Plantago ovata (Isabgol), the important drug is grown principally for its seed husk valued for medicinal properties. Its seeds are used in catarrh, chronic constipation, amoebic and bacillary dysentery and diarrhea, intestinal flexes, discharge of mucus, affection of bladder, urethra and kidneys and functional derangement of digestive organ. At present there is no such book in the market that covers the investigatory aspects about cytological studies & effects of mutagens on this plant which can be used as a study material for scientists.This book provides the investigatory information about the mitosis & karyotype, meiosis, effect of physical & chemical mutagens in alone and combination treatments on mitotic index, mitotic abnormalities, meiotic abnormalities and chromosomal aberrations. This indispensable source book would be helpful for those who are working for the cytological studies of "imphagul", mainly the scientists in Agriculture, Horticulture, Genetics & Plant Breeding and all others who are curious for the cytogenetic studies of this plant.The results mentioned here are the conclusions made by the authors which may vary in different geographic & climatic conditions.