LG - AgriSETA
... All plants such as pine trees, tomatoes and even maize all look different from one another, but they are made of similar cells and tissues. Plant cells are microscopic sized structures that contain various smaller organs known as organelles that enable growth processes to occur. Cells may vary in si ...
... All plants such as pine trees, tomatoes and even maize all look different from one another, but they are made of similar cells and tissues. Plant cells are microscopic sized structures that contain various smaller organs known as organelles that enable growth processes to occur. Cells may vary in si ...
Plant Tissue Culture Techniques
... 1. Outside the laminar flow hood: Place several (5 to 10) tomato or lettuce seeds in a small petri dish. Fill the petri dish with a 7% chlorox solution to which a drop of wetting agent has been added. The soapy chlorox solution is usually a good surface sterilant. Swirl the seeds intermittently duri ...
... 1. Outside the laminar flow hood: Place several (5 to 10) tomato or lettuce seeds in a small petri dish. Fill the petri dish with a 7% chlorox solution to which a drop of wetting agent has been added. The soapy chlorox solution is usually a good surface sterilant. Swirl the seeds intermittently duri ...
Flowers - Missouri State University
... Major leaf veins reticulated Stem vascular bundles in a ring Roots develop From radicle ...
... Major leaf veins reticulated Stem vascular bundles in a ring Roots develop From radicle ...
Plants in Space
... of legumes (beans, peanuts and their relatives), house bacteria that take in nitrogen from air and make it available in a different chemical form for use by the host plant. A plant’s first root, usually called the primary root, originates with the embryo. In dicots and gymnosperms (pine trees and ...
... of legumes (beans, peanuts and their relatives), house bacteria that take in nitrogen from air and make it available in a different chemical form for use by the host plant. A plant’s first root, usually called the primary root, originates with the embryo. In dicots and gymnosperms (pine trees and ...
Plant Tumorigenesis: Different Ways for Shifting Systemic Control of
... The second level of plant cell division control is based on the specific plant body organization. During post-embryonic development of plants most of the mitotic activity is restricted to specific meristematic zones which are a source for different organ primordia. Shoot and root apical meristems (S ...
... The second level of plant cell division control is based on the specific plant body organization. During post-embryonic development of plants most of the mitotic activity is restricted to specific meristematic zones which are a source for different organ primordia. Shoot and root apical meristems (S ...
The Evolution of Plant Body Plans
... features. These and other criteria support the generally held view that each algal lineage traces its ancestry back to a unicellular ancestral organism, that colonial and multicellular life forms have evolved independently many times, that the land plants (embryophytes) and the charophycean algae sh ...
... features. These and other criteria support the generally held view that each algal lineage traces its ancestry back to a unicellular ancestral organism, that colonial and multicellular life forms have evolved independently many times, that the land plants (embryophytes) and the charophycean algae sh ...
Plant Pathology Glossary
... smut sorus filled, with teliospores, that replaces a cereal or grass kernel but is covered by plant tissue at maturity ...
... smut sorus filled, with teliospores, that replaces a cereal or grass kernel but is covered by plant tissue at maturity ...
The role of auxin in shaping shoot architecture
... development, new phytomers are formed with elongated stems, smaller leaves (cauline leaves), and indeterminate axillary meristems that originate new lateral branches. These events are subsequently followed by phytomers with no visible leaves, elongated stems, and floral meristems, determinate axilla ...
... development, new phytomers are formed with elongated stems, smaller leaves (cauline leaves), and indeterminate axillary meristems that originate new lateral branches. These events are subsequently followed by phytomers with no visible leaves, elongated stems, and floral meristems, determinate axilla ...
Scotch Thisle - Jordan Valley
... erect, up to 8 ft. tall. Rosette forms first year, flowering stem elongates second year. Flowers: Flowers are arranged in heads up to 2 inches in diameter, generally with one head per branch, but can range from 2 to 7 heads, with flower color ranging from white to purple. The stems and flower heads ...
