Many developing and developed countries are concerned about the adaptation of crops towards various abiotic stress conditions in food production industry. Considering the crop improvement and food production, they are highly influenced anticipated variations in temperatures and rainfall. This review deals with the following aspects of agricultural biotechnology: (1) the role of two key biotechnology approaches namely, molecular breeding and genetic engineering in crop development; (2) explains the integration of these two modern technologies with the conventional breeding technique, which makes crops more tolerant to abiotic stresses and (3) Potential constraints for crop production that need to be override to meet the demands of a projected world population of nearly nine billion people by 2050.
Key words – Molecular Breeding, Drought, Stress, Genetic Engineering, Crop production
INTRODUCTION
The intensified research conducted in agriculture by various countries for the past five decades showed an increase in global food grain production from 850 million tons to 2350 million tons (from 1960 to 2007 respectively) (Godfray, H.C.J, et al, 2010). Though the global food products predicts the future demands and try to pace it with the population growth, there is always a proportion of almost a billion people who are undernourished in most of the developing countries (Hazell. P, et. al, 2008). The projected data suggested that there should be an increase in global food production by 70 % to meet the demands by 2050. Due to heavy competition in claiming for lands, water, labors, energy and capital; food insecurity is developed in most of the countries, leading to develop more pressure on crop production on the single unit of land, whi...
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...its all conventional or molecular plant breeding efforts. Even the public research institutes in developing countries lack the appropriate and large scale phenotyping facilities. (iv) The use of relevant MB method is needed more than using MABC to achieve higher genetic gain for complex traits. (v) Knowledge about the specific promoters is necessary for gene stacking in genetic engineering approaches. This is when the interdisciplinary approaches are required to combat the abiotic stresses. Also, the following two approaches should be considered by the scientific community as well as science policymakers. (a) Selecting the specific set of genes or QTLs for genetic engineering or Molecular breeding approaches and (b) Emphasizing on the large-scale phenotyping will be based on the knowledge about both drought and heat tolerance either individually or in combination.
Modern biotechnology was born at the hands of American scientists Herb Boyer and Stain Cohen, when they developed “recombinant deoxyribonucleotide, (rDNA), [1] for medicinal purposes. Subsequently, biotechnologists started genetically engineering agricultural plants using this technology. A single gene responsible for a certain trait, from one organism (usually a bacterium) is selected altered and then ‘spliced” into the DNA of a plant to create an agricultural crop consisting of that...
Any organism that is genetically modified can be defined as a transgenic organism. The two main benefits of transgenic plants are that they can help increase yields without having to select against bad plants, and they can be resistant to toxins. In order to create a transgenic plant DNA ...
By exploring the past and its threats to human populations, the global modern mythology of sustainable agriculture can begin to be narrowed down as to the how and why rural communities may or may not have benefited from agricultural sustainability. By describing the dynamic analysis in the livelihoods of developing countries, the historical changes that had occurred in rural communities, can be understood. Halberg and Müller stated that globally “The world’s population was about 7 billion in 2010 and is expected to grow much more. The expected growth is highest in parts of the world that are vulnerable to hunger and adverse climate condit...
By implementing new farming techniques provided with the new technological advances in machines we can see abundant harvest in even the poorest third world countries. For example, the Green Revolution has already showed admirable progress in the northern part of India ever since it took start in 1950. By 1997, northern India increased its grain production by 37 percent. This has proven that traditional farming methods are being rendered obsolete. And because by the year 2000, there will be half the land per person in developing countries as there was in 1970, we need to apply ultra-efficient methods to sustain the growing need. Not only does the Green Revolution enhances food output, it also preserves the environment.
Genetic engineering has the potential to solve many problems and help develop sustainable agriculture. Genetic engineering is as natural as any other process on earth, and mastering it would only benefit the world (Coker 1). Putting together ideas promoted by organic farmers and the help of safe genetic engineering will be the future of crop diversity. The debate over labeling GMOs or banning them should be pushed aside because it is simply a waste of breath. To sum it up, the “evil GMOs” have created longer lasting, more nutritious food that is cheaper and easier to distribute.
The term GM foods or GMO (genetically-modified organisms) is most commonly used to refer to crop plants created for human or animal consumption using the latest molecular biology techniques (Whitman, 2000). These plants have been modified in the laboratory to offer desired traits such as increased resistance to herbicides or improved nutritional content. Also, genetic engineering techniques have been applied to create plants with the exact desired trait very rapidly and accurately. For example, this is done by the geneticist isolating the gene responsible for drought tolerance and inserts it into another plant. The new genetically-modified plant will now have gained drought tolerance as well.
