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Adventitious roots usually develop from plantlet nodes formed via horizontal, above ground stems, termed stolons, e.g., strawberry runners, and spider plant. Some leaves develop adventitious buds, which then form adventitious roots, e.g. piggyback plant ( Tolmiea menziesii ) and mother-of-thousands ( Kalanchoe daigremontiana ).
The adventitia (/ æ d v ɛ n ˈ t ɪ ʃ ə / ad-ven-TI-shuh) is the outer layer of fibrous connective tissue surrounding an organ. [1]The outer layer of connective tissue that surrounds an artery, or vein – the tunica externa, is also called the tunica adventitia.
Propagation via root cuttings requires adventitious bud formation, e.g., in horseradish and apple. In layering, adventitious roots are formed on aerial stems before the stem section is removed to make a new plant. Large houseplants are often propagated by air layering. Adventitious roots and buds must develop in tissue culture propagation of ...
Adventitious – roots that form from other than the hypocotyl or from other roots. Roots forming on the stem are adventitious. Aerial – roots growing in the air. (Root) crown – the place where the roots and stem meet, which may or may not be clearly visible. [10] Fibrous – describes roots that are thread-like and normally tough.
The root system, often referred to as a 'crown', is adventitious; the root type is fasciculated. The flowers are bell-shaped, greenish-white to yellowish, 4.5–6.5 mm (3 ⁄ 16 – 1 ⁄ 4 in) long, with six tepals partially fused together at the base; they are produced singly or in clusters of two or three in the junctions of the branchlets.
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, engages in photosynthesis, stores nutrients, and produces new living tissue. [1]
adventitious Produced in an unpredictable or unusual position, [13] e.g. an adventitious bud produced from a stem rather than from the more typical axil of a leaf. Adventitious root s may develop from node s of prostrate stems of some plant species, or from the hypocotyl rather than from the radicle of a germinating monocotyledon. adventive
A true root system consists of a primary root and secondary roots (or lateral roots). the diffuse root system: the primary root is not dominant; the whole root system is fibrous and branches in all directions. Most common in monocots. The main function of the fibrous root is to anchor the plant.