Search results
Results from the WOW.Com Content Network
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.
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.
For example, the leaves of pine, oak, and cabbage all look very different, but share certain basic structures and arrangement of parts. The homology of leaves is an easy conclusion to make. The plant morphologist goes further, and discovers that the spines of cactus also share the same basic structure and development as leaves in other plants ...
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 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
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.
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 ).
Once brace roots emerge from stem nodes, the influence of external factors such as the availability of water, nutrients, light and humidity become prominent. Therefore, a combination of internal and external factors determine the overall organization, shape, and size of individual roots (root system architecture) and, as a result, root function.