What is pedigree record?
a zootechnical document that contains information on the origin, breed, growth and development, productivity, and other qualities of pedigree animals. Pedigree records are maintained in order to standardize the data needed to appraise pedigree animals and determine their use.
What are the steps in 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 does pedigree method mean?
The pedigree method describes a selection protocol utilized during the inbreeding of populations of self- and cross-pollinated species in the development of homozygous lines.
What is mass pedigree method?
Mass Pedigree method. This method consists of selection among individual plants and their progeny during inbreeding following crosses between selected donor parents. The parents are normally crossed in a single cross system. The F2 populations are subjected to selection for apparent desirable traits viz.
Why maintenance breeding is essential?
(i) It is a simple method of varietal maintenance. (ii) It is used for purification of improved varieties. (iii) It can also be used for purification of parental lines of hybrids. (iv) It retains diversity in the variety.
What is pedigree construction?
Pedigree construction is a family history, and details about an earlier generation may be uncertain as memories fade. If the sex of the person is unknown a diamond is used. Someone with the phenotype in question is represented by a filled-in (darker) symbol.
In which breeding method record of ancestry is maintained?
Pedigree breeding is a method of genetic improvement of self-pollinated species in which superior genotypes are selected from segregating generations and proper records of the ancestry of selected plants are maintained in each generation.
What is pedigree dog breeding?
An AKC Pedigree is a printed or electronic document that displays the lineage of an AKC dog and important information about the ancestors in a dog’s family tree.
What are breeding methods?
The breeding method (or cycle) is complete when the best line(s) are released as improved pure-line cultivars or improved germplasm. The pure-line cultivar is what is grown by the farmer. Soybean breeders and geneticists use many different breeding methods for cultivar and/or germplasm development.
What are the advantages of pedigree?
Advantages of Pedigree Method
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. Only those progeny lines which contain plants with desired characters are selected for next generation.
What is the important breeding objective of rice?
The primary research objective of RES is the development of high yielding and quality rice varieties of all grain types (short, medium, long) and market classes to enhance marketing potential, reduce cost, and increase profitability of rice.
What is backcross method?
backcross. A breeding method used to move one or a only a few desirable genes from an agronomically poor crop line to an elite line. This is done by crossing a donor parent to an elite line, and crossing offspring with the ‘desired gene(s)’ back to the elite parent.