What is pedigree selection method?
In pedigree method individual plants are selected from F2 and their progenies are tested in subsequent generations. … So each progeny inevery generation can be traced back to the F2 plant from which it isoriginated. This method used for selection from segregating population of crosses in self pollinated crops.
What are the steps of pedigree method?
Crossing between selected parent plants is the first step in pedigree method. Seeds obtained by hybridization (F1 seeds) are planted with proper sowing distance. Seeds of about 20-30 plants are harvested in bulk and forwarded to grow F2 generation. Selection is the main process carried in this step.
What are the benefits of pedigree selection?
Merits & Demerits of Pedigree Method
- Excellent method for improvement of easily observable and high heritable characters.
- As pedigree record is maintained, information regarding inheritance pattern of characters can be obtained as and when required.
- Each plant can be traced back to its parent plant.
In which generation would you start selection in pedigree method?
Bulk inbreeding in the F2 and F3 generations is used by some breeders to inexpensively produce relatively uniform lines in which to begin pedigree selection. Pedigree selection should focus only on highly heritable, easily-scored traits.
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.
What are the method of breeding?
System of breeding. Basically, there are two methods of breeding which are as follows: Inbreeding : Breeding of the related animals as sire (male) and dam (female) are known as inbreeding. Out breeding : Out breeding of unrelated animals as male and female is known as out breeding.
What is a good pedigree?
An animal is considered to have a good pedigree when all its known ancestors are of the same type. 60 percent of dogs and ten percent of cats have pedigrees. countable noun.
Is pedigree breeding bad?
The problem with pedigree. Over thousands of years, humans have bred dogs to look or behave in a certain way. For some dogs this means that their features have become exaggerated, like flat-face on a Pug or the wrinkly skin of a Shar Pei. … These dogs are likely to suffer from painful disc problems affecting their spine.
What is the basis of mass selection?
In mass selection, a number of individuals chosen on the basis of appearance are mated; their progeny are further selected for the preferred characteristics, and the process is continued for as many generations as is desired.
What is meant by family selection?
Family selection refers to mating of organisms from the same ancestral stock that are not directly related to each other. Pure-line selection involves selecting and breeding progeny from superior organisms for a number of generations until a pure line of organisms with only the desired…