Introgression of phytophthora blight disease resistance from Cajanus platycarpus into short duration pigeonpea [Cajanus cajan (L.) Millsp.]

Mallikarjuna, N and Jadhav, D R and Reddy, M V and Dutta-Tawar, U (2005) Introgression of phytophthora blight disease resistance from Cajanus platycarpus into short duration pigeonpea [Cajanus cajan (L.) Millsp.]. Indian Journal of Genetics and Plant Breeding, 65 (4). pp. 261-263. ISSN 0019-5200.

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Abstract

Phytophthora blight is an important disease of pigeonpea. Resistance to this disease is not present in the germplasm collection. Cajanus platycarpus (accession ICPW 61), a wild species of pigeonpea, has many desirable characters including resistance to P3 (highly virulent) isolate of Phytophthora blight. Unfortunately C. platycarpus cannot be crossed with cultivated pigeonpea by conventional techniques. Hybrids were obtained by the use of embryo rescue techniques. F1 hybrids were 100% pollen sterile, hence were treated with colchicine to double their chromosome number. The resultant plants had double the chromosome number and were tetraploids. F1 plants were subjected to the pathogen. The results of this screening experiment showed that it was possible to transfer resistance to Phytophthora blight from the wild species C. platycarpus to cultivated pigeonpea. The results of F2 data indicated that the nature of resistance to be monogenic and recessive.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Uncontrolled Keywords:	Pigeonpea, disease resistance, microtomy, phytophthora blight, allotetraploid.
Subjects:	Mandate crops > Pigeonpea
Depositing User:	Mr Sanat Kumar Behera
Date Deposited:	10 Oct 2011 11:06
Last Modified:	22 Nov 2011 05:50
URI:	http://oar.icrisat.org/id/eprint/2203
Official URL:	http://www.indianjournals.com/ijor.aspx?target=ijo...
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

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