Wild Sorghums—Their Potential Use in Crop Improvement

Venkateswaran, K and Muraya, M and Dwivedi, S L and Upadhyaya, H D (2014) Wild Sorghums—Their Potential Use in Crop Improvement. In: Genetics, Genomics and Breeding of Sorghum. Series on Genetics, Genomics and Breeding of Crop Plants . CRC Press (Taylor & Francis), Boca Raton, pp. 56-89. ISBN 9781482210088

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Abstract

Wild relatives of crops, sorghum being no exception, continue to play a key role in the development of high performing cultivars. Among the 22 species comprising this highly variable genus, only one, Sorghum bicolor, is commercially cultivated for food, feed and bioenergy production. The wild sorghums thus offer opportunities for further genetic enhancement of this crop. Profi table utilization of wild species however demands an inter-disciplinary, multi-pronged approach to increase the probability of achieving the desired genetic improvement. To this end, this chapter presents a review of the current knowledge on (1) biosystematic aspects such as botany, taxonomy and classifi cation, (2) domestication and evolution, including centers of diversity, genetic diversity, chromosome homologies and species/ phylogenetic relationships, (3) genetic resources, genepools and conservation perspectives including collections and preservation of germplasm, (4) utilization aspects including the specifi c potential of the wild species in crop improvement with reference to insect and disease resistance, yield, grain quality, ecological adaptation, allopatric resistance, and (5) strategies to maximize utilization of wild germplasm resources including direct hybridization, reproductive barriers and their circumvention, chromosome and physiological manipulation, the gaps between hybridization and utilization and molecular interventions. Recent advancements in biotechnology, in particular, are expected to increase the effi ciency and range of use of these wild sorghum species.

Item Type:	Book Section
Divisions:	RP-Grain Legumes
CRP:	CGIAR Research Program on Grain Legumes
Series Name:	Series on Genetics, Genomics and Breeding of Crop Plants
Uncontrolled Keywords:	Classification; Conservation; Distribution; Genepools; Phylogenetic Relationships; Utilization, Wild Relatives
Subjects:	Mandate crops > Sorghum
Depositing User:	Mr Ramesh K
Date Deposited:	07 Oct 2015 05:58
Last Modified:	07 Oct 2015 06:08
URI:	http://oar.icrisat.org/id/eprint/9053
Acknowledgement:	UNSPECIFIED
Links:	Google Scholar

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