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EI-Mazaty,, M. (2004). DETECTION OF PETUNIA PHYTOPLASMA IN ELMANSOURA - DAKAHLIA, EGYPT. Journal of Plant Production, 29(5), 2513-2519. doi: 10.21608/jpp.2004.238635
M. A. EI-Mazaty,. "DETECTION OF PETUNIA PHYTOPLASMA IN ELMANSOURA - DAKAHLIA, EGYPT". Journal of Plant Production, 29, 5, 2004, 2513-2519. doi: 10.21608/jpp.2004.238635
EI-Mazaty,, M. (2004). 'DETECTION OF PETUNIA PHYTOPLASMA IN ELMANSOURA - DAKAHLIA, EGYPT', Journal of Plant Production, 29(5), pp. 2513-2519. doi: 10.21608/jpp.2004.238635
EI-Mazaty,, M. DETECTION OF PETUNIA PHYTOPLASMA IN ELMANSOURA - DAKAHLIA, EGYPT. Journal of Plant Production, 2004; 29(5): 2513-2519. doi: 10.21608/jpp.2004.238635

DETECTION OF PETUNIA PHYTOPLASMA IN ELMANSOURA - DAKAHLIA, EGYPT

Article 10, Volume 29, Issue 5, May 2004, Page 2513-2519  XML PDF (393.75 K)
Document Type: Original Article
DOI: 10.21608/jpp.2004.238635
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Author
M. A. EI-Mazaty,
Plant Pathology Department, Faculty of Agric., EJ-Mansoura Univ., Egypt.
Abstract
Phytoplasma like symptoms. foliar yellowing. witches' broom and phyllody
were observed on diseased petunia hybrid vilm. In the gardens of EI-Mansoura
University. Egypt.
Grafting had been succeeded in transmitting the causal agent but not by
infectious crud sap inoculation or by the aphid Myzus persice«. Light microscopy of
dienes stained free hand section revealed staining of cambium with blue colore.
Electron microscopy study confirmed the presence of phytoplasma in phloeim of
diseased petunia flower petioles. Phytoplasm bodies were pleomorphic and they were
not found in phloeim of healthy plants.
Results showed that spraying diseased petunia twice with oxytetracycline (200
ppm) caused disease recovery.
Keywords
Phytoplasma; petunia; symptoms; detection; dienes' staining; histology and Electron microscopy
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