The slit between the leaves contains the meristem and produces flowers and new leaves. The leaves of Lithops are mostly buried ... In spring the old leaf pair parts to reveal the new leaves and the old leaves will then dry up. Lithops leaves may shrink and ... Yellow or white flowers emerge from the fissure between the leaves after the new leaf pair has fully matured, one per leaf pair ... Blooms emerge between the leaves in autumn. Lithops sp. Some species have flowers large enough to obscure the leaves. They open ...

Plants produce both leaf and flower primordia cells at the shoot apical meristem (SAM). Primordium development in plants is ... Leaf primordia are groups of cells that will form into new leaves. These new leaves form near the top of the shoot and resemble ... Primordia are initiated by local cell division and enlargement on the shoot apical meristem. At least in wheat plants, leaf ... Cells are recruited from the flanks of the shoot apical meristem which initiates the development of leaf primordia. Signals ...

While most infected shoots produce leaves that are fully affected by the fungus, leaves can be locally infected. E. camelliae ... Besides the leaf, hyphae are also present in the cortex and the apical meristem of infected shoots. These projections cause the ... Macroscopically, the infection turns the host's leaves a light green shade and causes a thickening of the host's leaves up to ... Inside the leaf, the cells are undifferentiated and disorderly. These effects may be caused by the fungus' production of ...

They may develop on roots or leaves, or on shoots as a new growth. Shoot apical meristems produce one or more axillary or ... The form of leaves produced near the base of the branch differs from leaves produced at the tip of the plant, and this ... In addition, leaves produced during early growth tend to be larger, thinner, and more irregular than leaves on the adult plant ... New roots grow from root meristems located at the tip of the root, and new stems and leaves grow from shoot meristems located ...

The raceme is derived from the apical meristem, and a flowered shoot will no longer produce new leaves. Unlike plants such as ... These include thick, succulent leaves for storing water and thick leaf cuticles for reducing moisture loss. These leaves may be ... a bloomed shoot will simply cease to produce new leaves. The flowered shoot continues to grow by producing plantlets via its ... In Africa, the leaves of former Sansevieria species are used for fiber production; in some species, e.g. Dracaena hanningtonii ...

The leaves are scales with reduced photosynthetic activity. Small flowers are produced in spring in the axils of the leaves on ... Growth is sympodial, a growth pattern in which the apical meristem terminates and growth continues by lateral meristems. ...

... s are produced in the leaves, and act in the shoot apical meristem of buds and growing tips. For a plant to begin ... However, more recent findings indicate that florigen does exist and is produced, or at least activated, in the leaves of the ... It was found though the use of transgenic plants that the Hd3a promoter in rice is located in the phloem of the leaf along with ... Huang T, Böhlenius H, Eriksson S, Parcy F, Nilsson O (September 2005). "The mRNA of the Arabidopsis gene FT moves from leaf to ...

The last leaf produced by a wheat plant is known as the flag leaf. It is denser and has a higher photosynthetic rate than other ... Leaves emerge from the shoot apical meristem in a telescoping fashion until the transition to reproduction i.e. flowering. ... Leaf- and head- blight diseases: Powdery mildew, leaf rust, Septoria tritici leaf blotch, Stagonospora (Septoria) nodorum leaf ... Farmers benefit from knowing when the 'flag leaf' (last leaf) appears, as this leaf represents about 75% of photosynthesis ...

The plant's apical meristem produces a rosette of pinnate leaves, each with several pairs of leaflets with toothed margins. The ... In its first growing season, the plant has a rosette of pinnate, mid-green leaves. If unharvested, it produces a flowering stem ... lower leaves have short stems, the upper ones are stemless, and the terminal leaves have three lobes. The leaves are once- or ... and the crinkling of the leaves in infected plants.: 233 The shoots and leaves of parsnip must be handled with care, as its sap ...

For example, the hormone auxin is produced mainly at the tips of young leaves and in the shoot apical meristem. The lack of ... Hormone producing cells are found in the endocrine glands, such as the thyroid gland, ovaries, and testes. Exocytosis and other ... They are produced by endocrine cells that receive input from neurons, or neuroendocrine cells. Both classic hormones and ... Hormones are ligands, which are any kinds of molecules that produce a signal by binding to a receptor site on a protein. ...

