Written in EnglishRead online
|Statement||W.R. Fehr, editor.|
|Series||CSSA special publication ;, no. 7|
|Contributions||Fehr, W. R. 1939-|
|LC Classifications||SB185.7 .G46 1984|
|The Physical Object|
|Pagination||viii, 101 p. :|
|Number of Pages||101|
|LC Control Number||83073737|
Download Genetic contributions to yield gains of five major crop plants
About this book Many factors interact to influence the yield of a crop. The list includes weather, soil, agronomic practices, and choice of cultivar. Some of the factors can be modified and some cannot.
: Genetic Contributions to Yield Gains of Five Major Crop Plants (C S S A SPECIAL PUBLICATION) (): Fehr, Walter R.: Books. A symposium on the subject, entitled "Genetic Contributions to Yield Gains of Five Major Crop Plants in the United States," was presented at the annual meeting of the American Society of Agronomy.
Outlining successful breeding techniques to augment the yields of the world's major crops, this reference analyzes the physiological and genetic basis for past and potential future increases in crop yields.;Covering crops with wide differences in morphology, photosynthetic rates, and nitrogen metabolisms, Genetic Improvement of Field Crops: investigates the changes produced by breeders.
In the Crop Science Society of America (CSSA) published the proceed- ings of a symposium as Genetic Contributions to Yield Gains of Five Major Crop Plants. These crops were corn, cotton, potato, sorghum, and wheat. Schmidt, J. Genetic contributions to yield gains in wheat.
In Genetic Contributions to Yield Gains of Five Major Crop Plants, pp. 89– Crop Science. Frederick R. Miller, Yilma Kebede, Genetic Contributions to Yield Gains in Sorghum, toGenetic Contributions to Yield Gains of Five Major Crop Plants. Part of theAgronomy and Crop Sciences Commons This Book is brought to you for free and open access by the Agronomy at Iowa State University Digital Repository.
Genetic Contributions to Yield Gains of Five Major Crop Plants. CSSA Special Pu bl. 7, W. Fehr, Ed. Fig.p. Fig.p. Fig.p. Hybridization. Miller FR, Kebede Y () Genetic contributions to yield gains in sorghum, to In WR Fehr, ed, Genetic Contributions to Yield in Five Major Crop Plants.
Crop Science Society of America Special Publication 7. Crop Science Society of America, Madison, WI, pp 1–14 ↵. In W.R. Fehr (ed.) Genetic Contribution to Yield Gains of Five Major Crop Plants. CSSA Special Publication No. American Society of Agronomy.
Madison, Wisc. Yield Increase Plant breeding is vital to increase the genetic yield potential of all crops. Yields of major crops, for example, Chinese cereal production has increased steadily from Mt in to Mt in Genetic contributions to yield gains of U.S. hybrid maize, to In Genetic Contributions to Yield Gains of Five Major Crop Plants.
Fehr, ed., Crop Sci. Soc. Amer. Special Publication No. 7, Madison, WI (In press). Eberhart, S. A., and W. Russell. Yield and stability for a line diallel of single-cross and double-cross.
From toU.S. sorghum [Sorghum bicolor (L.) Moench] grain yield Genetic contributions to yield gains of five major crop plants book been increasing at an annual rate of 7% /m yield increased at 11 % from to4% from toand 2% from to The discovery of cytoplasmic‐genetic male sterility, incorporation of new germplasm (Sorghum Conversion Program), selection for disease and insect resistance as well as.
Get this from a library. Genetic contributions to yield gains of five major crop plants: proceedings of a symposium sponsored by Division C-1 of the Crop Science Society of America, 2 Decemberin Atlanta, Georgia. [W R Fehr;]. Genetic contributions to yield gains in wheat.
In: W.R. Fehr (Ed.), Genetic Contributions to Yield Gains of Five Major Crop Plants. CSSA Special Publ. 7, pp. 89– A second estimate of genetic gain from tobased on sets of single cross diallels, is 73 kg ha −1 year −1, or 71 % of the total yield gain. The genetic yield gains in the commercial hybrids were accompanied by large and consistent improvements in resistance to root lodging, stalk lodging, premature plant death, and barrenness.
Schmidt, John W.,Genetic contributions to yield gains in wheat, in “Genetic Contributions to Yield Gains of Five Major Crop Plants,” W. Fehr, ed., Crop Science Society of America Special Publication No. 7, Madison, Wisconsin.
Genetic variation in major crops has been successfully unlocked, shuffled, recombined, and sometimes created, by plant breeders over the last century to achieve yield increase. Plant breeding together with better agronomic practices resulted in the Green Revolution in the s with dramatic yield gains, particularly for wheat and rice in.
Genetic diversity in place is a type of spatial diversity, where farmers plant several kinds of crops or several varieties of a crop to insure some of them would survive poor weather or pests. In general, farmers still practice the use of genetic diversity in place by planting different cultivars of the same crop in the same field with the hope.
the yield growth in corn, 85 percent for soybeans, 24 percent for cotton, and 75 percent for wheat. Fehr (, in Fuglie et al.,p. 44) estimates that genetic improvements accounted for 89 percent of the Improved Seed Is a Major Contributor to Crop Yield Gains and Agricultural Productivity Figure 4 Yields for major crops.
