Basal shoot

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A basal shoot emerging from the base of a juvenile tree Sucker on tree.jpg
A basal shoot emerging from the base of a juvenile tree

Basal shoots, root sprouts, adventitious shoots, and suckers are words for various kinds of shoots that grow from adventitious buds on the base of a tree or shrub, or from adventitious buds on its roots. Shoots that grow from buds on the base of a tree or shrub are called basal shoots; these are distinguished from shoots that grow from adventitious buds on the roots of a tree or shrub, which may be called root sprouts or suckers. A plant that produces root sprouts or runners is described as surculose. [1] Water sprouts produced by adventitious buds may occur on the above-ground stem, branches or both of trees and shrubs. Suckers are shoots arising underground from the roots some distance from the base of a tree or shrub. [1]

Contents

In botany and ecology

Poplar root sprouts (suckers) emerging along the root of an originating tree (not visible) Drageons de peupliers92.jpg
Poplar root sprouts (suckers) emerging along the root of an originating tree (not visible)

In botany, a root sprout or sucker is a severable plant that grows not from a seed but from the meristem of a root at the base of or a certain distance from the original tree or shrub. Root sprouts may emerge a substantial distance from the base of the originating plant, are a form of vegetative dispersal, and may form a patch that constitutes a habitat in which that surculose plant is the dominant species. Root sprouts also may grow from the roots of trees that have been felled. Tree roots ordinarily grow outward from their trunks a distance of 1.5 to 2 times their heights, and therefore root sprouts can emerge a substantial distance from the trunk.[ citation needed ]

This is a phenomenon of natural "asexual reproduction", also denominated "vegetative reproduction". It is a strategy of plant propagation. The complex of clonal individuals and the originating plant comprise a single genetic individual, i. e., a genet. The individual root sprouts are clones of the original plant, and each has a genome that is identical to that of the originating plant from which it grew. Many species of plants reproduce through vegetative reproduction, e. g. Canada thistle, cherry, apple, guava, privet, hazel, lilac, tree of heaven, and Asimina triloba .[ citation needed ]

The root sprout is a form of dispersal vector that allows plants to spread to habitats that favor their survival and growth. Some species, such as poplars and blackthorn, produce root sprouts that can spread rapidly, and they can form thick mats of roots that can reclaim areas that have been cleared of vegetation by logging, erosion, pasturing. These plants could be considered invasive, but they are cultivated or permitted to grow to stabilize soils and even to then be naturally replaced by non-pioneer species in locations as such those that have been developed for public works and along channels of waterways that may flood and reservoirs. These plants form shaded areas wherein new species may grow and gradually replace them.[ citation needed ]

Stolons are stems that grow on the surface of the soil or immediately below it and form adventitious roots at their nodes, and new clonal plants from the buds. [2] [3] Not all horizontal plant stems are stolons. Plants with stolons are described as "stoloniferous". Stolons, especially those above the surface of the soil are often denominated "runners". Rhizomes, in contrast, are root-like stems that may either grow horizontally on the surface of the soil or in other orientations underground. [2]

In horticulture

Root sprouts and basal shoots can be used to propagate woody plants. Root sprouts can be dug or severed with some of the roots still attached. As for basal shoots, stool beds involve cutting a juvenile plant proximate to the surface of the soil and heaping soil over the cut so that basal shoots will form adventitious roots and later can be severed to form multiple, rooted, new plants. The technique is used especially for vegetative propagation of rootstocks for apple trees. [4]

Related Research Articles

<span class="mw-page-title-main">Fruit tree propagation</span> Usually carried out vegetatively by grafting or budding a desired variety onto a suitable rootstock

Fruit tree propagation is usually carried out vegetatively (non-sexually) by grafting or budding a desired variety onto a suitable rootstock.

<span class="mw-page-title-main">Tuber</span> Storage organ in plants

Tubers are a type of enlarged structure used as storage organs for nutrients in some plants. They are used for the plant's perennation, to provide energy and nutrients for regrowth during the next growing season, and as a means of asexual reproduction. Stem tubers form thickened rhizomes or stolons ; well known species with stem tubers include the potato and yam. Some writers also treat modified lateral roots under the definition; these are found in sweet potatoes, cassava, and dahlias.

<span class="mw-page-title-main">Rhizome</span> Underground stem in which various plants asexually reproduce via budding

In botany and dendrology, a rhizome is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow horizontally. The rhizome also retains the ability to allow new shoots to grow upwards.

<span class="mw-page-title-main">Vegetative reproduction</span> Asexual method of reproduction in plants

Vegetative reproduction is any form of asexual reproduction occurring in plants in which a new plant grows from a fragment or cutting of the parent plant or specialized reproductive structures, which are sometimes called vegetative propagules.

<span class="mw-page-title-main">Corm</span> Underground plant stem

A corm, bulbo-tuber, or bulbotuber is a short, vertical, swollen underground plant stem that serves as a storage organ that some plants use to survive winter or other adverse conditions such as summer drought and heat (perennation).

<span class="mw-page-title-main">Plant propagation</span> Process in growing new plants from a variety of sources

Plant propagation is the process by which new plants grow from a variety of sources: seeds, cuttings, and other plant parts. Plant propagation can also refer to the man-made or natural dispersal of seeds.

<span class="mw-page-title-main">Clonal colony</span> Genetically identical, single site plants, fungi, or bacteria

A clonal colony or genet is a group of genetically identical individuals, such as plants, fungi, or bacteria, that have grown in a given location, all originating vegetatively, not sexually, from a single ancestor. In plants, an individual in such a population is referred to as a ramet. In fungi, "individuals" typically refers to the visible fruiting bodies or mushrooms that develop from a common mycelium which, although spread over a large area, is otherwise hidden in the soil. Clonal colonies are common in many plant species. Although many plants reproduce sexually through the production of seed, reproduction occurs by underground stolons or rhizomes in some plants. Above ground, these plants most often appear to be distinct individuals, but underground they remain interconnected and are all clones of the same plant. However, it is not always easy to recognize a clonal colony especially if it spreads underground and is also sexually reproducing.

