MySheen

Symptoms and control of rose green petal disease

Published: 2024-11-22 Author: mysheen
Last Updated: 2024/11/22, Symptoms: mainly manifested as narrow petals, green sepals or leaves, corolla green, flowers into leaves, rose green petal disease is a typical symptom. All the plants with this disease, under the same cultivation and management conditions, the plant type is shorter than the general rose varieties, the branches are multiplied, the leaf shape is narrow, the petiole and stem are more economical.

Symptom petals are thin and narrow, showing green or leaf shape, Corolla turns green and flowers change into leaves, which is a typical symptom of green petal disease of rose. All the plants suffering from this disease, under the same cultivation and management conditions, the plant type is shorter than the general rose varieties, the lateral branches are numerous, the leaf shape is narrow, and the petiole and stem are less red. The flowers are fertile and blossom. Until winter, the green flower lasts for a long time, but when it is hot in summer, the base of the pedicel is easy to form an abscission layer and fall off at a touch. Pathogen MycoPlasma-likeorganisim (mycoplasma-like) this kind of mycoplasma exists in the phloem cells of the "green calyx" leafy Corolla base and young petiole, showing oval and nodular shapes. Most of the new individuals formed after division are globules with a diameter of 100mm and 800nm. At present, it is known that the main way of virus transmission is artificial grafting, and whether there are other mediators such as virus-transmitting insects in nature remains to be investigated. Prevention and control methods 1. Strengthen quarantine to prevent seedlings with virus from being brought into disease-free areas. 2. Timely control of suspicious transmission media such as piercing and suction pests. 3. Use disease-free plants as propagation materials to remove diseased plants in time so as to reduce the source of spreading bacteria.

 
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