Title: Molecular mapping and marker-assisted selection for major-gene traits in rice
Abstract: Rice Genetics CollectionRice Genetics IV, pp. 137-151 (2008) No AccessMolecular mapping and marker-assisted selection for major-gene traits in riceD. J. Mackill and Junjian NiD. J. MackillUSDA-ARS, Department of Agronomy and Range Science, University of California, Davis, CA 95616, USA and Junjian NiUSDA-ARS, Department of Agronomy and Range Science, University of California, Davis, CA 95616, USAhttps://doi.org/10.1142/9789812814296_0009Cited by:16 (Source: Crossref) PreviousNext AboutSectionsPDF/EPUB ToolsAdd to favoritesDownload CitationsTrack CitationsRecommend to Library ShareShare onFacebookTwitterLinked InRedditEmail Abstract: Since the late 1980s, many loci controlling both qualitative and quantitative traits of rice have been mapped using DNA markers. This chapter focuses on the mapping of major genes in rice. The distinction between major and minor genes has become unclear because of advances in molecular-marker mapping. A major gene can be involved in determining both qualitative and quantitative traits. Here we define a major gene as a locus that results in discrete phenotypes in a segregating population or one that controls more than 50% of the phenotypic variation for a continuously distributed trait. The latter is common for major genes controlling traits that are highly influenced by environment. Resistances to diseases and insects have received the most attention for mapping because of their importance as breeding objectives. Molecular mapping of major genes is important in determining the allelism of genes conferring identical phenotypes, use as a selectable marker in a breeding program, and positional cloning of genes. Molecular markers will be most useful for selection when (1) the phenotype is difficult or expensive to measure directly, (2) genes of similar phenotype are being pyramided into a single line, or (3) markers are being used to select against the donor genome in a backcrossing program. FiguresReferencesRelatedDetailsCited By 16Cited by lists all citing articles based on Crossref citation.Drought stress in rice: morpho-physiological and molecular responses and marker-assisted breedingMuhammad A. Hassan, Ni Dahu, Tong Hongning, Zhu Qian and Yi Yueming et al.18 July 2023 | Frontiers in Plant Science, Vol. 14Creation of new rice genotypes tolerant to long-term water flooding using DNA markersE. V Dubina, S. A Lesnyak, S. V Garkusha, Yu. A Makukha and A. 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Publication Year: 2008
Publication Date: 2008-03-26
Language: en
Type: book-chapter
Indexed In: ['crossref']
Access and Citation
Cited By Count: 46
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