... inhibited by auxin produced by the apical meristem, which is known as apical dominance. If the apical meristem is removed, or ... As the apical meristem grows and forms leaves, a region of meristematic cells is left behind at the node between the stem and ... Apical dominance occurs because the shoot apical meristem produces auxin which prevents axillary buds from growing. The ... The axillary bud (or lateral bud) is an embryonic or organogenic shoot located in the axil of a leaf. Each bud has the ...

... unless their terminal meristems are damaged. This species produces a small rosette of pointed reddish-green leaves and erects a ... The leaves are shaped oblong-obovate, with the tip short-acuminate to mucronate. The leaf blades measure 3-7 cm (1.2-2.8 in) ... Each of the rosettes may be 1-10 cm (0.39-3.94 in) wide, and have 15 to 30 leaves. The leaves are evergreen, not glaucous, and ... D. edulis is the type species of subgenus Stylophyllum, whose name refers to the pencil-shaped leaves of D. edulis and its ...

If the apical meristem is damaged, multiple heads may be produced or the plant may die. The larvae from a single egg cluster ... At first, they feed only on the undersides of the leaves. Later they feed on the rest of the leaves and the central shoot. The ... The young larvae feed on the underside of the leaf on which they hatch before moving on to other parts of the plant. They pass ...

After the growth period, when the meristems are dormant, the leaves are sources, and storage organs are sinks. Developing seed- ... The mechanisms are as follows: Glucose is produced by photosynthesis in the mesophyll cells of green leaves. Some glucose is ... A sugar source is any part of the plant that is producing or releasing sugar. During the plant's growth period, usually during ... Water moves by osmosis from the nearby xylem in the same leaf vein. This increases the hydrostatic pressure of the sieve tube ...

In the shoot, the shoot apical meristems regularly produce new lateral organs (leaves or flowers) and lateral branches. In the ...

Subsequently, two foliage leaves are produced at the edge of a woody bilobed crown. The permanent leaves are opposite (at right ... Shortly after the appearance of the foliage leaves, the apical meristem dies and meristematic activity is transferred to the ... The two (rarely three) foliage leaves are parallel veined, and grow continuously from a basal meristem around the circumference ... Because Welwitschia only produces a single pair of foliage leaves, the plant was thought by some to be neotenic, consisting ...

... a young plant will only produce phytomers at its apical meristems but later in development, secondary meristems will begin to ... which is the rate of leaf primordia initiation. Since many more leaf primordia are initiated than leaves develop, the ... Phytomers are functional units of a plant, continually produced by root and shoot meristems throughout a plant's vegetative ... Increases in a phytomer can be measured using the rate of phyllochron (rate of appearance of leaves on a shoot). Related to the ...

These meristems are then divided and further grown and multiplied. To produce plantlets the meristems are taken of from their ... There are many methods of plant micro propagation In Meristem culture, the meristem and a few subtending leaf primordia are ... It is useful in multiplying plants which produce seeds in uneconomical amounts, or when plants are sterile and do not produce ... Micropropagation can be used to produce disease-free plants. It can have an extraordinarily high fecundity rate, producing ...

The primary meristems in turn produce the two secondary meristem types. These secondary meristems are also known as lateral ... There are two types of apical meristem tissue: shoot apical meristem (SAM), which gives rise to organs like the leaves and ... the shoot apical meristem is transformed into an inflorescence meristem, which goes on to produce the floral meristem, which ... Unlike the shoot apical meristem, the root apical meristem produces cells in two dimensions. It harbors two pools of stem cells ...

Leaf abscission is initiated by the growing point of a plant ceasing to produce auxins. Auxins in seeds regulate specific ... It mediates changes within the apical meristem, causing bud dormancy and the alteration of the last set of leaves into ... This class of PGR is composed of one chemical compound normally produced in the leaves of plants, originating from chloroplasts ... As plants begin to produce shoots with fully functional leaves, ABA levels begin to increase again, slowing down cellular ...

