plant breeding

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plant breeding

the science that aims to improve the quality and yield of plants by the genetic engineering of varieties. The main tool of the plant breeder is SELECTION, by which it is possible to alter the genetic constitution of a plant type, provided that genetic variability is present in the original strains. Another method of improvement is the crossing together of inbred lines to produce HETEROSIS in the hybrids (see GREEN REVOLUTION). Plant breeding has lead to a great improvement in crop yield, better harvesting (e.g. with dwarf varieties) and improvements in the natural resistance of plants to pathogens. Recently, cell and tissue cultures using EXPLANTS have begun to be used by plant breeders, to produce
  1. (a) multiple copies (CLONES) of sterile types;
  2. (b) the development of forms with new chromosome combinations;
  3. (c) HAPLOIDS (2) which can be induced to become fertile DIPLOIDS (2) (the latter forming PURE BREEDING LINES).
References in periodicals archive ?
Conventional agricultural plant improvement to increase crop yields involves selecting and interbreeding of parent varieties based on extensive past improvement data, assessing progeny over the long term, as well as selecting new progeny with the desired property.
It was most interesting to read the author's projections of future progress in plant improvement and the expected social changes with the current distribution of labor among the public and private sector institutions involved in this endeavor.
The Power Plant Improvement Initiative is targeted at advanced clean-coal technologies.
The $250,000 plant improvement project, announced last week by plant superintendent Jack Peluse, involves installation of the new equipment in stages.
a trait delivery innovation company, have signed a collaborative agreement for the development of a revolutionary seed treatment technology for plant improvement.
Pearce said that the company accomplished its major plant improvement projects during the quarter and expects these initiatives to lead to further reductions in production costs.
This project is sponsored by the Department of Energy's (DOE) Power Plant Improvement Initiative with a goal of demonstrating a multi-pollutant control system to reduce emissions from smaller coal-fired plants for less money than it costs to control NOx and SO2 separately.
Proficy Historian is utilized to manage the overwhelming amount of historical data that is used for compliance reporting as well as for on-going plant improvement projects.
Contract awarded for Public sewage treatment plant improvement project gwangeup materials (thickener cover) making purchase installation
Tenders are invited for work includes approx 200 lf of 2" water well fill waterline including all valves, excavation, trench safety, backfill and appurtenances; 210 lf of water well site security fence and gate; 1 ls water plant improvements (1) 100,000-gallon gst; (1) 250 gpm booster pump; (1) water well; and miscellaneous water plant piping, electrical controls, fencing, and site work.
The company is planning an improvement programme using AltaRock Energy's multi-zone stimulation process combined with wellfield and power plant improvements to increase the project's power output.
4 billion in US plant improvements during the next three years, including details of USD 783.