The present study on the structure and behaviour of vascular cambium and its derivative tissues- the food conducting (secondary phloem) and the water conducting (secondary xylem) pathways has been undertaken in relation to different weather conditions of the study site and age of the selected trees (Anthocephalus cadamba and Madhuca indica) for three consecutive years (2005, 2006 & 2007). The plant A. cadamba (Common bur-flower) belongs to family Rubiaceae is a large tree with a broad crown and straight cylindrical bole. It is found in moist, warm type of deciduous and evergreen forests. On...

The district of Aligarh spreads from 27º88'N latitude to 78º08'E longitude at an elevation of 178m. The greatest width from west to east is about 116km and the maximum length from north to south is about 72km and forms part of the fertile Ganga-Yamuna Doab . The district spreads over 4023 square kilometers and this area varies slightly from year to year due to the changing courses of river Ganga and Yamuna. The level of surface is interrupted by the several depressions, Jhils, canals, nadi (river) and some drainage lines. Aligarh district experiences tropical monsoon climate characterized...