Buds also form in the axils of the leaves ready to produce new side shoots. A few trees, such as the eucalyptus, have "naked ... have no buds but instead have little pockets of meristem concealed among the scale-like leaves. When growing conditions improve ... Before the period of dormancy, the last few leaves produced at the tip of a twig form scales. These are thick, small and ... Individual leaves may fall intermittently and be replaced by new growth but most leaves remain intact for some time. Other ...

Flower development begins when the flat meristem changes from producing leaves to an uplifted, conical meristem capable of ... The first true leaf appears about 10-15 days after germination. Subsequent leaves are alternate (with a single leaf attached to ... In the first year, its rosette of leaves produces large amounts of sugars, which are stored in the taproot to provide energy ... The most devastating carrot disease is Alternaria leaf blight, which has been known to eradicate entire crops. A bacterial leaf ...

On fine bladed grasses, the lesions usually girdle the leaf blade. Early in the day or in periods of extended dew, cobweb-like ... There is evidence that a fungal mycotoxin produced by the pathogen may cause root damage, including necrosis of the apical ... meristem in creeping bentgrass (Agrostis stolonifera). However, the importance of this toxin is unknown and its effects are not ... By minimizing leaf wetness via sound irrigation practices, the environment becomes less favorable for the pathogen to infect. ...

It is absorbed through the leaves and is translocated to the meristems of the plant. Uncontrolled, unsustainable growth ensues ... Alternatively, it is produced by the chlorination of phenoxyacetic acid. The production processes may create several ... It has been used since 1945 to control broad-leafed weeds in pastures, orchards, and cereal crops such as corn, oats, rice, and ... 2,4-D is manufactured from chloroacetic acid and 2,4-dichlorophenol, which is itself produced by chlorination of phenol. ...

... and meristems. This invaluable breakthrough immediately spurred Monsanto to design and produce plants genetically immune to ... Glyphosate works by absorption through leaves, and then moving rapidly to a plant's roots, rhizomes, ... Process for producing N-phosphonomethy glycine Patent Number: 4735649, Gametocides Patent Number: 4634788, Herbicidal ... and other processes required to produce the chemical. His patents include: Patent Number: 3799758, Phytotoxicant compositions ...

Meristems (centers of stem cell activity) develop during the torpedo stage, and will eventually produce many of the mature ... Once the embryo begins to germinate (grow out from the seed) and forms its first true leaf, it is called a seedling or plantlet ... Plants that produce spores instead of seeds, like bryophytes and ferns, also produce embryos. In these plants, the embryo ... The resulting fusion of these two cells produces a single-celled zygote that undergoes many cell divisions that produce cells ...

Meristem tissue makes the process of asexual reproduction possible. It is normally found in stems, leaves, and tips of stems ... It can happen through the use of vegetative parts of the plants, such as leaves, stems, and roots to produce new plants or ... Plantlets are miniature structures that arise from meristem in leaf margins that eventually develops roots and drop from the ... leaves and roots play an important role in plants' ability to naturally propagate. The most common modified stems, leaves and ...

... leaves that can be mono-lobed or moderately three-lobed with the slightly smaller leaves that are closer to the apical meristem ... Catawba can produce a medium bodied wine with moderate acidity and enough sugars to produce off-dry to dry styles of wine. ... Winemakers wishing to produce a darker Catawba can use thermovinification, with heat breaking down some of the coloring ... The upper surface of the leaves have a medium green color with a leathery texture while the underside has dense white tomentum ...

At this point the leaf can be inserted cut-side down into moist porous potting medium to root. Over time, the leaf will produce ... Since variegation is produced through rare somatic mutations in the apical meristem, this is the preferred method for ... The leaves are arranged in a rosette and lunate in cross section. The leaves can be 12-30 cm in length, 2.8-3.5 cm thick, and ... Leaf cutting is typically used once rosettes have already flowered, in which case they will no longer grow. Whole leaves can be ...

The visible part is the first true leaf produced from the meristem * Lacking in Acorus, so that if this genus is sister to the ... Broad leaves and reticulate leaf veins, features typical of dicots, are found in a wide variety of monocot families: for ... There is usually only one leaf per node because the leaf base encompasses more than half the circumference. The evolution of ... The cotyledon, the primordial Angiosperm leaf consists of a proximal leaf base or hypophyll and a distal hyperphyll. In ...