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Potential of wild species for genetic enhancement of some semi-arid food crops

OAR@ICRISAT

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Relation http://oar.icrisat.org/1373/
http://dx.doi.org/10.1023/A:1025055018954
 
Title Potential of wild species for genetic enhancement of some semi-arid food crops
 
Creator Rao, N K
Reddy, L J
Bramel, P J
 
Subject Agriculture-Farming, Production, Technology, Economics
 
Description Discovery and incorporation of genes from wild species provide means to sustain crop improvement, particularly when levels of resistance in the cultigens are low and virulent strains of pests and pathogens overcome the host plant resistance. The extent of utilization and the potential of the wild genepool for genetic enhancement were reviewed in five important food crops viz. sorghum, pearl millet, chickpea, pigeonpea and groundnut grown in the semi-arid tropics. Introgression from compatible wild germplasm in the primary gene pool resulted in transfer of new cytoplasmic male sterility systems in pearl millet and pigeonpea, development of high protein, cleistogamous flower and dwarf pigeonpea lines and foliar disease resistant groundnut cultivars. Utilization of wild species in secondary and tertiary gene pools has been generally limited due to sterility, restricted recombination or cross incompatibility. Nevertheless, these species are extremely important as they contain high levels of resistance to several important biotic and abiotic stresses. Several of them, like those belonging to the Parasorghum section and the rhizomatous Arachis species are sources of multiple resistances and hold great promise to sustain crop productivity.
 
Publisher Kluwer
 
Date 2003
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/1373/1/GRCE50_7_707-721_2003.pdf
Rao, N K and Reddy, L J and Bramel, P J (2003) Potential of wild species for genetic enhancement of some semi-arid food crops. Genetic Resources and Crop Evolution, 50 (7). pp. 707-721.