Role of Plant Genetic Resources in Food Security

Redden, R J and Upadyaya, H D and Dwivedi, S L and Vadez, V and Abberton, M and Amri, A (2019) Role of Plant Genetic Resources in Food Security. In: Food Security and Climate Change. John Wiley & Sons, pp. 159-188. ISBN 978-1-119-18064-7

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Within the last 13 000 yearsmany crop species were domesticated and spread to a range of agri-ecological environments, varying by species (Hancock 2012a).There was manual selection for both food and agronomic characteristics, and natural selection for adaptation to new agro-ecological environments. Such selection was affected by available gene pools, continuing sources of genetic diversity from wild relatives andmutations, natural selection pathways fromstabilising to directional, and both allo- and auto-polyploidy, to result in unique gene pool patterns for each crop (Hancock, 2012b; Cortes et al., 2013). Thedistribution of wheatwas expanded greatlywith the addition of the Aegilops tauschii D genome to tetraploid durum wheat, thereby enabling hexaploid wheat to adapt to a much wider agroecological range from the subtropics to high latitudes, and to provide a wider diversity of food uses (Hancock, 2012c)...

Item Type: Book Section
Divisions: Research Program : Genetic Gains
Uncontrolled Keywords: Plant Genetic Resources, Food Security, Climate Change, Agriculture, Crop Genetic Diversity, ICARDA, IITA, ICRISAT, Genebanks, Abiotic Stress, CropWild Relatives, Biotic stress, Chickpea, Groundnut, Pigeonpea, Pearl millet, Sorghum, Finger millet, Drought Tolerance
Subjects: Mandate crops > Millets
Others > Genetics and Genomics
Others > Germplasm
Others > Gene Bank
Depositing User: Mr Ramesh K
Date Deposited: 23 Jul 2019 07:49
Last Modified: 23 Jul 2019 07:55
Acknowledgement: UNSPECIFIED
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