Indian Society of Genetics & Plant Breeding

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Inheritance of resistance to sterility mosaic virus in pigeonpea (Cajanu5 cajan (L.) Millsp.)

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The inheritance of resistance in pigeonpea to the Bangalore
strain of Sterility Mosaic Virus (PPSMV) was studied in
crosses involving 2 resistant lines (rCp 7035 and MAL
14) with no apparent symptoms and susceptible lines
(TTB 7, ICP 8863 and DBN1) with severe mosaic symptoms.
The F
1, F2, BC1 and BC2 generations were sown in the
field and screened following infector hedge, infector row
and leaf stapling techniques. Resistance was recessive
and appeared to be governed by two independent
non-allelic genes exhibiting complementary epistasis.
However, the presence of atleast one gene confering
resistance to the disease, in homozygous recessive
condition was found to be necessary to express resistance
phenotype.
 

Keywords: Pigeonpea, inheritance, sterility mosaic disease, biotic stress resistance

Info

Year: 2004
Volume: 64
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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