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Conventional and Molecular Approaches towards Genetic Improvement in Pigeonpea for Insects Resistance

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DOI: 10.4236/ajps.2013.42A049    5,837 Downloads   11,617 Views   Citations


Pigeonpea [Cajanus cajan (L.) Millspaugh] is an important food legume of the semi-arid tropics (SAT) sustaining livelihood of millions of people. Stagnant and unstable yield per hectare all over the world is the characteristic feature of this crop. This is primarily ascribed to its susceptibility/sensitivity to a number of biotic and abiotic factors. Among biotic factors, insects such as pod borer (Helicoverpa armigera), pod fly (Melanoagromyza obtusa) and spotted borer (Maruca vitrata) substantially damage the crop and result in significant economic losses. Management of these insects by genetic means has always been considered environment friendly approach. However, genetic improvement has always been impeded by limited genetic variability in the primary gene pool of pigeonpea. Wild species present in the secondary and tertiary gene pools have been reported to carry resistance for such insects. However, transfer of resistance through conventional backcrossing has not been much successful. It calls for gene introgression through marker assisted backcrossing (MABC) or advanced backcross breeding (AB breeding). In this review, we have attempted to assess the progress made through conventional and molecular breeding and suggested the ways to move further towards genetic enhancement for insects resistance in pigeonpea

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The authors declare no conflicts of interest.

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A. Choudhary, R. Raje, S. Datta, R. Sultana and T. Ontagodi, "Conventional and Molecular Approaches towards Genetic Improvement in Pigeonpea for Insects Resistance," American Journal of Plant Sciences, Vol. 4 No. 2A, 2013, pp. 372-385. doi: 10.4236/ajps.2013.42A049.


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