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Principles of Tissue Culture

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Anther Culture

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A technique where anthers are used to develop haploid plants through tissue culture that can be used for breeding programs.

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Sterile Technique

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Prevention of contamination in tissue culture by using sterile equipment and aseptic procedures.

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Organogenesis

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The process of forming new organs such as roots and shoots from callus or explants.

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Subculturing

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Transfer of cultured tissue to fresh media to provide new nutrients and space for continued growth.

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Contamination Control

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Methods to prevent biological contamination by microbes or foreign DNA in the tissue culture.

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Media Composition

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Nutrient-rich solution containing essential elements for the growth and development of the cultured tissue.

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Genetic Transformation

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The insertion or modification of genes within the cultured tissue to obtain desired traits.

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Temporary Immersion System

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A bioreactor system where plant tissues are intermittently immersed in nutrient medium allowing for efficient nutrient uptake and gas exchange.

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Explant Selection

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Choosing a specific piece of tissue from a plant or animal to culture, which can influence the growth and differentiation of the culture.

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Somatic Embryogenesis

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Development of embryos from somatic or non-germ cells, which can then be used to generate whole plants.

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Photoperiod Control

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Regulating light cycles to simulate day and night, which affects the growth and development of cultures.

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Embryo Rescue

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A technique where immature or weak embryos are cultured to bypass seed dormancy or save hybrids that might not survive on their own.

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Hardening

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Process of gradually acclimatizing tissue-cultured plants to external conditions before transferring them to soil.

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Callus Induction

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The process of inducing undifferentiated cell mass from explant tissues that can be used for plant regeneration or for genetic modifications.

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Micropropagation

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The cloning of plants by culturing a very small amount of tissue, which can produce thousands of plants from a single explant.

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Cryopreservation

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Long-term storage of plant or animal tissue at ultra-low temperatures, typically in liquid nitrogen.

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pH Adjustment

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The regulation of the pH level of the culture medium to an appropriate range for optimal tissue growth and development.

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Nutrient Uptake

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The absorption of essential minerals and vitamins from the culture medium, which are necessary for cell growth and metabolism.

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Plant Hormones

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Chemicals such as auxins, cytokinins, gibberellins used to regulate the growth and development in plant tissue cultures.

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Air Exchange

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Providing adequate airflow and gas exchange to the growing tissues, which is crucial for cellular respiration and photosynthesis.

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