Kaushika, D. and Srivastava , S. and Singh, J.P. and Chauhan, V.B. and Singh, R.N. (2013) Evaluation of Pigeonpea Genotypes against Sterility Mosaic Disease (SMD) Caused By the Mite Vector, Aceria Cajani. Journal of mycopathological research, 51 (2). pp. 225-233.
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Abstract
Pigeonpea (Cajanus cajan (L.) Mills.) is one of the major pulse crops of the tropics and subtropics. It is cultivated on 5.25 million hectares with annual production of over 3 million tones contributing to about 5% of the total world production. Nearly 90% of the global pigeonpea cultivation is confined to India and Nepal, the remainder is in Africa (6%), Caribbean (2%) and other Southeast Asian countries. Nearly fifty diseases occur in mild to severe form in pigeonpea. Of these Sterility Mosaic (SM), Fusarium wilt and Phytophthora blight are economically important. SMD causes substantial yield losses to pigeonpea in India and its neighboring countries. SMD, considered to be viral in etiology is a major disease limiting the pigeonpea production in the Indian subcontinent. The SMD causal agent is spread by the mite vector, Aceria cajani Channabasvanna. A field experiment was conducted during the period of two years i.e. 2008-09 and 2009-10 at the Institute of Agricultural Sciences, Banaras Hindu University, Varanasi. During the field experiment, 36 genotypes were screened for resistance against SMD and it was found that eighteen genotypes were free from the disease and grouped as highly resistant. Effect of different sowing dates was observed in the most susceptible variety ICP-8863, but it was found that disease development was irrespective of sowing dates. Symptom appeared after 15 days of sowing. The infection to most plants occurred in September and October in both the crop seasons i.e. 2008-2009 and 2009-2010. Mite population was also observed in these plots and it was found that mite population was highest in the month of April in 2008-2009 crop seasons and in 2009-2010 crops season maximum mite population was observed in the month of November and December. Mite population in the resistant and susceptible genotypes of pigeonpea was observed. Only a few eggs were visible in resistant varieties and heavy mite population was observed in the susceptible varieties. The effect of SMD on plant height along with their branches was also observed and can be concluded that severe mosaic affect the plant height, and branches of the pigeonpea plants. The disease severity was high in the early stage of infection causing severe mosaic disease where flower and pod formation was ceased resulting in complete crop failure
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | : Pigeonpea, Aceria cajani, SMD, sterility mosaic, PPSMV |
| Author Affiliation: | Indian Mycological Society, Department of Botany, University of Calcutta, Kolkata 700 019, India |
| Subjects: | Plant Protection Crop Improvement |
| Divisions: | Pigeonpea |
| Depositing User: | Mr Daneti Raju |
| Date Deposited: | 13 Dec 2013 13:10 |
| Last Modified: | 13 Dec 2013 13:10 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/12226 |
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