Antifungal activity of two alkaloids ofZephyranthes citrinaand their field efficacy against powdery mildew (Erysiphe cichoracearum) of balsam
| Autor: | Udai Pratap Singh, Sudarshan Maurya, V. B. Pandey, Leena Gohain, Amitabh Singh, Ashok K. Singh |
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| Rok vydání: | 2010 |
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| Zdroj: | Archives Of Phytopathology And Plant Protection. 43:302-311 |
| ISSN: | 1477-2906 0323-5408 |
| DOI: | 10.1080/03235400701804067 |
| Popis: | The anti-fungal activity of two alkaloids isolated from bulbs of Zephyranthes citrina was observed against 10 fungi, viz, Aternaria solani, A. triticina, Curvularia lunata, C. maculuns, Cercospora malvacearum, Erysiphe sp., Fusarium udum, Helminthosporium pisi, H. speciferum and Ustilago cynodontis. Different concentrations (200, 400, 600, 800, 1000 µg/ml of alkaloids (A and B) were used. Spore germination was inhibited at 600, 800, 1000 µg/ml. B alkaloid was used against Erysiphe cichoracearum causing powdery mildew in balsam (Impatiens balsamina) in the field as pre- and post-inoculation treatments at 1000, 1500, 2000 µg/ml doses. The extract was effective in both pre- and post-inoculation treatments. Foliar application of this alkaloid resulted in inducing synthesis of phenolic acid in the leaves of balsam. Maximum phenolics were detected in the leaves treated with 1500 µg/ml in both pre- and post-inoculation treatments. The increase in the production of phenolics in treated leaves of balsam can be cor... |
| Databáze: | OpenAIRE |
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