Video Experimental Relacionado

Updated: Jun 21, 2026

Combining Histochemical Staining and Image Analysis to Quantify Starch in the Ovary Primordia of Sweet Cherry during Winter Dormancy
07:25

Combining Histochemical Staining and Image Analysis to Quantify Starch in the Ovary Primordia of Sweet Cherry during Winter Dormancy

Published on: March 20, 2019

Floración inducida en injertos jóvenes de pino loblolly por inactividad fuera de fase

M S Greenwood

    Science (New York, N.Y.)
    |August 4, 1978
    PubMed
    Resumen

    Las condiciones ambientales controladas pueden inducir la floración en los pinos lobolly jóvenes. La disminución de la temperatura y la duración del fotoperíodo desencadenaron con éxito la formación de estructuras reproductivas masculinas y femeninas en estos árboles.

    Más Videos Relacionados

    Forced Flowering in Mandarin Trees under Phytotron Conditions08:42

    Forced Flowering in Mandarin Trees under Phytotron Conditions

    Published on: March 6, 2019

    Inducing the Entry of Third Stage Dispersal Juveniles of Bursaphelenchus xylophilus into Cryptobiosis Through Osmotic Regulation05:15

    Inducing the Entry of Third Stage Dispersal Juveniles of Bursaphelenchus xylophilus into Cryptobiosis Through Osmotic Regulation

    Published on: December 27, 2024

    Videos de Conceptos Relacionados

    Regulation of Transpiration by Stomata02:04

    Regulation of Transpiration by Stomata

    During photosynthesis, plants acquire the necessary carbon dioxide and release the produced oxygen back into the atmosphere. Openings in the epidermis of plant leaves is the site of this exchange of gasses. A single opening is called a stoma—derived from the Greek word for “mouth.” Stomata open and close in response to a variety of environmental cues.
    Pollination and Flower Structure02:40

    Pollination and Flower Structure

    Flowers are the reproductive, seed-producing structures of angiosperms. Typically, flowers consist of sepals, petals, stamens, and carpels. Sepals and petals are the vegetative flower organs. Stamens and carpels are the reproductive organs.
    Seed Structure and Early Development of the Sporophyte02:33

    Seed Structure and Early Development of the Sporophyte

    Seed structures are composed of a protective seed coat surrounding a plant embryo, and a food store for the developing embryo. The embryo contains the precursor tissues for leaves, stem, and roots. The endosperm and cotyledons—seed leaves—act as the food reserves for the growing embryo.
    Biological Clocks and Seasonal Responses02:45

    Biological Clocks and Seasonal Responses

    The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.
    Transgenic Plants02:50

    Transgenic Plants

    Recombinant DNA technology called transgenesis is often used to add a foreign gene or remove a detrimental gene from an organism. Such genetically modified organisms are called transgenic organisms.
    The first-ever transgenic plant was a tobacco plant developed in 1983 that showed resistance against the tobacco mosaic virus. Since then, many transgenic plants have been developed and commercialized for improving the agricultural, ornamental, and horticultural value of a crop plant. Transgenic...
    Gene Regulation During Sporulation01:17

    Gene Regulation During Sporulation

    Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...