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    Abstract
2012 (Vol. 4, Issue: 4)
Article Information:

Introgression of Helicoverpa armigera Resistance from Cajanus acutifolius-a Wild Relative from Secondary Gene Pool of Pigeon Pea (Cajanus cajan)

Deepak R. Jadhav, Nalini Mallikarjuna, Hari C. Sharma and Kulbhushan B. Saxena
Corresponding Author:  Nalini Mallikarjuna 

Key words:  Chlorogenic acid, flavonoids, Helicoverpa armigera, high seed weight, pigeonpea, pod borer, quercetin, resistance mechanisms, rutin
Vol. 4 , (4): 242-248
Submitted Accepted Published
February 07, 2012 April 14, 2012 July 15, 2012
Abstract:

The aim of the study was to introgress Helicoverpa armigera resistance from wild relative Cajanus acutifolius into pigeonpea, (Cajanus cajan L.), an important grain legume in South Asia, East Africa and the West Indies. Pigeonpea grain yields on farmer’s fields are quite low, largely because of damage by insect pests, of which legume pod borer Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) is the important pest worldwide. Pod borer has developed high levels of resistance to chemical insecticides. Currently, there are no cultivars of pigeonpea with high levels of resistance to H. armigera. Therefore, there is a need to identify and introgress resistance genes from the wild relatives of this crop. Wild relative of pigeonpea, Cajanus acutifolius (ICPW 15613) and the interspecific derivatives C. acutifolius x C. cajan have shown resistance to H. armigera. The results showed that all the test lines and C. acutifolius had high levels of flavonoids such as chlorogenic acid, quercetin and rutin in the flowers and buds, which may have resulted in less damage due to H. armigera larvae. Most of the test lines had more than 15.00 g of seed weight (100 seed weight) and beige seed color. These lines can be used for pigeonpea improvement for resistance to H. armigera.
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  Cite this Reference:
Deepak R. Jadhav, Nalini Mallikarjuna, Hari C. Sharma and Kulbhushan B. Saxena, 2012. Introgression of Helicoverpa armigera Resistance from Cajanus acutifolius-a Wild Relative from Secondary Gene Pool of Pigeon Pea (Cajanus cajan).  Asian Journal of Agricultural Sciences, 4(4): 242-248.
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