... erect, up to 8 ft. tall. Rosette forms first year, flowering stem elongates second year. Flowers: Flowers are arranged in heads up to 2 inches in diameter, generally with one head per branch, but can range from 2 to 7 heads, with flower color ranging from white to purple. The stems and flower heads ...
PDF
... Faced with climate change one way of adaptation is to reach into the genetic resource of the so-called miner crops. These crops are thought to be more resilient to climate change while being more nutritious than the modern vegetables. It is vital to characterise these crops in order to gather inform ...
... Faced with climate change one way of adaptation is to reach into the genetic resource of the so-called miner crops. These crops are thought to be more resilient to climate change while being more nutritious than the modern vegetables. It is vital to characterise these crops in order to gather inform ...
Great Burdock (Arctium lappa)
... Great Burdock (Arctium lappa) Description Greater Burdock is rather tall biennial, reaching as much as 3 m. The fleshy tap-root can grow up to 1m long. It has large (up to 80 cm) alternating, heart shaped leaves that have a long petiole, very wavy margins and are pubescent on the underside. Basal le ...
... Great Burdock (Arctium lappa) Description Greater Burdock is rather tall biennial, reaching as much as 3 m. The fleshy tap-root can grow up to 1m long. It has large (up to 80 cm) alternating, heart shaped leaves that have a long petiole, very wavy margins and are pubescent on the underside. Basal le ...
Systematic Implications of DNA variation in subfamily
... Xylem – most with vessels (evolved within angiosperms) Phloem – sieve tube members with 1 or more companion cells derived from the same mother cell ...
... Xylem – most with vessels (evolved within angiosperms) Phloem – sieve tube members with 1 or more companion cells derived from the same mother cell ...
SND1, a NAC Domain Transcription Factor, Is a Key Regulator of
... are unknown, they provide useful tools to dissect the molecular mechanisms controlling the complex process of xylem development, including the initiation of differentiation, cell elongation, secondary wall thickening, and programmed cell death. Noteworthy among these xylem- or secondary growth–assoc ...
... are unknown, they provide useful tools to dissect the molecular mechanisms controlling the complex process of xylem development, including the initiation of differentiation, cell elongation, secondary wall thickening, and programmed cell death. Noteworthy among these xylem- or secondary growth–assoc ...
9. Leaves - New Zealand Plant Conservation Network
... Leaf vein pattern (venation/veination) Leaves usually have some pattern on them in the form of a venation. This may be parallel or like a net (see below). Venation can also affect the surface appearance or texture—whether veins are raised or sunk for instance. The main central vein or midrib maybe ...
... Leaf vein pattern (venation/veination) Leaves usually have some pattern on them in the form of a venation. This may be parallel or like a net (see below). Venation can also affect the surface appearance or texture—whether veins are raised or sunk for instance. The main central vein or midrib maybe ...
IJBT 5(2) 246-248
... L-I NAA was used. In this medium the callus doubled in size every 15 d with routine subcultures. Callus was found to be big, friable and white-pale green in colour. When nodal explants were grown in medium supplemented with low concentrations of NAA (1.0 mg L-') and BAP (0.1 mg L-'), they produced c ...
... L-I NAA was used. In this medium the callus doubled in size every 15 d with routine subcultures. Callus was found to be big, friable and white-pale green in colour. When nodal explants were grown in medium supplemented with low concentrations of NAA (1.0 mg L-') and BAP (0.1 mg L-'), they produced c ...
Spathyema foetida - International Aroid Society
... the seed may undergo drying and still retain its power to develop, or how long it may remain inactive yet viable with a minimum requirement of moisture to prevent shriveling. The young plant shown still attached to the seed in fig. 2 is thought to be a one-year old plant. At this stage of developmen ...
