Beetika Kohli* and Veenu Kaul
Department of Botany, University of Jammu 180006
Email: kohlibeetika@gmail.com
Received-29.06.2015, Revised-10.07.2015
Abstracts: Recently Gopal(2014)in the meeting report on National Workshop on “Onion Improvement and Seed Production” laid emphasis on the prevention of onion shortage through genetic improvement. A number of bottlenecks brought to the fore included susceptibility to diseases, weather vagaries and non – availability of quality seeds. Among various remedial measures proposed to solve these problems; genetic improvement for better seed supply of onion was the most pronounced. Numerous gene transfer methods and breeding programmes were conducted and many are underway. The wild relatives of crop plants constitute important resource for improving agricultural production and also for maintaining sustainable agro-ecosystems. This, in trun, will ensure food security for the new millennium.
Keywords: Crop, Disease, Species, Onion
REFERENCES
Chuda, A. and Adamus, A. (2009). Aspects of interspecific hybridization within edible Alliaceae. Acta. Physiol. Plant. 31, 223-227.
Dar, G. H. and Naqshi, A. R. (2001). Threatened flowering plants of the Kashmir Himalaya – A checklist. Oriental Science, 6(1), 23-53.
de Vries, J. N., Wietsma, W. A. and Jongerius, M. C. (1992). Introgression of characters from Allium roylei Stearn into A. cepa L. In Hanelt, P., Hammer, K. and Knüpffer, H. (eds). The Genus Allium – Taxonomic Problems and Genetic Resources. Gatersleben, Germany. pp. 321-325.
Galvan, G. A. et al. (1997). Screening for resistance to anthracnose (Colletotrichum gloeosporioides Penz.) in, Allium cepa and its relatives. Euphytica, 95(2), 173-178.
Gopal, J. (2014). A step towards prevention of onion shortage. Current Science, 106(9), 1176-1177.
Hajra, P. K. (1983). Plants of north – western Himalayas with restricted distribution – A census. In SK Jain and RR Rao edited, An assessment of threatened plants of India, B. S. I. Botanic garden Howrah.
Khrustaleva, L. I. and Kik, C. (2000). Introgression of A. fistulosum into A. cepa mediated by A. roylei. Theor. Appl. Genet., 100, 17-26.
Kohli, B. and Gohil, R. N. (2009). Chromosomal heteromorphism in a population of Allium roylei Stearn. the nucleus, 52(1, 2), 1-8.
Kohli, B. and Gohil, R. N. (2011). Is Allium roylei Stearn still evolving through multiple interchanges? the nucleus, 54 (1), 19-23.
Kohli, B. and Gohil, R. N. (2009). Need to conserve Allium roylei Stearn: a potential gene reservoir. Genet. Resour. Crop Evol., 56, 891-893.
Kohli, B. (2007) Cytological studies in three collections of Allium roylei Stearn. M. Phil. Dissertation submitted to University of Jammu, pp. 1-74.
Kohli, B. (2013) Studies on chromosomal repatterning in Allium roylei Stearn. Ph. D. Thesis. Submitted to University of Jammu, pp. 1-135.
Mc Collum, D. G. (1982). Experimental hybrids between Allium fistulosum and A. roylei. Bot. Gaz., 143(2), 238-242.
Nasir, E. (1975). Flora of West Pakistan. No. 83 Alliaceae. Stewart Herbarium, Gordon College, Rawalpindi.
Pandey, A. et al. (2008). Realizing value of genetic resources of Allium in India. Genet. Resour. Crop Evol., 55, 985-994.
Pandita, M. L. (1994). Status of Allium production and research in India. International Symposium on Alliums for the tropics. ISHS Acta Horticulturae:358
Scholten, O. E. et al.(2007). The long and winding road leading to the successful introgression of downy mildew resistance into onion. Euphytica, 156(3), 345-353.
Sharma, G. and Gohil, R. N. (2008). Intrapopulation karyotypic variability in Allium roylei Stearn – a threatened species. Botanical Journal of the Linnean Society, 158, 242-248.
Simon, P. W. (2005). Realizing value from Central Asian Allium Germplasm collections. Hort. Science, 40(2), 309-310.
van der Meer, Q. P. and de Vries, J. N. (1990). An interspecific cross between Allium roylei Stearn and Allium cepa L., and its backcross to A. cepa. Euphytica, 47, 29-31.
Vu, H. Q. et al. (2012). Alien genes introgression and development of alien monosomic addition lines from a threatened species, Allium roylei Stearn, to Allium cepa L. Theor Appl Genet. 124(7), 1241-57.
Vu, H. Q. et al. (2011) Production of novel alloplasmic male sterile lines in Allium cepa harbouring the cytoplasm from Allium roylei. Plant Breeding, 130(4), 469-475.
Walter, K. S. and Gillet, H. J. (1998). IUCN Red List of Threatened Plants. Compiled by The World Conservation Monitoring Centre.