Hi I am Shubham welcome to my you tube channel About these vedio Topic- plant harmone and their application Course- B pharmacy Subject- pharmacognosy-l Like animals, plants rely on these chemical signals to direct the expression of DNA and the operations of the cell.Plant hormones are natural substances which control many aspects of plant development. The synthesis of plant hormones is more diffuse and not always localized. Hormone Vitamin 1)The site of synthesis is different from the site of action. The concentration of hormones required for the plant response is very low(10-6 to 10-5M), comparing with the requirement of mineral and vitamin for plants. Plant Growth Hormones 2 3. The following article explains the five different types of these secretions and their functions. Plant hormones regularize the growth of plants. If you continue browsing the site, you agree to the use of cookies on this website. They occur in very small proportions within the plant. They act as co-factor of enzyme. 2)Vitamins by themselves are not physiologically active. 2)Plant hormones are physiologically active. If you continue browsing the site, you agree to the use of cookies on this website. plant hormonespromote cell division: cytokinins Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. It is only in recent year’s plant physiologists discovered how plant hormones can be effectives used in agriculture, horticultures, pomiculture and other related fields. 5. Plant Hormones Definition. Plant hormones (also known as phytohormones) are signal molecules, produced within plants, that occur in extremely low concentrations.Plant hormones control all aspects of plant growth and development, from embryogenesis, the regulation of organ size, pathogen defense, stress tolerance and through to reproductive development. • Chemical messengers that affect a plant's ability to respond to its environment. They occur in very small proportions within the plant. Plant Hormones • Chemicals that regulate plant growth • Signal molecules produced within the plant, and occur in extremely low concentrations. Characteristics 3/2/2014 9 9. Application of Plant Hormones: Agriculturists all over the world have developed certain unusual methods by which they successfully cultivate the crop plants. Plant hormones are chemicals plants use for communication, coordination, and development between their many cells. 3 4. 1)Vitamins are used in the same part without being transported. Plant Hormones, Gravitropism and auxins Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising.

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