eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-01-09 2 2 157 158 3481 article Minakshi Mahajan 1 Department of Botany, Fergusson College, Pune - 4 (India) A large number of seeds of Cassia tora were allowed to germinate at room temperature in petridishes. Seedslings of 14-16mm were treated with various concentration ranging 100 to 1200 ppmof 2,4-D for 24 hours at room temperature. Treated seedlings compared with untreated one. The length of hypocotyls and radicle was measured. It had been concluded that low concentration of 24-D cause abnormalities of growth in plant organs by stimulating the meristematic zones like cortex whereas the higher ones bring about cessation of growth of the root and shot depending upon the concentration. https://www.biotech-asia.org/vol2no2/effect-of-24-d-on-seedling-anatomy-of-cassia-tora-linn/ Seedling anatomy; Cassia tora