Inheritance of resistance to groundnut rosette virus in groundnut (Arachis hypogaea L.)

Nigam, S N and Bock, K R (1990) Inheritance of resistance to groundnut rosette virus in groundnut (Arachis hypogaea L.). Annals of Applied Biology, 117 (3). pp. 553-560. ISSN 1744-7348

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A method of field screening groundnut seedlings for resistance to groundnut rosette virus (GRV), by means of which over 97% incidence was induced in rows of susceptible test plants, was developed at Chitedze Research Station in Malawi. Two GRV-resistant Virginia cultivars (RG 1 and RMP 40) were crossed with three susceptible cultivars, one from each of the Spanish (JL 24), Valencia (ICGM 48) and Virginia (Mani Pintar) botanical groups. Twelve F1 reciprocal crosses and their F2 and backcross generations were produced and the material screened in nurseries in 1985/86 and 1986/87. Seedlings raised from plants which did not become infected in the field were inoculated in the glasshouse in order to eliminate susceptible escapees. The numbers of diseased and healthy individuals in each population were subjected to χ2 tests. In the majority of the F2 populations a good fit was obtained for a ratio of one resistant to 15 susceptible plants, a ratio to be expected if resistance to GRV were determined by a pair of independent complementary recessive genes. This was further supported by data from backcross generations.

Item Type: Article
Uncontrolled Keywords: Groundnut;groundnut rosette virus;inheritance;complementary genes;field screening method
Subjects: Mandate crops > Groundnut
Depositing User: Mr Sanat Kumar Behera
Date Deposited: 31 Oct 2011 13:41
Last Modified: 14 Sep 2013 09:35
Official URL:
Acknowledgement: We thank Mr A. D. Mbvundula and Mr J. B. Kamangira for assistance.
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