... the seed may undergo drying and still retain its power to develop, or how long it may remain inactive yet viable with a minimum requirement of moisture to prevent shriveling. The young plant shown still attached to the seed in fig. 2 is thought to be a one-year old plant. At this stage of developmen ...
propagation and nursery management
... method is very easy and fast. This method saves budwood as compared to grafting. As soon as the bark starts slipping both on the stock and scion, this is considered to be the optimum time for budding. This shows that the cambium, which is the tissue responsible for union, is active. This method is g ...
... method is very easy and fast. This method saves budwood as compared to grafting. As soon as the bark starts slipping both on the stock and scion, this is considered to be the optimum time for budding. This shows that the cambium, which is the tissue responsible for union, is active. This method is g ...
HAWAIIAN SKIRT - Plant Physiology
... inability to shed its floral organs, during a screen of M2 progeny grown from a fast neutron-mutagenized population (dose: 55 Gy; Lehle seeds) of M1 Arabidopsis seeds in the Col-0 (wild type) background. Sepals, petals, and anther filaments were retained throughout reproductive development and remai ...
... inability to shed its floral organs, during a screen of M2 progeny grown from a fast neutron-mutagenized population (dose: 55 Gy; Lehle seeds) of M1 Arabidopsis seeds in the Col-0 (wild type) background. Sepals, petals, and anther filaments were retained throughout reproductive development and remai ...
An Oryzalin-induced Autoallooctoploid of Hibiscus acetosella
... yellow, are formed in the axils (van Borssum Waalkes, 1966). A number of selections have been released over the years, including a recent release from The University of Georgia, known as H. acetosella ‘Panama Red’ PP20,121. This release has generated interest in the green industry due to its attract ...
... yellow, are formed in the axils (van Borssum Waalkes, 1966). A number of selections have been released over the years, including a recent release from The University of Georgia, known as H. acetosella ‘Panama Red’ PP20,121. This release has generated interest in the green industry due to its attract ...
Microscopy, Monera, and Protista
... Sessile (attached) organisms are usually radially symmetric. Radial symmetry means the animal can be folded along any plane into mirror image halves. Like a wagon wheel. Bilateral symmetry means that there is only one plane that can divide the organism into mirrored halves, like a wagon. The Phylum ...
... Sessile (attached) organisms are usually radially symmetric. Radial symmetry means the animal can be folded along any plane into mirror image halves. Like a wagon wheel. Bilateral symmetry means that there is only one plane that can divide the organism into mirrored halves, like a wagon. The Phylum ...
2014 MG Core Course Plant Structure and Function
... flowering plants) can be further classified as either monocotyledonous or dicotyledonous plants. This is yet another botanical classification that helps with the identification of plants and provides some general information about the members of these groups. Monocotyledonous plants, abbreviated as ...
... flowering plants) can be further classified as either monocotyledonous or dicotyledonous plants. This is yet another botanical classification that helps with the identification of plants and provides some general information about the members of these groups. Monocotyledonous plants, abbreviated as ...
Flower Morphology - Home Page for Ross Koning
... Although in gross appearance, the flowers of the angiosperms show a tremendous diversity, the parts which make up the flower are basically the same throughout. The most widely accepted interpretation of the nature of the flower is that it is a specialized branch; a stem with leaves. The flower has m ...
... Although in gross appearance, the flowers of the angiosperms show a tremendous diversity, the parts which make up the flower are basically the same throughout. The most widely accepted interpretation of the nature of the flower is that it is a specialized branch; a stem with leaves. The flower has m ...
Engler Araceae system 1876_0
... systematic value of individual characters. It is an even more deep-rooted axiom that the floral parts alone have systematic importance and that the nature of the leaves, leaf arrangement and shoot architecture as well as the anatomical structure of individual organs are of a much lesser degree of im ...
... systematic value of individual characters. It is an even more deep-rooted axiom that the floral parts alone have systematic importance and that the nature of the leaves, leaf arrangement and shoot architecture as well as the anatomical structure of individual organs are of a much lesser degree of im ...
