Admin Table of Contents
- 1 What is mating design in plant breeding?
- 2 Why mating designs are utilized for crop improvement?
- 3 What are three forms of plant breeding?
- 4 What is Biparental mating?
- 5 What do you know about the mating designs?
- 6 What are the types of breeding?
- 7 What is Diallel analysis?
- 8 Which design is extension of NCD III?
- 9 How to choose a mating design for estimating genetic variances?
What is mating design in plant breeding?
Mating design is a schematic cross between the groups or strains of plants are made in a plant breeding that is common in agriculture and biological science.
Why mating designs are utilized for crop improvement?
The four main significance of mating designs include (i) generation of information on genetic control of character, (ii) serves as basis for selection and development of elite genotypes in breeding population, (iii) estimation of genetic gain, and (iv) generation of information for evaluation of parents in breeding …
What are three forms of plant breeding?
What are the different kinds of crop breeding?
- Backcrossing or introgression breeding. Crop breeders sometimes use a process called backcrossing.
- Inbreeding.
- Hybrid breeding.
- Mutation breeding.
- Molecular marker-assisted selection.
- Genetic engineering.
- Gene editing.
What is diallel mating design?
The diallel mating design generally estimates the variation of quantitative characters in the genetic components like assessment of plant seed quality. The estimation is also performed to deduce the combining ability of the different inbred lines which participate in the different crosses taken into consideration.
What is North Carolina design?
The North Carolina (NC) mating designs permit determination and/or estimation of variance components (additive and dominance components) by using the information from half-sib (HS) families. The design is the most commonly used in crop plants to estimate GCA and SCA and variances.
What is Biparental mating?
Biparental mating permits evaluation of segregating (F2 or later generation) population of an individual cross made between two inbred lines 6. It provides information about two components of genetic variance i.e additive and dominance variance 7. This technique helps in the selection of suitable breeding procedures.
What do you know about the mating designs?
Mating designs are used to generate genetic pedigrees, genetic information, and materials that can be used in a breeding program (Jenkins, 1934); they are also used in estimating information on general combining ability (GCA) and specific combining ability (SCA).
What are the types of breeding?
Mating of good quality animals to produce highly productive and suitable animals for enhancement of overall performance in the subsequent generations and to augment production and profitability is termed animal breeding.
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 is GCA and SCA?
General combining ability (GCA) is directly related to the breeding value of a parent and is associated with additive genetic effects, while specific combining ability (SCA) is the relative performance of a cross that is associated with non-additive gene action, predominantly contributed by dominance, epistasis, or …
What is Diallel analysis?
Diallel mating design is used to evaluate several inbred lines in terms of combining ability variances and effects. Diallel cross refers to mating of selected parents in all possible combinations and evaluation of a set of diallel crosses is known as diallel analysis.
Which design is extension of NCD III?
The triple testcross (TTC) design, proposed by Kearsey and Jinks (1968) as an extension of design III, provides a test for epistatic effects (A. E.
Mating design refers to the procedure of producing the progenies, in plant breeding, plant breeders and geneticists, theoretically and practically, they use different form of mating designs and arrangements for targeted purpose.
How to choose a mating design for estimating genetic variances?
The choice of a mating design for estimating genetic variances should be dictated by the objectives of the study, time, space, cost and other biological limitations. In all mating designs, the individuals are taken randomly and crossed to produce progenies which are related to each other as half-sibs or full-sibs.
What are half sibs in mating studies?
In all mating designs, the individuals are taken randomly and crossed to produce progenies which are related to each other as half-sibs or full-sibs. A form of multivariate analysis or the analysis of variance can be adopted to estimate the components of variances.
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