In botany , a bulb is a short underground stem with fleshy leaves or leaf bases that function as food storage organs during dormancy . In gardening , plants with other kinds of storage organ are also called ornamental bulbous plants or just bulbs .
17-410: The bulb's leaf bases, also known as scales , generally do not support leaves, but contain food reserves to enable the plant to survive adverse conditions. At the center of the bulb is a vegetative growing point or an unexpanded flowering shoot. The base is formed by a reduced stem , and plant growth occurs from this basal plate. Roots emerge from the underside of the base, and new stems and leaves from
34-411: A 2004 album by Gaelle Transience (Steven Wilson album) , 2015 Transience (Wreckless Eric album) Science and engineering [ edit ] Transient state , when a process variable or variables have been changed and the system has not yet reached a steady state. Transient modelling , a way of looking at a process with the primary criterion of time, observing the pattern of changes in
51-418: A US secret program to intercept Soviet satellite transmissions Transient , a 2005 short film by Australian director Craig Boreham Transients, a term for some homeless people "Transients", title short story in the 1993 collection Transients and Other Disquieting Stories by Darrell Schweitzer See also [ edit ] Impermanence , an essential doctrine of Buddhism Mono no aware ,
68-399: A bulb, or else on the end of small underground stems connected to the original bulb. Some lilies, such as the tiger lily Lilium lancifolium , form small bulbs, called bulbils, in their leaf axils . Several members of the onion family, Alliaceae, including Allium sativum ( garlic ), form bulbils in their flower heads, sometimes as the flowers fade, or even instead of the flowers (which is
85-662: A feeling of transience in Japanese culture Temporality , the linear progression of past, present, and future All pages with titles containing transient Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with the title Transience . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Transience&oldid=1209329557 " Category : Disambiguation pages Hidden categories: Short description
102-402: A few species in the genus Oxalis , such as Oxalis latifolia . A bulbil is a small bulb, and may also be called a bulblet , bulbet , or bulbel . Small bulbs can develop or propagate a large bulb. If one or several moderate-sized bulbs form to replace the original bulb, they are called renewal bulbs . Increase bulbs are small bulbs that develop either on each of the leaves inside
119-402: A form of apomixis ). The so-called tree onion ( Allium × proliferum ) forms small onions which are large enough for pickling . Some ferns, such as the hen-and-chicken fern , produce new plants at the tips of the fronds' pinnae that are sometimes referred to as bulbils. Cataphyll In plant morphology , a cataphyll (sometimes also called a cataphyllum or cataphyll leaf )
136-437: A property of any element in the system that is temporary Transient (oscillation) , a short-lived burst of energy caused by a sudden change of state Transient climate simulation , a mode of running a global climate model (GCM) so that the climate of the model represents a realistic mode of possible change in the real world. Other uses [ edit ] "Transience" (short story) , by Arthur C. Clarke TRANSIENT ,
153-442: Is a reduced, small leaf . Many plants have both "true leaves" ( euphylls ), which perform most of the photosynthesis , and cataphylls, which are modified to perform other functions. Cataphylls include bracts , bracteoles and bud scales, as well as any small leaves that resemble scales , known as scale leaves . The functions of cataphylls, such as bud scales, may be short-lived, and they are often shed after their function
170-1014: Is fulfilled. Cataphyll comes from the Ancient Greek κατά ("kata"), meaning "down", and φύλλον ("phyllon"), meaning "leaf". In some cases, cataphylls perform a transient function, after which they die and may shed. Those that shed early are said to be caducous . The sepals of Papaver species are shed during the very opening of the petals and are a dramatic example of caducous leaves. Cataphylls can have many other forms. Some, such as spines , corm-scales , and bud-scales , may be persistent but may not perform their major function until they die, whether or not they are physically shed. Examples of various kinds of living cataphylls include bulb-scales , rhizome-scales , cotyledons , and scaly bracts . Several of these occur in various forms and contexts. For example, bud scales occur on numerous kinds of leaf or branch buds, as well as on flower buds. Protective masses of dead leaves encircle
187-423: The bulb grows to flowering size during the vegetative stage and the plant flowers during the reproductive stage. Certain environmental conditions are needed to trigger the transition from one stage to the next, such as the shift from a cold winter to spring. Once the flowering period is over, the plant enters a foliage period of about six weeks during which time the plant absorbs nutrients from the soil and energy from
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#1732786840706204-515: The corm. Unlike bulb-scales, however, the corm tunic has no significant storage function; that task is left to the parenchyma of the cortex of the corm. transient (Redirected from Transient ) [REDACTED] Look up transience or transient in Wiktionary, the free dictionary. Transience or transient may refer to: Music [ edit ] Transient (album) ,
221-429: The plant germinates. Some, such as the cotyledons of many legumes , conifers , and cucurbits , develop chlorophyll and perform the first photosynthesis for the germinating plant. Like bulb-scales, corm scales are largely the basal parts of the photosynthetic leaves that show up above ground. Some species of cormous plants, such as some Lapeirousia , also produce cataphylls that act solely as tunic leaves for
238-522: The stems of some species of palm trees or aloes , but those are not usually regarded as cataphylls because their primary function while alive is photosynthesis. Cotyledons are widely regarded as a class of cataphyll, though many kinds of cotyledons function as living tissue and remain alive until, at least, the end of their function, at which time they wither and may drop off. They begin as leaf rudiments . Many kinds accumulate nutrient materials for storage, starting to give up their stored material as
255-431: The subject being studied over time. Transient response , the response of a system to a change from an equilibrium or a steady state. Transient (acoustics) , a high-amplitude, short-duration sound at the beginning of a waveform Transient (astronomy) , an astronomical object or phenomenon of short duration Transient (civil engineering) , any pressure wave that is short lived Transient (computer programming) ,
272-586: The sun for setting flowers for the next year. Bulbs dug up before the foliage period is completed will not bloom the following year but then should flower normally in subsequent years. Plants that form underground storage organs , including bulbs as well as tubers and corms , are called geophytes . Some epiphytic orchids (family Orchidaceae ) form above-ground storage organs called pseudobulbs , that superficially resemble bulbs. Nearly all plants that form true bulbs are monocotyledons , and include: The only eudicot plants that produce true bulbs are just
289-424: The upper side. Tunicate bulbs have dry, membranous outer scales that protect the continuous lamina of fleshy scales. Species in the genera Allium , Hippeastrum , Narcissus , and Tulipa all have tunicate bulbs. Non-tunicate bulbs, such as Lilium and Fritillaria species, lack the protective tunic and have looser scales. Bulbous plant species cycle through vegetative and reproductive growth stages;
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