Inheritance of resistance to two isolates of sterility mosaic pathogen in pigeonpea (Cajanus cajan (L.) Millsp.)

Srinivas, T and Reddy, M V and Jain, K C and Reddy, M S S (1997) Inheritance of resistance to two isolates of sterility mosaic pathogen in pigeonpea (Cajanus cajan (L.) Millsp.). Euphytica, 97 (1). pp. 45-52.

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Studies were conducted to determine the inheritance of resistance to two isolates of the pigeon pea sterility mosaic virus, in three crosses of pigeonpea, involving resistant (ICP 7035, ICP 7349 and ICP 8850) and susceptible (ICP 8863) lines. Observations of F1 and F2 plants were explained on the basis of two independent non-allelic recessive genes for the less virulent,old Patancheru isolate (isolate 1). The backcrosses corroborated the segregation pattern observed in the F2 generation. For the more virulent, new Patancheru isolate (isolate 2), differential behaviour of the F1''s was observed. Resistance was dominant in two crosses (ICP 7035 X ICP 8863 and ICP 7349 X ICP 8863), and susceptibility in the other cross (ICP 8850 X ICP 8863). The disease reaction for isolate 2, appeared to be governed by a single gene with three alleles, with one resistance allele exhibiting dominance and the other being recessive, over the allele for susceptibility. Monogenic inheritance of resistance to both isolates was noticed in the cross ICP 8850 X ICP 8863.

Item Type: Article
Subjects: Mandate crops > Pigeonpea
Depositing User: Library ICRISAT
Date Deposited: 17 Sep 2011 05:32
Last Modified: 17 Sep 2011 05:32
Official URL:
Funders: Council of Scientific and Industrial Research(India)
Acknowledgement: The senior author is grateful to the Council of Scientific and Industrial Research (CSIR), New Delhi, India for the award of Senior Research Fellowship during the period of the study. He is also thankful to ICRISAT Asia Center, Patancheru, Andhra Pradesh, India for providing field and greenhouse facilities for carrying out the research.
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