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Agronomy 2013, 3(1), 200-231; doi:10.3390/agronomy3010200

Induced Mutations Unleash the Potentials of Plant Genetic Resources for Food and Agriculture

Plant Genetic Resources and Seeds Team, Plant Production and Protection Division, Food and Agriculture Organization of the United Nations, Viale delle Terme di Caracalla, Rome, 00153, Italy
Received: 7 November 2012 / Revised: 15 January 2013 / Accepted: 30 January 2013 / Published: 5 March 2013
(This article belongs to the Special Issue Sustainable Crop Production)
View Full-Text   |   Download PDF [365 KB, uploaded 5 March 2013]   |  

Abstract

The options for increasing food production by at least 70% over the next four decades so as to keep pace with a rapidly increasing human population are bedeviled by erratic climatic conditions, depleted arable lands, dwindling water resources and by the significant environmental and health costs for increasing the use of agrochemicals. Enhanced productivities through “smart” crop varieties that yield more with fewer inputs is a viable option. However, the genetic similarities amongst crop varieties—which render entire cropping systems vulnerable to the same stresses—coupled with unvarying parental materials limit the possibilities for uncovering novel alleles of genes and, hence, assembling new gene combinations to break yield plateaux and enhance resilience. Induced mutation unmasks novel alleles that are harnessed to breed superior crop varieties. The historical antecedents, theoretical and practical considerations, and the successes of induced mutations in crop improvement are reviewed along with how induced mutagenesis underpins plant functional genomics. The roles of cell and molecular biology techniques in enhancing the efficiencies for the induction, detection and deployment of mutation events are also reviewed. Also, the integration of phenomics into induced mutagenesis and the use of pre-breeding for facilitating the incorporation of mutants into crop improvement are advocated. View Full-Text
Keywords: induced mutations; mutagens; mutant; crop improvement; genomics; cell biology; TILLING; phenomics; pre-breeding induced mutations; mutagens; mutant; crop improvement; genomics; cell biology; TILLING; phenomics; pre-breeding
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Mba, C. Induced Mutations Unleash the Potentials of Plant Genetic Resources for Food and Agriculture. Agronomy 2013, 3, 200-231.

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