Molecular markers and marker-assisted selection in rice

Mackill, D.J. (2007) Molecular markers and marker-assisted selection in rice. In: Genomics-Assisted Crop Improvement. Genomics Applications in Crops, 2 . Springer, The Netherlands, pp. 147-168. ISBN ISBN 978-1-4020-6297-1

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The status of rice as a model crop and the sequencing of the indica and japonica genomes have provided breeders with the necessary tools for marker assisted breeding. Simple Sequence Repeat (SSR) markers are easily available for any region of the genome, and candidate gene markers are being developed rapidly. The likely targets of MAS include yield and agronomic traits, cooking and nutritional quality, and resistances to abiotic and biotic stresses. MAS for gene pyramiding for disease and insect resistances is being widely used. For major genes and QTLs of larger effect, marker assisted backcrossing (MAB) is an effective method for developing improved versions of widely-grown “mega” varieties. Developing submergence tolerant mega varieties is a good example of how the MAB approach can result in significantly improved mega varieties within two to three years. The use of markers in more conventional breeding nurseries has been limited by cost, but is beginning to be applied for some traits like grain quality. Lower-cost marker methods combined with large-scale gene discovery will increase the use of MAS over the next decade

Item Type: Book Section
Author Affiliation: International Rice Research Institute, DAPO Box 7777, Metro Manila, Philippines
Subjects: Agricultural Engineering
Crop Improvement > Biotechnology
Divisions: Other Crops
Depositing User: Ms K Syamalamba
Date Deposited: 26 Sep 2013 05:05
Last Modified: 26 Sep 2013 05:05
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