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Alternaria alternata: A new Pathotype of the Fungus causing Alternaria leaf spot to Lettuce.
Author(s):
1. Zainab Bukhari: Department of Botany, University of Gujrat, Pakistan
2. Faisal Nouroz: Department of Bioinformatics, Hazara University Mansehra, Pakistan
3. Umbrin Ilyas: Department of Botany, University of Gujrat, Pakistan
4. Shumaila Noreen: Department of Zoology, University of Peshawar, Pakistan
5. Sumaria Saeed: Department of Botany, University of Gujrat, Pakistan
Abstract:
Lettuce (Lactuca sativa) is major leafy vegetable used all over the world as salad and in various dishes. Alternaria leaf spot caused by Alternaria alternata is considered to be the most devastating disease of this crop. The fungus is major threats to yield of several crops and vegetables in both organic and conventional production. In the present research, three different varieties of lettuce (green bowl; V1, rapid green; V2 and red bowl; V3) were used as substrate and A. alternata as an experimental pathogen. This work involved the study of screening L. sativa varieties for their resistance against A. alternata.Several experiments were conducted to study physiological and biochemical parameters of plants after disease occurrence. The results indicated that disease severity was low at 5ml inoculum level and high at 15ml - 20ml of inoculum levels in variety ‘rapid green’ and variety ‘green bowl. With the increase in A. alternata inoculum concentrations, the value for every parameter decreases. The main objective of the study was to study physiological and biochemical variabilities in Lettuce varieties against A. alternata.
Page(s): 188-194
DOI: DOI not available
Published: Journal: International Journal of Agriculture and Applied Sciences, Volume: 6, Issue: 2, Year: 2014
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