Table I summarizes yield gain data for several regions of the world during the period – Globally, maize yields doubled during this time, from to mg ha −1, a linear increase of 61 kg ha −1 year −ent regions varied in the size of annual gain, as well as in average yields at the beginning and the end of the interval, but all showed positive and significant gains.
Start studying Crop Production Chapter 9 Study Questions. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Half of the yield gains in cereal crops is due to genetic improvement.
T/F. True. The total genetic makeup of a plant is known as its. genotype. The placing of plants and animals in a disturbed environment provided the selective pressure required to produce new forms, well differentiated from the wild stock.
This was named automatic selection by Harlan () who described the conditions for its existence in crop plants. Journal description. Genetic Resources and Crop Evolution is devoted to all aspects of plant genetic resources research.
It publishes original articles in the fields of taxonomical morphological. particularly in the field of genetic crop improvement.1 For decades, the industry has been mixing naturally the genetic traits of seeds in the search for particularly robust varieties.
Genetically-modified (GM) seeds are a significant step forward in the production of agricultural crops. GM seeds are seeds that have been modified to contain. A single focus on yield in agroecosystems comes at the expense of other ecosystem services, for instance, biocontrol of pests.
In this study, we inves. New and Future Initiatives in Crop Genetic Engineering. To date, commercial GM crops have delivered benefits in crop production, but there are also a number of products in the pipeline that will make more direct contributions to food quality, environmental benefits, pharmaceutical production, and nonfood crops.
Repeated studies for each of four major crops have shown that about 50 percent of yield gains in the United States over the past 30 to 50 years were due to varietal improvement (Fehr, ). The rate of yield gains as a result of genetic improvement has been estimated at about 1 percent per year for each crops and has been greater for wheat (2.
Genetic contributions to yield gains of U.S. hybrid maize, top. In: W.R. Fehr (ed.). Genetic contributions to yield gains of five major crop plants. Duvick DN () Genetic contribution to yield gains of U.S. hybrid maize, to In: Fehr RW (ed) Genetic contributions to yield gains of five major crop plants.
Spec Publ 7 Crop Sci Soc Am Madison, Wis., pp 15– Google Scholar Falconer DS () Introduction to quantitative genetics, 3rd edn. Longman, London. “With GMOs, we introduce a foreign material into the plant,” says Adrian Percy, global head of research and development for Bayer Crop Science.
“With gene editing, we make changes to the existing genome, rather than with foreign genetic material.” Gene editing may be a more palatable technology for consumers.
Carpenter said a review of global farming surveys from 12 developing nations showed strong yield gains for farmers using GMO crops: The average yield improvements for developing countries range from 16% for insect-resistant corn to 30% for insect-resistant cotton, with an 85% yield increase observed in a single study on herbicide-tolerant corn.
New and future initiatives in crop genetic engineering. To date, commercial GM crops have delivered benefits in crop production, but there are also a number of products in the pipeline which will make more direct contributions to food quality, environmental benefits, pharmaceutical production, and non-food crops.
Chickpea: Crop Wild Relatives for Enhancing Genetic Gains explores aspects related to critical analysis on factors responsible for narrow genetic base of chickpea productions including domestication bottleneck, the level of diversity present in different cultivated and wild species, the uniqueness and usefulness of potential gene sources.
Both plant growth factors interact in various ways. It is well established that the genetic factor cannot cause a plant character to develop to its maximum potential without a favorable environment. A crop variety may possess the genetic constitution which provides the blueprint for the plant to produce high yield.
Genes for better yield. The only GM crop designed for higher yield that has received commercial approval is a GM eucalyptus developed in Brazil, which was approved in A gene from the model plant Arabipdopsis thaliana was inserted into the eucalyptus, which produced 20 percent more wood and reduced the time to maturity from 7 to years.
Genetically modified (GM) plants designed to use light more efficiently produced a 20% greater yield in a study that could have significant implications for global food supplies. Genetic contribution to yield gains of U.S.
hybrid maize, to p. In W.R. Fehr (ed.) Genetic contributions to yield gains of five major crop plants.
CSSA, Madison, WI. But, after two years of field trials, my colleagues and I have demonstrated that increasing H-protein levels leads to larger plants, boosting the crop yield by percent. Biodiversity is not evenly distributed, rather it varies greatly across the globe as well as within regions.
Among other factors, the diversity of all living things depends on temperature, precipitation, altitude, soils, geography and the presence of other study of the spatial distribution of organisms, species and ecosystems, is the science of biogeography.
Considering the vast knowledge gained in crop physiology, breeding and biotechnology, a framework integrating these complementary disciplines could be important to achieve steeper gains in plant breeding. In this context, this chapter focuses on the contribution of crop physiology to plant breeding and biotechnology.Biotechnology is a broad area of biology, involving the use of living systems and organisms to develop or make ing on the tools and applications, it often overlaps with related scientific fields.
In the late 20th and early 21st centuries, biotechnology has expanded to include new and diverse sciences, such as genomics, recombinant gene techniques, applied immunology, and.Genetic gain within PS and GS was also compared based on the level of genetic correlation between PYT and AYT and there were five level of genetic correlations (,and ).
According to the level of genetic correlations between traits there were a difference in mean breeding value with-in each selection criteria (PS and GS).