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Molecular breeding
About: Molecular breeding is a research topic. Over the lifetime, 2120 publications have been published within this topic receiving 56908 citations.
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23 Sep 2019
TL;DR: It is probable that long-term genetic gain of genomic selection will be be improved by Jannink’s weighting (JW) method, in which rare favorable marker alleles are weighted in the selection criterion.
Abstract: Reaction to selection in modern breeding programs has been expanded because of constant changes in the techniques for hereditary assessment. Without genomic data, hereditary assessment should center on amplifying the accuracy of evaluated breeding values (EBVs) and expanding the mean EBV of selected parents so there is no conspicuous chance to increase long-term response. The availability of single nucleotide polymorphism (SNP)-chips introduces new opportunities to optimize short versus long-term response under restricted inbreeding. Whenever frequencies and impacts of alleles underlying trait values can be assessed, an exchange between short and long-term optimum selection policies strategies will appear. Therefore, a technique to discover the optimum index to maximize long-term response is resulting from the weight given to a marker according to its frequency. It is probable that long-term genetic gain of genomic selection will be be improved by Jannink’s weighting (JW) method, in which rare favorable marker alleles are weighted in the selection criterion. The JW technique was spread by including an additional factor to decrease the stress on rare favorable alleles over the time horizon and has been called dynamic weighting (DW). In comparison to unweighted genomic estimate, both DW and JW can improve longterm genetic gain and decrease inbreeding rate.
1 citations
Patent•
27 Aug 2015
1 citations
14 Jan 2013
1 citations
1 citations
Patent•
28 Jan 2015
TL;DR: In this article, a molecular marker HY-18 which is tightly interlocked with a radish leaf margin lobe gene is obtained through the steps of selecting an appropriate parent to hybridize to obtain a plant F1; seeding a seed F1, bagging the plant F 1 to inbreed and backcross to obtain segregation populations F2 and BC1; constructing a radisch leaf supersulcus gene pool and a total leaf lobe gene pool, designing a specific primer, carrying out PCR, recovering, cloning, sequencing and screening; and the nucleotide sequence of the molecular
Abstract: The invention belongs to the technical field of preparation of molecular markers of vegetables and particularly relates to a molecular marker suitable for detecting the radish leaf margin lobe trait and an application of the molecular marker. A molecular marker HY-18 which is tightly interlocked with a radish leaf margin lobe gene is obtained through the steps of selecting an appropriate parent to hybridize to obtain a plant F1; seeding a seed F1, bagging the plant F1 to inbreed and backcross to obtain segregation populations F2 and BC1; constructing a radish leaf supersulcus gene pool and a total leaf lobe gene pool, designing a specific primer, carrying out PCR, recovering, cloning, sequencing and screening; and the nucleotide sequence of the molecular marker is as shown in SEQ ID NO.1 in a sequence table. The invention also discloses a preparation method of the molecular marker. The molecular marker prepared by using the preparation method can be used for analyzing radish leaf lobe populations, and the practical marker and method are provided for molecular breeding of radishes.
1 citations