Breeding field crops

By | 06.12.2018

Added to Your Shopping Cart. Padi Oryza sativa L. Quantitative Inheritance in Plant Breeding. Before the potential benefits from an improved variety can be realized, the variety must be distributed widely, and sufficient seed or vegetatively propagated materials must be produced so that the variety can be grown on the farms in the area in which it is adapted.

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Sorghum Sorghum bicolor L.

Breeding Field Crops, 5th Edition

Researchers have widely applied heat shock on zygote stadia of breedint aquatic animals especially for the purpose of ploidy manipulation in fish to accelerate growth, intermediate products for the production of infertile seeds, providing prospective brood stock as well as the monosex population. These processes—gene recombination, polyploidy, and mutation—are not new innovations.

The Genetic Basis of Plant Breeding. These and the possibilities of further improvement are discussed in this chapter.

Breeding field crops - John Milton Poehlman - Google Books

A hybrid variety differs from a variety produced by hybridization as described in Chapter 10 for self-pollinated crops. Progeni F1 tulen juga menunjukkan tahap pengekspresan Abp57 yang lebih tinggi berbanding induk Breedinf dan varieti liar. In this chapter we are concerned with the methods by which new varieties of self-pollinated crop plants originate. The rapid increase in acreage could not have been accomplished without the progress that was made during the same period in the breeding of highly productive, disease-resistant bbreeding, adapted for specific ecological areas and for the mechanization of production and harvest.

The pollen may be carried by the wind for large distances, with seeds borne on a single ear of corn arising by pollination with pollen grains originating from many different plants, so there is a constant ctops of different genes for particular xrops of the corn plant. Would you vreeding to change to the site? The distinction between qualitative and quantitative characters is not always clear, since expression of qualitative characters may sometimes be modified by the environment.

Heterosis for quantitative characters in 39 cucumber genotypes 19 parents and 20 F1 s were investigated at the farm of Department of Genetics and Plant Breeding in Bangabandhu Sheikh Mujibur Rahman Agricultural University during March-November, Nested design with three factors was used.

Analysis of variance revealed highly significant differences among the parents and hybrids for 19 characters studied. This research doesn't cite any other publications.

Barley Hordeum vulgare L. The domestication of plants was a signature technology initiated by humans during the transition from hunting—gathering to agriculture, about 12 years ago.

New genetic traits arise through mutation. Beverage quality of coffee is the most important for consumers. The sugar beet Beta vulgaris L.

Many improvements have been made in the cultivated varieties of barley by breeding. There would be differences in maturity, height, seed coat color, endosperm color, sugar content of the kernel, presence of plant pigments, disease resistance, and many more features. Sugar beets are grown in 13 states and breeding provinces in Canada. Thus methods used with cross-pollinated species will differ from those used in self-pollinated crops. Our acceleration of the evolutionary process, by plant breeding, has gained such momentum in recent years that through its success bteeding portends to obliterate the vestiges of many naturally evolving crop plant populations and to replace them with modern crop varieties.

With the hybrid variety, the F1 generation brefding grown and the hybrid genotype is reproduced faithfully in every plant if the parents are homozygous pure lines or inbred lines. Fertility in interspecific crosses is important crpos it will determine how extensively desirable genes from closely related species may be utilized in a recombination-breeding program.

This is an intensely researched area of science, from which new information is rapidly emerging. In this respect the plant breeder is no exception.

In its broadest sense, mutation may include the loss or duplication of entire chromosomes; these changes and their effects were discussed in Chapter 5 and so are not considered here. An inverse ratio between tonnage and sucrose percentage exists; as tonnage per hectare is increased, either from cultural methods or by breeding, the sucrose percentage tends to decline.

There are several reasons for the late start in forage breeding research in the United States. If we were to examine plants from a wide range of varieties of corn, we would expect to find even greater variations. Production of food is a problem of major concern in the world today.

2 thoughts on “Breeding field crops

  1. Kik

    Excuse, that I interrupt you, but you could not paint little bit more in detail.

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  2. Kagazshura

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