Gastrulation COO
... Cells that move through Hensen’s node migrate anteriorly. They form the “anlage” of the foregut, head-mesoderm and the notochord. Cells that move through the primitive streak form the majority of the endoderm and mesoderm. The presumptive endodermal cells move deeper than the presumptive mesodermal ...
... Cells that move through Hensen’s node migrate anteriorly. They form the “anlage” of the foregut, head-mesoderm and the notochord. Cells that move through the primitive streak form the majority of the endoderm and mesoderm. The presumptive endodermal cells move deeper than the presumptive mesodermal ...
Biology
... first plant hormone. They described an experiment in which oat seedlings demonstrated a response known as phototropism—the tendency of a plant to grow toward a source of light. Slide 23 of 32 Copyright Pearson Prentice Hall ...
... first plant hormone. They described an experiment in which oat seedlings demonstrated a response known as phototropism—the tendency of a plant to grow toward a source of light. Slide 23 of 32 Copyright Pearson Prentice Hall ...
Meristem
A meristem is the tissue in most plants containing undifferentiated cells (meristematic cells), found in zones of the plant where growth can take place.Meristematic cells give rise to various organs of the plant and keep the plant growing. The shoot apical meristem (SAM) gives rise to organs like the leaves and flowers, while the root apical meristem (RAM) provides the meristematic cells for the future root growth. SAM and RAM cells divide rapidly and are considered indeterminate, in that they do not possess any defined end status. In that sense, the meristematic cells are frequently compared to the stem cells in animals, which have an analogous behavior and function.The term meristem was first used in 1858 by Karl Wilhelm von Nägeli (1817–1891) in his book Beiträge zur Wissenschaftlichen Botanik. It is derived from the Greek word merizein (μερίζειν), meaning to divide, in recognition of its inherent function.In general, differentiated plant cells cannot divide or produce cells of a different type. Therefore, cell division in the meristem is required to provide new cells for expansion and differentiation of tissues and initiation of new organs, providing the basic structure of the plant body.Meristematic cells are incompletely or not at all differentiated, and are capable of continued cellular division (youthful). Furthermore, the cells are small and protoplasm fills the cell completely. The vacuoles are extremely small. The cytoplasm does not contain differentiated plastids (chloroplasts or chromoplasts), although they are present in rudimentary form (proplastids). Meristematic cells are packed closely together without intercellular cavities. The cell wall is a very thin primary cell wall.Maintenance of the cells requires a balance between two antagonistic processes: organ initiation and stem cell population renewal.Apical meristems are the completely undifferentiated (indeterminate) meristems in a plant. These differentiate into three kinds of primary meristems. The primary meristems in turn produce the two secondary meristem types. These secondary meristems are also known as lateral meristems because they are involved in lateral growth.At the meristem summit, there is a small group of slowly dividing cells, which is commonly called the central zone. Cells of this zone have a stem cell function and are essential for meristem maintenance. The proliferation and growth rates at the meristem summit usually differ considerably from those at the periphery.Meristems also are induced in the roots of legumes such as soybean, Lotus japonicus, pea, and Medicago truncatula after infection with soil bacteria commonly called Rhizobium. Cells of the inner or outer cortex in the so-called ""window of nodulation"" just behind the developing root tip are induced to divide. The critical signal substance is the lipo-oligosaccharide Nod-factor, decorated with side groups to allow specificity of interaction. The Nod factor receptor proteins NFR1 and NFR5 were cloned from several legumes including Lotus japonicus, Medicago truncatula and soybean (Glycine max). Regulation of nodule meristems utilizes long distance regulation commonly called ""Autoregulation of Nodulation"" (AON). This process involves a leaf-vascular tissue located LRR receptor kinases (LjHAR1, GmNARK and MtSUNN), CLE peptide signalling, and KAPP interaction, similar to that seen in the CLV1,2,3 system. LjKLAVIER also exhibits a nodule regulation phenotype though it is not yet known how this relates to the other AON receptor kinases.