SHAH, P. M.PATEL, BALUBHAI D.2018-04-132018-04-131988http://krishikosh.egranth.ac.in/handle/1/5810043437The present investigation was conducted to study tho problem of low germination and subsequent growth of seedlings and to find out an easy method of seed treatment which give fairly high'percentage of germination, subsequent growth and survival percentage of seedlings. One experimental results revealed that mechanical filing with GA 100 ppm during 6 hours soaking of seeds was found to be highly significant in increasing the germination (95.33 per cent) and the next best result with regards to germination (91.33 per cent) was recorded in mechanical filing with GA 200 ppm during 6 hours soaking. Concentrated sulphuric acid treatments for 4 and 8 minutes with or without GA 200 ppm during 6 hours soaking also proved beneficial in breaking the dormancy, but had lees effect than mechanical filing and their combination. Hot water treatments were in no way successful in breaking the dormancy they were proved to be unfavourable for to germination and reduced the germination percentage. However the subsequent growth of seedling, survival percentage, were found maximum in the combination of mechanical filing with GA 200 ppm during 6 hours soaking followed by mechanical filing with GA 100 ppm during 6 hours soaking. The protein content was maximum in root end stem at GA 200 ppm and in leaves GA 100 ppm at first stage whereas the highest peroxidase activity observed at GA 200 ppm in root« 100 ppm in stem and 30 minutes boiling water with GA 100 ppm in leaves at second stage.enHORTICULTURE, AGRICULTUREA STUDYEFFECT OF PRE-SOWING TREATMENTS OF SEEDS ON GERMINATION AND SUBSEQUENT GROWTH OF SEEDLING OF GULMOHUR (DELONIX regia Raf.)Thesis