human purposes. By this, the importance of biotechnology in agriculture increases the crop production which makes it double or even higher than normal harvest.
Genetic engineering is manually changing the genetic structure of cells by adding a new DNA which has one or more new traits that aren’t existent in the particular organism. The aim of the genetic engineering would be to improve organisms. An example of a genetically engineered organism would be plants that can handle herbicides or crops with higher or lower oil content. Genetic engineering works by removing a gene from an organism and inserting it into another organism, making it capable to express the trait given from the gene. One specific gene is located and copied from thousands of genes, this is called gene cloning.
Result presented that among the treatments, application of 75 kg P ha-1 recorded significantly lower content of crude fibre (1.27%) and high content of protein (2.78%). The increase in protein might be due to increased supply of phosphorus and profuse nodulation leading to increased nitrogen fixation which in turn had positive effect on photosynthetic organs and rate. This is in agreement with the findings of Jain et.al (1999) in chick pea. Better growth, yield and quality of French bean might be due to the
1994) produced by soil microorganisms. It degrades cyclopropanoid amino ACC (the immediate precursor of the plant growth regulator ethylene) to form ammonia and α-ketobutyrate. After the first finding of ACC deaminase from Pseudomonas sp. strain ACP (Honma and Shimomura 1978), various pioneering research work conducted, such as in Jacobson et al. (1994), Glick (1995) and Penrose et al.
Tomato health management can b particularly changing due to resistant being overcome by new pathogen races and to introduction of new pathogens by global agriculture markets. The most important gene family involved in the recognition of pathogen examine in tomato has been the resistance genes (R-genes). Avirulent (Avr) pathogen recognition is done by R-genes and initiation of defence mechanism in the form of hypersensitive response (HR). Plant immune system can also respond to an infection through sensitization of their basal immune system that shares elements with the R-gene mediated response (Postel and Kemmerling 2009). PSEUDOMONAS SYRINGAE PV.TOMATO STRAINS AvrPto AND AvrPtoB: In tomato, the resistance against Pst which causes the bacterial
Cadmium resistant Pseudomonas sp. G1 worked as plant growth promoting bacterium that has stimulatory effects on root length of mustard seedling under cadmium stress than control. This strain has multiple plant growth properties in normal as well as cadmium contaminated environment. This strain also has co-resistance property with high MAR (multiple antibiotic resistant) value. This strain was isolated from soil of industrial area to assess its plant growth promotion and cadmium uptake in Brassica juncea.
What is GM food? GM stands for “genetically modified”. Genetically modified food is food that has been produced from organisms which had specific changes introduced into their DNA by making use of genetic engineering. This is done in order for the organism to perform better under harsher circumstances and to improve yield and resistance against pests. Genetic engineering can be used to introduce new traits and also have more control over the genetic structure of the food.