Prediction of cotton leaf curl virus disease and its management through resistant germplasm and bio-products |
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Authors: | Humera Saeed Muhammad Atiq Muhammad Kamran Muhammad Idrees Shaukat Ali |
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Institution: | 1. Department of Plant Pathology, University of Agriculture, Faisalabad, Pakistan;2. Plant Pathology Research Institute, Ayub Agriculture Research Institute, Faisalabad, Pakistan |
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Abstract: | Cotton leaf curl virus disease reduces the cotton yield significantly every year and is transmitted by Bemisia tabaci. The study was designed to evaluate 15 varieties/lines against the disease. Multiple regression analysis was performed based on a-biotic environmental variables (maximum air temperature, minimum air temperature, relative humidity and rainfall) to predict disease incidence and its vector (Bemisia tabaci). Two bio-products were evaluated against the whitefly population to control the disease. Out of 15 cotton varieties/lines, no one was found highly resistant against the disease. Five varieties/lines (BT BT-980, BT-457, KIRAN, BT-666 and SLH-BT-6) exhibited moderately resistant response. Maximum air temperature (34–35.5 °C), minimum temperature (25.75–26.25 °C), relative humidity (64.14–66%), rainfall (1–2 mm) and wind speed (5.50–5.75 Kmh?1) favoured the disease development. Maximum whitefly population was favoured by maximum air temperature from 34–35.5 °C, 25.8–26.2 °C minimum air temperature, 64.14–66% relative humidity, 1–2 mm from rainfall and 5.50–5.75 Kmh?1 wind speed. Datura stramonium was found more effective as compared to Aviara (Homoeopathic) but not from the positive control (Acetamiprid). |
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Keywords: | Cotton cotton leaf curl virus disease cotton leaf curl virus B tabaci Aviaria Datura stramonium |
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