Pedigree selection is a breeding technique in which the breeder maintains the records of an ancestry of the cultivar which are called as Pedigree records.
What is pedigree selection in animal breeding?
In selection. …and quality is known as pedigree selection. Progeny selection indicates choice of breeding stock on the basis of the performance or testing of their offspring or descendants. Family selection refers to mating of organisms from the same ancestral stock that are not directly related to each other.
What do you mean by pedigree selection?
Pedigree selection is a breeding method in which the breeder keeps records of the ancestry of the cultivar. The base population, of necessity, is established by crossing selected parents, followed by handling an actively segregating population.
What is the process of pedigree?
In pedigree method individual plants are selected from F2 and their progenies are tested in subsequent generations. A record of the entire parent off spring relationship is maintained and known as pedigree record.
What are the important uses of pedigree selection?
Pedigree selection can be made more useful by giving all information good and bad about ancestors, including the collateral relatives. Pedigree selection is particularly useful for initial selection for traits that are expressed in only one sex. Such selections can be made early and inexpensively.
What is basis of selection?
The amount of genetic improvement gained depends on four factors: (1) heritability of the trait, (2) amount of selection pressure, (3) genetic association of selected traits, and (4) generation interval. Differences between animals result from genetic and envi- ronmental causes.
How do you maintain a pedigree?
In keeping a pedigree record, the following should be kept in mind.
- Only important characteristics should be recorded. If a large number of characters are noted, the record keeping would become a great burden.
- Only promising progenies should be included in the record. …
- The pedigree record must be accurate.
Who gave progeny test?
The idea of progeny testing is not new, Robert Bakewell is reported to have used progeny testing in eighteenth century by letting out bulls and rams on annual basis. Then he could later use those which proved to be outstanding transmitters.
What is combined selection?
Combined selection is a technique used to identify individuals with better additive genetic value in a population under selection, using information from the individual itself and its relatives. … However, this can be overcome by defining a maximum number of individuals to be selected in the same family (Morais, 1992).