159x Filetype PPT File size 0.57 MB Source: www.geethanjaliinstitutions.com
OBJECTIVES OF PLANT TISSUE CULTURE If by seed : - Cant obtain a uniform planting material - Due to seed contains pool of genes Mass propagation of uniform planting material -Phenotipycally and genotypically the same. A lot of plants produces -Tissues are taken from any parts of plants such as leaves, roots, and stems Apical bud do not contain Disease-resistant plants any viral or bacterial infection yet. Therefore, -differ from embryo cultured - this part was taken and If a plant were to cross between cultures and DR plants can unfavorable plant, the embryo form will be be obtained. aborted and the seed will drop and eventually died. -Therefore, we harvest the embryo before Embryo-rescue it matures into seed, and cultures them using TC technique. Some plant aren’t clean Safe transfer of germplasm across from pathogen or plant’s diseases that will international borders affecting other countries’ plant industries. - No genetic transformation without TC. To facilitate genetic transformation - We cant introduce gene into plants without TC. TOTIPOTENCY Property of plant cells The ability of somatic cells of certain plants to undergo embryogenesis / or plantlet regeneration Production and development of embryoids (derived from somatic cells) Embryos derived from gamete fusion (molecular processes in later stages of development may be identical, e.g. temporal and spatial expression patterns of proteins in somatic and zygotic embryos) EQUIPMENTS FOR TISSUE CULTURE - Distilled water - Ultra pure water AB = unit in mg(3-4 Deionizer decimal places) TLB = unit in g or kg Analytical Balance pH medium normally around 5.8 Top Loading Balance pH Meter - Both give sterility Heat Label – Substance - Autoclave uses temperature(121C) that is sensitive to heat, and pressure (15lb/sg@mmBar) thus Autoclave cannot - FS employed a membrane which is be applied and this is made from cellulose acetate @ where FS is taking Filter-Sterilizer nylon which has a membrane size of 0.22-0.45micrometer. places. -Sterile chamber to cut a part Autoclave of plant in order to obtain ex- plant. -The air in this chamber is filtered by membrane cellulose acetate and clean air is Laminar Flow Chamber released to our front side Control the condition of favor. Incubators -Established the plant from sterile condition, so that it can adept with the natural condition. -Also known as Acclimatization processes. Plant Growth Chambers BASIS OF TISSUE CULTURE Preparation Sterilization Manipulation of Media of Explant of Tissues Growth of tissues Storage Transfer Regeneration (Cryo preservation) to soil of plants PRINCIPAL METHODS OF MICROPROPAGATION
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