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Importance of rice in the world
Importance of rice in the world
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Rice is inevitably an important staple food crop supporting half of the world population. Rice cultivation has gained importance worldwide not only as a source of dietary constituents, but also play a major role in socio economic development, providing food security, poverty alleviation, employment, sustainable development and maintenance of cultural heritage etc., (Nguyen and Ferrero, 2006). It is also a favorable model crop plant among cereals for genetic improvement studies and functional genomics due to its small genome size and availability of full genome sequence. The main concern over rice cultivation is the increasing demand over supply while there is remarkable depletion in cultivable land area. Many challenges lie ahead of cultivars to achieve the required target/need in coming years and rice diseases are among one of the major challenges.
Rice plants are frequently under attack from various insects, pest and pathogens. Most of the elite rice cultivars and varieties with favorable taste and yield such as Basmati, Sambha Mashuri, Swarna, other aromatic rice etc. are very much prone to diseases. Bacterial blight (BB) is one of the major diseases of rice affecting as much as 20-50% yield loss in severe cases (Reddy 1989; Mew 1993; Adhikari et al. 1994). Xanthomonas oryzae pv. oryzae (Xoo) causes bacterial leaf blight disease in rice. It is a vascular disease resulting in systemic infection. To control the disease, use of chemical pesticides, biological control agents and host mediated resistance have been widely adopted. However, spraying pesticides have tremendous long term ill effects to environment and consumers. In order to provide durable, economical and sustainable disease resistance to plants, host ...
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... from different Asian countries (Gu et al. 2004). This gene was first identified in Oryza minuta and mapped on chromosome 6 of rice. xa5 confer race specific resistance against Phillipines Xoo race 1 (PXO86). The xa5 gene is a mutant form of rice transcription factor OsTFIIAγ5 (Xa5) where there was a substitution variant of single amino acid V39E (Iyer et al. 2004).
Our analysis which was conducted in wild species and domesticated rice may help in understanding the natural selection and evolution of the important BB resistance genes to sustain under ever evolving pathogen constraint. Studying the pattern and structure of genetic variation of BB R genes will help us in understanding the evolutionary history of these genes. It will also help in identifying good resistance source which may be further utilized for developing disease resistance varieties.
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...
Since the birth of agriculture farmers across the world have been altering the genetic makeup of the crops they grow. Ancient farmers chose only the best looking plants and
One of the most prominent crops in the GMO industry is Bt corn. The Bt pesticide stands for Bacillus Thuringiensis. Scientists transferred the Bt gene into the corn to create a crop that produces its own pesticides. As the corn matures, it grows stronger poi...
...cardi, Lewellen et al. 2002). This resistance was recognized as monogenic and dominant as hybrids produced segregated in a pattern typical of a single dominant gene, Rz1. (Rz2) was identified in a sea beet population coded WB42 (Scholten and Lange 2000).
The 1920’s were the singularly most influential years of farming in our country. The loss of farms following the war, and new agricultural practices resulted in the dawn of modern agriculture in our country. The shift from small family to big corporation during this time is now the basis for how our society deals with food today. Traditional farming in the 1920’s underwent a series of massive transitions following WWI as the number of farms decreased and the size of farms increased.
Several potato plants carry resistance genes against PVX. Up to date two resistance genes have been identified. One gene product mediates salicylic acid systemic defense responses, whereas the other encodes the Rx protein. This protein has a nucleotide binding-site (NBS) and a leucine-rich repeat (LRR). The native fold of Rx confers an inactive conformation. Upon interactions with the viral CP, Rx partially unfolds, thereby its NBS-LRR domain [27]. This activates the signaling cascade mediating virus resistance.
Throughout the history of the human race there have been a great number of crops that were discovered, planted, and over time domesticated. Wheat in the Middle East, rice in Asia, and rye in Eastern Europe are all some of today’s staple crops that feed millions every day. Crops like these make up over 50% of the world’s total food supply. However, the third most eaten crop in the world is maize, or corn, which provides 21% of human nutrition. Today maize feeds millions across the world, but its history is different from the others.
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).
In Genesis 1:29, God said, “I give you every seed-bearing plant on the face of the whole earth and every tree that has fruit with seed in it. They will be yours for food.” From the beginning God has given us food for life. Plants, meats, trees, and fruits are offered to us as a means of sustenance from the very same God who made them long ago.
The growth of the world’s population has led to a growth in animal agriculture, because as population grows, the need for food does as well. Animal agriculture is the use of animal farms to produce animal products that are then consumed by the general public. As agribusiness expands, issues such as the need for farm insurance and animal rights have received more awareness. Modern day industrialism is being applied to animal agriculture in developed nations such as the United States and Canada. Farm Foundation, a nonprofit organization focused on research in agribusiness and improving the economy through agriculture, claims that “the North American livestock industry is expected to
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 soil was severely damaged from monoculture (The cultivation of a single crop in a defined area).... ... middle of paper ... ...
To understand why is agriculture important in the world of today, then first of all we must know what agriculture is? Agriculture is the basic material production of society, the use of land for agriculture and livestock, mining plants and animals as raw materials and labor to produce mainly food and some raw materials for industry. Agriculture is a major industry, covering many disciplines: planting, breeding and processing of agricultural products; in the broadest sense, also including forestry and fisheries. Agriculture is an important economic sector in the economy of many countries, especially in the past century , when the industry has not yet developed. Since the dawn of history, agriculture has been one of the importance means of producing
Would you enjoy having fresh, delicious, luscious vegetables to eat all summer long that cost you almost nothing? I know I would. Well, now you can have your veggies and eat them too. Try building your own vegetable garden. It can fit all sizes of yards and decks. You just need to pick the location and type of garden. Next, you will prepare the garden site and work the soil. Finally, you will plan the specifics and plant your garden. With some care and patience, you will be enjoying the fruits of your labor in no time.
Biotechnology helps in protecting the environment,It provides crops with protection from viruses and insects by reducing the number of pesticid...
Due to rural-urban migration, there has been increasing levels of poverty and depopulation in rural areas. This is one of the reasons why the government has seen it as necessary and made it a priority to improve the lives of the people who live in rural areas. Rural development is about enabling people in the rural areas take charge of their destiny. This is through the use and management of the natural resources they are exposed to. This is a process through which people learn over time and they use this knowledge to adapt to the changing world. The purpose of rural development is to improve the lives of people living in the rural areas.