Food production has many challenges to address: CO2 emissions, which are projected to increase by two-thirds in the next 20 years, as the global food production increases so does the number of people going hungry, with the number of urban hungry soaring. The environmental issues are not the only ones to face; politics and economic globalization take also the big part in the food world. These days agriculture and food politics has been going through many changes but mostly under the influence of its consumers; back in the days people wanted as little as safety, variety and low costs of food. Now consumers demanding way more – greater freshness, nutritional value, less synthetic chemicals, smaller carbon footprint and less harm to animals. And that’s the time when urban agriculture emerged quite rapidly delivering locally grown and healthy food. Within the political arena, there are a few still in charge of defending the conventional food industries and commercial farms to retain the upper level. Against the hopes of nutrition activists, farm animal welfare defenders, and organic food promoters, the food and agriculture sector is moving towards greater consolidation and better sustainability. Although in social and local terms, food-growing activists know their role is under attack. Caught two words in the middle, is it possible to satisfy both?
There are many problems confronting our global food system. One of them is that the food is not distributed fairly or evenly in the world. According “The Last Bite Is The World’s Food System Collapsing?” by Bee Wilson, “we are producing more food—more grain, more meat, more fruits and vegetables—than ever before, more cheaply than ever before” (Wilson, 2008). Here we are, producing more and more affordable food. However, the World Bank recently announced that thirty-three countries are still famine and hungers as the food price are climbing. Wilson stated, “despite the current food crisis, last year’s worldwide grain harvest was colossal, five per cent above the previous year’s” (Wilson, 2008). This statement support that the food is not distributed evenly. The food production actually increased but people are still in hunger and malnutrition. If the food were evenly distributed, this famine problem would’ve been not a problem. Wilson added, “the food economy has created a system in w...
According to scientists, genetically engineering crops contributes to their quality. Crops that have been genetically modified to have a particular trait can decrease the amount of herbicides needed for growing that crop. Additionally, genetically modified (GM) crops can help third world countries, where malnutrition is common. For example, to help diminish nutrient deficiencies in developing countries, “plans were underway to develop a golden rice that also has increased iron content”(Whitman 2). In addition, GM crops can be modified to be able to “withstand the environmental challenges of drought, disease, and insect infestation” (Swenson 1). Growing GM crops can also result in fruits and vegetables that stay fresh for a prolonged period of time and taste better.
Lemaux, P.G. (2006). Introduction to genetic modification. Agricultural Biotechnology in California Series, 8178. Retrieved from http://ucanr.org/freepubs/docs/8178.pdf
We live in a world that is constantly changing and advancing thanks to technological advancements, especially in the field of molecular genetics. Today, we are discovering and implementing new ways to overcome the ill-fated symptoms developed as a result from poor health or accidents. We are also making advancements in the field of agriculture thanks to molecular genetics. As we all know, food is an essential entity in our lives and is abundant as well as relatively easy to obtain here in the United States. However, as good as it may sound, this is not necessarily true for developing countries. Many people in developing countries receive very little food, if any, due to its scarcity. It is estimated that in Asia alone, close to 800 million people go to bed hungry every night due to food shortage. This problem can be alleviated by turning to the production of genetically modified organisms (a.k.a. GMOs).
Genetic engineering enhances plant resistance to drought, salinity, disease, pests and herbicides. The aim is to try and enhance the growth, productivity, nutrient value, and chemical composition of the plants. Chemicals are constantly being developed or improved to enhance the competitiveness and adaptability of crops, and to kill the parasites and weeds which plague the agricultural sector. . This however is not always good as the plant and the pests then become resistant to these new chemicals defeating the purpose of it being used. The new chemicals which are produced to kill these strong pests and weeds may be more harmful to other plants and remove nutrients within the soil in turn reducing the yield of agricultural crops. The benefits of these characteristics are seen in Argentina according to Pelletier (2010) as they use glyphosphate resistant soybean which allowed the comeback of this crop, as the so...
The global population in the year 2050 is expected to be nine billion and the agricultural demand is expected to double. With the current population already over seven billion people, there are hunger issues all around the world (“New” par. 1). How are we going to deal with food shortages in the future? With less land to work with, strains on the soils, and the lack of water, it is getting harder for the farmers of the world to support our growing population. These complications are making it harder for farmers to produce quality, affordable food. To help the crops grow better, farmers use fertilizers and chemical sprays to enhance growth and control the weeds. Farming in the United States is a relevant business because it supplies people with food, provides people with jobs maintaining the used equipment with the new equipment being much more expensive, and it provides research for more efficient ways on how to feed the world.
One of the most complex issues in the world today concerns human population. The number of people living off the earth’s resources and stressing its ecosystem has doubled in just forty years. In 1960 there were 3 billion of us; today there are 6 billion. We have no idea what maximum number of people the earth will support. Therefore, the very first question that comes into people’s mind is that are there enough food for all of us in the future? There is no answer for that. Food shortage has become a serious problem among many countries around the world. There are many different reasons why people are starving all over the world. The lack of economic justice and water shortages are just merely two examples out of them all.
There are those that believe our planet has reached its maximum capacity to sustain humanity and we need to reduce our population to rectify it. It is also said that our planet is well capable of providing both the nutrition and caloric needs for humanity, both now and into the future as well. Regardless of where one’s opinion of the facts fall between these two arguments, global food security is not where it should be. Uneven development could be argued to be a cause of this. But it is not the only issue affecting the planet.