Please help keeping these websites open for everybody as long as possible This disease first appeared in the coastal areas of Thanjavur district of TamilNadu after cyclones of 6957 and 6955 and hence the names Thanjavur wilt. In Tamil Nadu it is prevalent in Thanjavur and Chengulpet districts. In Karnataka it is found in Maidan areas. This disease is of recent occurrence in many parts of Kerala, especially in the districts of Palakkad, Malappuram, Thrissur, Kollam, Thiruvananthapuram and Wayanad. Causal Organism: Phytoplasma.
International Union for the Protection of New Varieties of
The disease is transmitted by lace bug Stephanitis typica and the plant hopper Proutista moesta. ) Griffon and Maubl. Is an emerging serious problem in Pollachi tract of Tamil Nadu. At present, the disease is spreading at a faster rate in Coimbatore, Erode, Dindigul, Tirunelveli, Kanyakumari and other districts of Tamil Nadu and causing 65 – 75 per cent yield loss. Characterized by emergence of shorter leaves with fascinated and crinkled leaves.
In many cases, it gives a choked appearance to the frond. Morphology (Gr. Morphos = Form logos = Study) is the branch of science which deals with the study of form and structure. In botany, it generally means the study of external features, forms and relative positions of different organs on plants. Angiospermic or flowering plants show a great variety of shape, size and form.
Physiology of Flowering GRKRaj Org
6 cm ) to the tall Eucalyptus (up to 655 metre ) and large sized Banyan ( Ficus bengalensis ). The root is usually an underground part of the plant which helps in fixation and absorption of water. The root with its branches is known as the root system. (i) The root is the descending portion of the plant axis and is positively geotropic. (vii) Lateral roots arise from the root which are endogenous in origin (arises from pericycle).
7 Motorsports with object Turn (a corner) very close to the edge of the track. A system of reduced fares for scheduled airline flights and railway journeys which must be booked and paid for before a certain period in advance of departure.