Prevention and Treatment of Rose Green Petal Disease
This article provides a detailed explanation of the experience with roses and the prevention and treatment of rose green petal disease, with specific content as follows:
The main symptoms of rose green petal disease are narrow, green petals or leaf-like shapes, green crowns, and flowers turning into leaves. Plants affected by this disease are typically dwarfed compared to normal rose varieties under the same cultivation and management conditions. They have abundant lateral branches, narrow leaves, and less red stems and petioles. The flowers are fertile and bloom profusely. The green flowers last until winter, but in the summer heat, the base of the peduncle is prone to abscission layers, and they easily fall off when touched slightly.
Pathogen
This type of mycoplasma-like organism is found in the base of the 'green calyx' leaf-like corolla and the phloem cells of young petioles, appearing elliptical and nodular. After division, the new individuals are mostly spherical, with a diameter of 100-800 nanometers. The current known method of transmission is artificial grafting. Whether there are other transmission routes in nature, such as insects, remains to be investigated.
Control Methods
1. Strengthen quarantine to prevent the introduction of virus-infected seedlings into disease-free areas.
2. Promptly control suspect vectors such as piercing-sucking insects.
3. Use healthy plants as propagation material and promptly remove diseased plants to reduce the spread of the pathogen.
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