<span class="mw-page-title-main">Aerial root</span> Root which grows above the ground

Aerial roots are roots above the ground. They are almost always adventitious. They are found in diverse plant species, including epiphytes such as orchids (Orchidaceae), tropical coastal swamp trees such as mangroves, banyan figs, the warm-temperate rainforest rata, and pohutukawa trees of New Zealand. Vines such as common ivy and poison ivy also have aerial roots.

<span class="mw-page-title-main">Stolon</span> Horizontal connections between organisms

In biology, stolons, also known as runners, are horizontal connections between parts of an organism. They may be part of the organism, or of its skeleton. Typically, animal stolons are exoskeletons.

Fragmentation in multicellular or colonial organisms is a form of asexual reproduction or cloning, where an organism is split into fragments. Each of these fragments develops into mature, fully grown individuals that are clones of the original organism.

<span class="mw-page-title-main">Layering</span> Plant propagation technique

Layering is the process whereby the branch of a tree, or other plant, produces roots and is separated from the original plant, becoming a new, separate plant. Layering is utilized by horticulturists to propagate desirable plants.

<span class="mw-page-title-main">Cutting (plant)</span> Method of propagating plants

A plant cutting is a piece of a plant that is used in horticulture for vegetative (asexual) propagation. A piece of the stem or root of the source plant is placed in a suitable medium such as moist soil. If the conditions are suitable, the plant piece will begin to grow as a new plant independent of the parent, a process known as striking. A stem cutting produces new roots, and a root cutting produces new stems. Some plants can be grown from leaf pieces, called leaf cuttings, which produce both stems and roots. The scions used in grafting are also called cuttings.

<i>Anodopetalum</i> Genus of flowering plants

Anodopetalum biglandulosum is a Tasmanian endemic shrub or small tree species that is a common component of Tasmania's cool temperate rainforests. It is commonly known as horizontal because of its habit of growth. It is the sole species in the genus Anodopetalum.

Plant reproduction is the production of new offspring in plants, which can be accomplished by sexual or asexual reproduction. Sexual reproduction produces offspring by the fusion of gametes, resulting in offspring genetically different from either parent. Asexual reproduction produces new individuals without the fusion of gametes, resulting in clonal plants that are genetically identical to the parent plant and each other, unless mutations occur.

This page provides a glossary of plant morphology. Botanists and other biologists who study plant morphology use a number of different terms to classify and identify plant organs and parts that can be observed using no more than a handheld magnifying lens. This page provides help in understanding the numerous other pages describing plants by their various taxa. The accompanying page—Plant morphology—provides an overview of the science of the external form of plants. There is also an alphabetical list: Glossary of botanical terms. In contrast, this page deals with botanical terms in a systematic manner, with some illustrations, and organized by plant anatomy and function in plant physiology.

<span class="mw-page-title-main">Grafting</span> Horticultural technique of joining plant tissues to grow together

Grafting or graftage is a horticultural technique whereby tissues of plants are joined so as to continue their growth together. The upper part of the combined plant is called the scion while the lower part is called the rootstock. The success of this joining requires that the vascular tissues grow together and such joining is called inosculation. The technique is most commonly used in asexual propagation of commercially grown plants for the horticultural and agricultural trades.

Important structures in plant development are buds, shoots, roots, leaves, and flowers; plants produce these tissues and structures throughout their life from meristems located at the tips of organs, or between mature tissues. Thus, a living plant always has embryonic tissues. By contrast, an animal embryo will very early produce all of the body parts that it will ever have in its life. When the animal is born, it has all its body parts and from that point will only grow larger and more mature. However, both plants and animals pass through a phylotypic stage that evolved independently and that causes a developmental constraint limiting morphological diversification.

<span class="mw-page-title-main">Plant stem</span> Structural axis of a vascular plant

A stem is one of two main structural axes of a vascular plant, the other being the root. It supports leaves, flowers and fruits, transports water and dissolved substances between the roots and the shoots in the xylem and phloem, stores nutrients, and produces new living tissue. The stem can also be called halm or haulm or culms.

<span class="mw-page-title-main">Water sprout</span>

Water sprouts or water shoots are shoots that arise from the trunk of a tree or from branches that are several years old, from latent buds. The latent buds might be visible on the bark of the tree, or submerged under the bark as epicormic buds. They are sometimes called suckers, although that term is more correctly applied to shoots that arise from below ground, from the roots, and a distance from the trunk. Vigorous upright water sprouts often develop in response to damage or pruning.

Nurse grafting is a method of plant propagation that is used for hard-to-root plant material. If a desirable selection cannot be grown from seed, it must be propagated asexually (cloned) in order to be genetically identical to the parent. Nurse grafting allows a scion to develop its own roots, instead of being grafted to a rootstock.

References

  1. 1 2 Beentje, Henk (2006). The Kew plant glossary. Royal Botanic Gardens, Kew, London: Kew Publishing. ISBN   978-1-84246-604-9.
  2. 1 2 Hickey, M.; King, C. (2001). The Cambridge Illustrated Glossary of Botanical Terms. Cambridge University Press.
  3. "Stolon". Dictionary.com. Archived from the original on 9 June 2007. Retrieved 7 May 2007.
  4. A. N. Roberts W. M. Mellenthin (1957), Propagating Clonal Rootstocks (PDF), vol. Circular of Information 578, Agricultural Experiment Station Oregon State College Corvallis