plant propagation

(redirected from Asexual propagation)

Plant propagation

The deliberate, directed reproduction of plants using plant cells, tissues, or organs. Asexual propagation, also called vegetative propagation, is accomplished by taking cuttings, by grafting or budding, by layering, by division of plants, or by separation of specialized structures such as tubers, rhizomes, or bulbs. This method of propagation is used in agriculture, in scientific research, and in professional and recreational gardening. It has a number of advantages over seed propagation: it retains the genetic constitution of the plant type almost completely; it is faster than seed propagation; it may allow elimination of the nonfruiting, juvenile phase of the plant's life; it preserves unique, especially productive, or esthetically desirable plant forms; and it allows plants with roots well adapted for growth on poor soils to be combined with tops that produce superior fruits, nuts, or other products. See Breeding (plant), Reproduction (plant)

Tissue cultures and protoplast cultures are among the techniques that have been investigated for plant propagation; the success of a specific technique depends on a number of factors. Practical applications of such methods include the clonal propagation of desirable phenotypes and the commercial production of virus-free plants.

Plant tissue cultures are initiated by excising tissue containing nucleated cells and placing it on an enriched sterile culture medium. The response of a plant tissue to a culture medium depends on a number of factors: plant species, source of tissue, chronological age and physiological state of the tissue, ingredients of the culture medium, and physical culturing conditions, such as temperature, photoperiod, and aeration.

Though technically more demanding, successful culture of plant protoplasts involves the same basic principles as plant tissue culture. Empirical methods are used to determine detailed techniques for individual species; such factors as plant species, tissue source, age, culture medium, and physical culture conditions have to be considered. See Plant cell

plant propagation

[′plant ‚präp·ə‚gā·shən]
(botany)
The deliberate, directed reproduction of plants using seeds or spores (sexual propagation), or using vegetative cells, tissues, or organs (asexual reproduction).
References in periodicals archive ?
He shared that trials on propagation by seeds and trials using asexual propagation are being conducted.
Asexual propagation is one of the most appropriate methods for plant multiplication, particularly for seeds with low germination, as is the case with E.
Chapter topics include Sexual Propagation: Why and How, and Asexual Propagation.
Mudge, Janick, Scofield, and Goldschmidt (2009) explained that woody plant species required asexual propagation due to their heterozygous nature.
The in vitro culture has been considered an almost indispensable tool to accelerate conventional breeding techniques, and is an alternative to traditional vegetative propagation and aims to achieve large scale and in a short period of time, free of pathogens and plants identical to the original, in other words, to realize with aseptically perform a plant cloning, which is defined as an asexual propagation of cells or organisms, to obtain new individuals, maintaining the genotype identical to the common ancestor (Torres et al.
An experiment was conducted to evaluate asexual propagation of olive cultivars through air layering.
Asexual propagation has the advantage of procuring plantlets that are genetically identical to the mother plant and blossom more quickly than plants from seed, but the number obtained is low for commercial purposes for which seedlings or mericlones are preferred.
Rooting of stem cuttings is the most easiest and commonly used asexual propagation method in jojoba 4,9.
43-61) review the cellular mechanisms controlling the overlapping processes of regeneration and asexual propagation in botryl-lid ascidians.
Specific adaptations of organs allow asexual propagation from essentially all vegetative parts of the plant: leaves, stems, buds, roots, and even single cells.
The vegetative or asexual propagation is performed using parts of the plant, such as grafts, gems and cuttings.
Clone--two or more individuals, originally derived from one plant by asexual propagation, which remain genetically identical.