Soil application of potassium silicate reduces the intensity of downy mildew in bitter gourd (Momordica charantia L.) leaves
Effect of soluble silicon (Si) on downy mildew in bitter gourd (<em>Momordica charantia </em>L.) leaves caused by <em>Pseudoperonospora cubensis </em>was tested using three concentrations of liquid potassium silicate (100, 200, 300 mg Si/kg) added to the growing medium contai...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Faculty of Science, University of Peradeniya, Sri Lanka
2016-06-01
|
| Series: | Ceylon Journal of Science |
| Subjects: | |
| Online Access: | https://cjs.sljol.info/articles/7371 |
| _version_ | 1811248424166621184 |
|---|---|
| author | R.M.R.N.K. Ratnayake W.A.M. Daundasekera H.M. Ariyarathne M.Y.U. Ganehenege |
| author_facet | R.M.R.N.K. Ratnayake W.A.M. Daundasekera H.M. Ariyarathne M.Y.U. Ganehenege |
| author_sort | R.M.R.N.K. Ratnayake |
| collection | DOAJ |
| description | Effect of soluble silicon (Si) on downy mildew in bitter gourd (<em>Momordica charantia </em>L.) leaves caused by <em>Pseudoperonospora cubensis </em>was tested using three concentrations of liquid potassium silicate (100, 200, 300 mg Si/kg) added to the growing medium containing top soil, compost and sand. Disease severity, plant growth parameters, silicon accumulation on leaves and cuticle-epidermal layer thickness of transverse sections of leaves were measured. Si treated plants exhibited less disease severity than that of control plants and 200 mg Si/kg treatment resulted in highly significant disease suppression (37 - 53% reduction against controls). The suppression of the disease strongly correlated with the Si accumulation in leaves. Cuticle-epidermis thickness was higher in Si- treated leaves (17.2 - 21.3 μm) against non-treated (10.3 - 13.81 μm). Numbers of leaves, flowers or fruits in Si treated plants were significantly higher (p < 0.05) than control plants except in 300 ppm Si level. Structural changes created by Si may at least be partly responsible for reducing the fungal disease severity in bitter gourd leaves. |
| first_indexed | 2024-04-12T15:27:48Z |
| format | Article |
| id | doaj.art-1eef485fd3164483a5a4cd8059bb1802 |
| institution | Directory Open Access Journal |
| issn | 2513-2814 2513-230X |
| language | English |
| last_indexed | 2024-04-12T15:27:48Z |
| publishDate | 2016-06-01 |
| publisher | Faculty of Science, University of Peradeniya, Sri Lanka |
| record_format | Article |
| series | Ceylon Journal of Science |
| spelling | doaj.art-1eef485fd3164483a5a4cd8059bb18022022-12-22T03:27:12ZengFaculty of Science, University of Peradeniya, Sri LankaCeylon Journal of Science2513-28142513-230X2016-06-01451233110.4038/cjs.v45i1.73615593Soil application of potassium silicate reduces the intensity of downy mildew in bitter gourd (Momordica charantia L.) leavesR.M.R.N.K. Ratnayake0W.A.M. Daundasekera1H.M. Ariyarathne2M.Y.U. Ganehenege3Postgraduate Institute of Science, University of PeradeniyaDepartment of Botany, University of Peradeniya, PeradeniyaHorticultural Crop Research and Development Institute, GannoruwaDepartment of Chemistry, University of Peradeniya, PeradeniyaEffect of soluble silicon (Si) on downy mildew in bitter gourd (<em>Momordica charantia </em>L.) leaves caused by <em>Pseudoperonospora cubensis </em>was tested using three concentrations of liquid potassium silicate (100, 200, 300 mg Si/kg) added to the growing medium containing top soil, compost and sand. Disease severity, plant growth parameters, silicon accumulation on leaves and cuticle-epidermal layer thickness of transverse sections of leaves were measured. Si treated plants exhibited less disease severity than that of control plants and 200 mg Si/kg treatment resulted in highly significant disease suppression (37 - 53% reduction against controls). The suppression of the disease strongly correlated with the Si accumulation in leaves. Cuticle-epidermis thickness was higher in Si- treated leaves (17.2 - 21.3 μm) against non-treated (10.3 - 13.81 μm). Numbers of leaves, flowers or fruits in Si treated plants were significantly higher (p < 0.05) than control plants except in 300 ppm Si level. Structural changes created by Si may at least be partly responsible for reducing the fungal disease severity in bitter gourd leaves.https://cjs.sljol.info/articles/7371bitter gourd, disease resistance, downy mildew, potassium silicate, silicon |
| spellingShingle | R.M.R.N.K. Ratnayake W.A.M. Daundasekera H.M. Ariyarathne M.Y.U. Ganehenege Soil application of potassium silicate reduces the intensity of downy mildew in bitter gourd (Momordica charantia L.) leaves Ceylon Journal of Science bitter gourd, disease resistance, downy mildew, potassium silicate, silicon |
| title | Soil application of potassium silicate reduces the intensity of downy mildew in bitter gourd (Momordica charantia L.) leaves |
| title_full | Soil application of potassium silicate reduces the intensity of downy mildew in bitter gourd (Momordica charantia L.) leaves |
| title_fullStr | Soil application of potassium silicate reduces the intensity of downy mildew in bitter gourd (Momordica charantia L.) leaves |
| title_full_unstemmed | Soil application of potassium silicate reduces the intensity of downy mildew in bitter gourd (Momordica charantia L.) leaves |
| title_short | Soil application of potassium silicate reduces the intensity of downy mildew in bitter gourd (Momordica charantia L.) leaves |
| title_sort | soil application of potassium silicate reduces the intensity of downy mildew in bitter gourd momordica charantia l leaves |
| topic | bitter gourd, disease resistance, downy mildew, potassium silicate, silicon |
| url | https://cjs.sljol.info/articles/7371 |
| work_keys_str_mv | AT rmrnkratnayake soilapplicationofpotassiumsilicatereducestheintensityofdownymildewinbittergourdmomordicacharantialleaves AT wamdaundasekera soilapplicationofpotassiumsilicatereducestheintensityofdownymildewinbittergourdmomordicacharantialleaves AT hmariyarathne soilapplicationofpotassiumsilicatereducestheintensityofdownymildewinbittergourdmomordicacharantialleaves AT myuganehenege soilapplicationofpotassiumsilicatereducestheintensityofdownymildewinbittergourdmomordicacharantialleaves |