02 Oca 2025 Perşembe
Structural changes in jute plant for yellow mite (Polyphagotarsonemus latus) infestation
Abstract :The jute yellow mite, Polyphagotarsonemus latus constitutes one of the major pests of jute crop in Bangladesh. The objective of this work was to study some morphological and histological changes of mite infested jute plant leaves. Leaves and top shoot samples were collected from jute plants of different rating scales and examined under microscope for the morphological difference. Based on rating scale, leaf and top shoot, samples were collected, preserved, sectioned and examined under compound microscope (4 X 10 magnifications). In the rating scale 4 showed a massive damage of leaves through leaf dropping resulting in bare shoot and shortening of internodes. Infestation rating scale 5 showed a massive damage of the shoot causing the death of the top growing part of the jute plants. Rating scale 2 showed more lesion and necrotic areas of leaf epidermis and spongy parenchyma. There occurred a massive damage of leaves especially in the abaxial epidermal and subepidermal tissues in the rating scale 3. Internal structure i.e. transverse section (TS) of shoot tip showed infested area in the cortex. Mite infestation was higher in lower surface than upper surface of the jute leaf. Infestation showed a massive damage of the shoot causing the death of the top growing part of the jute plants and massive damage of leaves especially in the abaxial epidermal and subepidermal tissues. Transverse section of shoot tip showed infested area in the cortex.
Coloration, internodes, mesophyll, chlorophyll, necrosis, cortex, jute, yellow mite