Physiology and bio - chemistry of germination of different types of seeds - iv - effect of certain chemicals on growth anddevelopment of cucumber, mungo, paddy, raddish and tomato plants.

The effect of 100 ppm solution of each of kinetin, adenine, uracil and thymine on the vegetative and reproductive growth of Cucumis sativus, phaseolus mungo, Oryza sativus, Raphanus sativus and Lycopersicum esculentum plants were studied. The rate of vegetative growth was found to be more in the Cucumis sativus, Raphanus sativus and Lycopersicum esculentum plants treated with all the chemicals mentioned above over that of the controls. Phaseolus mungo and Oryza sativa plants shows almost the same growth rate with that of the control plants. So far the reproductive phase is concerned, measured as the size of fruit and number of fruit and seed, Cucumis sativus plants produced about same number of fruits in all the treatments but fruit size varied greatly along with the number of seeds in kinetin and adenine treated plants.