Asian Journal of Bio Science

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Effect of Dates of Sowing on First Symptom Appearance and Incidence of Sterility Mosaic in Pigeonpea [Cajanus cajan (L) Millsp.]


Affiliations
1 Department of Mycology and Plant Pathology, Banaras Hindu University, Varanasi (U.P.), India
2 Department of Genetics and Plant Breeding, Banaras Hindu University, Varanasi (U.P.), India
3 Department of Agronomy, Banaras Hindu University, Varanasi (U.P.), India
     

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The experiment was conducted in pots (30 cm in diameter.) which were filled with field soil. Ten selfed seeds of each of 11 genotypes of pigeonpea were sown in three pots at different dates viz., 15th September 2003, 25th November 2003 and 16th January 2004 to know the effect of different dates of sowing on the first symptom appearance and incidence of disease. Pigeonpea genotypes susceptible to sterility mosaic, exhibited symptoms of disease irrespective of three different dates of sowing. The highly resistant genotypes like ICP 7035 and ICP 8862 were free from sterility mosaic at all different dates of sowing. The incidence of disease in all genotypes sown in September was significantly higher as compared to incidence of disease exhibited by genotypes sown in November and January. The period required for first symptom appearance was significantly shorter in September sowing crop as compared to crop grown in November and January.

Keywords

Pigeonpea, Sterility Mosaic.
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  • Effect of Dates of Sowing on First Symptom Appearance and Incidence of Sterility Mosaic in Pigeonpea [Cajanus cajan (L) Millsp.]

Abstract Views: 268  |  PDF Views: 0

Authors

Shiv Om
Department of Mycology and Plant Pathology, Banaras Hindu University, Varanasi (U.P.), India
V. B. Chauhan
Department of Mycology and Plant Pathology, Banaras Hindu University, Varanasi (U.P.), India
S. B. Sarode
Department of Genetics and Plant Breeding, Banaras Hindu University, Varanasi (U.P.), India
P. M. Wayazade
Department of Agronomy, Banaras Hindu University, Varanasi (U.P.), India

Abstract


The experiment was conducted in pots (30 cm in diameter.) which were filled with field soil. Ten selfed seeds of each of 11 genotypes of pigeonpea were sown in three pots at different dates viz., 15th September 2003, 25th November 2003 and 16th January 2004 to know the effect of different dates of sowing on the first symptom appearance and incidence of disease. Pigeonpea genotypes susceptible to sterility mosaic, exhibited symptoms of disease irrespective of three different dates of sowing. The highly resistant genotypes like ICP 7035 and ICP 8862 were free from sterility mosaic at all different dates of sowing. The incidence of disease in all genotypes sown in September was significantly higher as compared to incidence of disease exhibited by genotypes sown in November and January. The period required for first symptom appearance was significantly shorter in September sowing crop as compared to crop grown in November and January.

Keywords


Pigeonpea, Sterility Mosaic.