How does marker assisted selection work

Please choose an option. Send enquiry. Please leave this field empty or your enquiry will not be submitted: You shouldn't be able to see this field. Please try again and leave the field blank. There was an error processing your request Sorry, an error has occured, please try again. Thank you We have received your enquiry and will reply soon. We're Sorry The contact form is currently unavailable. Several examples illustrate the achievement, made through marker-assisted selection; however, in Table 2 , few paradigm crop-wise and trait wise have been presented.

Apart from the improvement in specific traits through an indirect selection via MAS, there are varieties that are released through MAS also presented in Table 3. Varieties developed through Marker Assisted Selection [ 41 ].

Molecular marker technology has traveled more than 30 years since the identification of the first marker i. Molecular marker can assist in the selection process with phenotypic selection and speed up the pace of the breeding cycle.

In recent times modern technologies such as NGS i. The most probable reason is inaccurate phenotyping, and this problem can be alleviated by using modern throughputs phenotyping techniques such as camera or computer or sensor-based techniques in phenomics. Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution 3. Help us write another book on this subject and reach those readers. Login to your personal dashboard for more detailed statistics on your publications.

Edited by Ibrokhim Y. By Lovina I. We are IntechOpen, the world's leading publisher of Open Access books. Built by scientists, for scientists. Our readership spans scientists, professors, researchers, librarians, and students, as well as business professionals. Downloaded: Abstract Burgeoning the human population with its required food demand created a burden on ever-decreasing cultivated land and our food production systems.

Keywords marker-assisted selection plant breeding molecular markers QTLs indirect selection. Introduction It was estimated that the global population would touch 9 billion individuals, and the annual growth rate will be 0. Year Events Sax reported a linkage map between quantitative seed size and qualitative trait seed coat color in common bean for the first time. Table 1. A chronology of the historical steps in molecular breeding.

Provide resistance to kernel damage and associated post-harvest loss and contaminations. Table 2. The paradigm of MAS in crops. Table 3. More Print chapter. How to cite and reference Link to this chapter Copy to clipboard. Available from:. Over 21, IntechOpen readers like this topic Help us write another book on this subject and reach those readers Suggest a book topic Books open for submissions.

More statistics for editors and authors Login to your personal dashboard for more detailed statistics on your publications. Access personal reporting. More About Us. Sax reported a linkage map between quantitative seed size and qualitative trait seed coat color in common bean for the first time. Thodey described QTLs mapping in Drosophila melanogaster. Williams JGK et al. Williams MNV et al. QTL qMrdd. Feasibility of SSR marker associated genes yld1.

Hybrid of Hui restorer line and Pi9 , Pi2 respectively impart blast resistance. QTL alleles introgression ensured yield potential and biomass stability under multiple environments. SlideShare uses cookies to improve functionality and performance, and to provide you with relevant advertising. If you continue browsing the site, you agree to the use of cookies on this website.

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Genetic marker 1. The markers are a string or sequence of nucleic acid which makes up a segment of DNA. The markers are located near the DNA sequence of the desired gene and are transmitted by the standard laws of inheritance from one generation to the next Figure 1.

Since the markers and the genes are close together on the same chromosome, they tend to stay together as each generation of plants is produced. This is called genetic linkage. This linkage helps scientists to predict whether a plant will have a desired gene. If researchers can find the marker for the gene, it means the desired gene itself is present.

As scientists learn where markers occur on a chromosome, and how close they are to specific genes, they can create a genetic linkage map.

Such a map would show the location of markers and genes, and their distance from other known genes. Scientists can produce detailed maps in only one generation of plant breeding. Once the tissue is analyzed, scientists know whether that seedling contains the appropriate gene. It should be noted, however, that molecular breeding through MAS is somewhat limited in scope compared to genetic engineering or modification because: 1 it works only for traits already present in a crop; 2 it cannot be used effectively to breed crops which have long generation times e.

Several marker systems have been developed and are applied to a range of crop species. The advantages and disadvantages of these marker systems are provided in Table 1.