Abstract
Epidemiological studies of rusts of wheat were first taken up in India by Mehta who showed that due to intense summer heat the inoculum of rusts in any form is completely destroyed in the plains during the summer months. But the rust survives in the hills of North and South India. Recent work has identified different foci of infection and has shown that the primary source of stem rust lies mainly in the South Indian hills and that the North Indian hills contribute very little, if at all. Stripe rust, on the other hand, comes mainly from the northern hills while leaf rust is contributed both by southern and northern hills. This view is supported by detailed studies of temperature profile, incubation period, disease gradient etc. Moreover, it has been shown that the cyclones in the Bay of Bengal play a very vital role in dissemination of stem and leaf rusts from Nilgiri and Pulney hills. The ground survey data and information collected through rain sampler, satellite television cloud photography etc. are being utilized for developing bioclimatic models and linear prediction equations. For the disease management, erecting genetical barriers through gene-deployment has been suggested.
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Joshi, L.M., Srivastava, K.D. & Singh, D.V. Monitoring of wheat rusts in the Indian sub-continent. Proc. Indian Acad. Sci. 94, 387–406 (1985). https://doi.org/10.1007/BF03053154
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DOI: https://doi.org/10.1007/BF03053154