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Effect of temperature and pre soaking on teliospore germination in urocystis agropyri causing flag smut of wheat

Effect of temperature and pre soaking on teliospore germination in urocystis agropyri causing flag smut of wheat

Indian Journal of Plant Pathology 3(1): 134-137

Effect of temperature and pre-soaking on the germination of teliospores of U. agropyri (Preuss.) Schroet causing flag smut of wheat was studied in vitro. Pre-soaking in water at 18-20C for seven days followed by incubation in the presence of fresh host tissues at the same temperature for 24 hrs. or at 14-16 C for 36 hrs. induced the highest percentage of germination. The temperature of incubation affected the rate as well as the percentage of teliospore germination. At C, the germinating teliospores of produced promycelia in 12 hrs, sporidia in 18 hrs and infection threads in 24 hrs. At C, the formation of promycelia, sporidia and infection threads was observed after 18, 24 and 36 hrs. of incubation, respectively. At C no infection threads were observed even after 96 hrs of incubation. Significance of these results in relatin to the incidence of flag smut in India has been discussed.

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Accession: 005274744

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