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Synopsis Plant physiology and biotechnology have made enormous progress at an astonishing pace in the recent past and have aroused unparalleled public interest. This book includes 21 articles and review papers in the area of stress physiology, plant tissue culture, plant growth regulators, senescence, seed deterioration, isolation and molecular characterisation of diazotrophs, lectins and biochemistry and molecular aspects of aflatoxins biosynthesis. A major section deals with the role of plant growth regulators in crop productivity, improvement of oil quality and quantity, complementary effects of CaC12 and ABA in cotton fibre growth; brassinosteriods as novel group of plant hormones, and information on nitric oxide as regulator and signalling molecule in plants. Compatible solutes as stress protectants, factors affecting salt tolerance, water logging tolerance under neutral and alkali soils, physiology of anaerobosis stress and ameliorating different stresses, etc. provide information on stress physiology. An excellent treatise comprehends latest information on plant senescence processes pertinent to productivity. One chapter discusses plant lectins--a special class of proteins with diversified functions. Micropropagation of very important economic plant species tea, production of withanolides from W. Somniferum and application of plant tissue culture in preservation of economically important plant species, in-depth study of rhizome physiology in bamboo at various stages of development provide necessary information using tissue culture technique. The article on seed deterioration describes various characters affected by natural and artificial ageing. The review on aflatoxins, secondary metabolite discusses various aspects of its biochemistry, molecular biology of its biosynthesis. An article on micro array and its application have added to the value of the book. This is a must for all science libraries catering to the requirements of post-graduate and doctoral students and teachers engaged in biotechnology, physiology and plant sciences studies.