bud, in lower plants and animals, a protuberance from which a new organism or limb develops; in seed plants, a miniaturized twig bearing compressed rudimentary lateral stems (branches), leaves, or flowers, or all three, and protected in cold climates by overlapping bud scales. In warm climates buds may grow all year; in temperate climates they grow in summer and remain dormant in the winter. The form of winter buds (particularly the larger terminal buds on twigs) of trees and shrubs may be used to identify the species. The "eyes" of a potato are undeveloped buds. See budding budding, type of grafting in which a plant bud is inserted under the bark of the stock (usually not more than a year old). It is best done when the bark will peel easily and the buds are mature, as in spring, late summer, or early autumn.
..... Click the link for more information. ; stem stem, supporting structure of a plant, serving also to conduct and to store food materials. The stems of herbaceous and of woody plants differ: those of herbaceous plants are usually green and pliant and are covered by a thin epidermis instead of by the bark of woody
..... Click the link for more information. .

bud

Small lateral or terminal protuberance on the stem of a vascular plant that may develop into a flower, leaf, or shoot. Buds arise from meristem tissue. In temperate climates, trees form resting buds that are resistant to frost in preparation for winter. Flower buds are modified leaves.

bud

1. a swelling on a plant stem consisting of overlapping immature leaves or petals

2. any small budlike outgrowth

3. an asexually produced outgrowth in simple organisms, such as yeasts, and the hydra that develops into a new individual

4. in bud at the stage of producing buds

bud [bəd]

(botany)

An embryonic shoot containing the growing stem tip surrounded by young leaves or flowers or both and frequently enclosed by bud scales.

Bud

An embryonic shoot containing the growing stem tip surrounded by young leaves or flowers or both, and the whole frequently enclosed by special protective leaves, the bud scales.

The bud at the apex of the stem is called a terminal bud (illus. a). Any bud that develops on the side of a stem is a lateral bud. The lateral bud borne in the axil (angle between base of leaf and stem) of a leaf is the axillary bud (illus. a and d). It develops concurrently with the leaf which subtends it, but usually such buds do not unfold and grow rapidly until the next season. Because of the inhibitory influence of the apical or other buds, many axillary buds never develop actively or may not do so for many years. These are known as latent or dormant buds. Above or beside the axillary buds, some plants regularly produce additional buds called accessory, or supernumerary, buds. Accessory buds which occur above the axillary bud are called superposed buds (illus. c), and those beside it collateral buds (illus. d). Under certain conditions, such as removal of terminal and axillary buds, other buds may arise at almost any point on the stem, or even on roots or leaves. Such buds are known as adventitious buds. See Plant growth

Bud positions

Buds that give rise to flowers only are termed flower buds, or in some cases, fruit buds. If a bud grows into a leafy shoot, it is called a leaf bud, or more accurately, a branch bud. A bud which contains both young leaves and flowers is called a mixed bud.

Buds of herbaceous plants and of some woody plants are covered by rudimentary foliage leaves only. Such buds are called naked buds. In most woody plants, however, the buds are covered with modified protective leaves in the form of scales. These buds are called scaly buds or winter buds. In the different species of plants, the bud scales differ markedly. They may be covered with hairs or with water-repellent secretions of resin, gum, or wax. Ordinarily when a bud opens, the scales fall off, leaving characteristic markings on the stem (bud scale scars). See Leaf

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bud

bud
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