Quelques types dinflorescence produits experimentalement chez le. Memoire sur linflorescence des graminees et des cyperees comparee avec celle des autres vegetaux sexiferes. A cymose inflorescence has a composite axis with the main stem ending in a flower and lateral branches bearing additional, laterflowering branches. Inflorescence and flower development in the hedychieae. Inflorescence composed of a main axis and laterally borne flowers with pedicels of equal length, all originating from the same point.
Lappareil reproducteur des plantes a fleurs dapes le site. A very brief introduction to different types of inflorescences, the floral structures of plants. This file is licensed under the creative commons attributionshare alike 4. The main problems in the interpretation of the inflorescence structure result from studies which did not consider the entire inflorescence vegetti, 2003. The fruiting stage of an inflorescence is known as an infructescence. Les sepales sont des pieces florales disposees sous les petales comme sils les soutenaient. All members of the arum family araceae have a spadix inflorescence. On the basis of branching pattern inflorescences are of two types. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed. Here the youngest flower is present at the apex and the older flowers towards the base. Inflorescence morphology article pdf available in systematics and biodiversity 74. Unbranched, indeterminate inflorescence with pedicillate flower along the axis.
In a raceme, spikelets are borne on short stalks, called pedicels, coming off a main culm. Les varietes naines sont adaptees a toutes les conditions agroclimatiques. Proper usage and audio pronunciation of the word inflorescence. In cymose inflorescence, the main axis soon ends in. The arrangement of pedicels on a peduncle characterizes different kinds of inflorescences. It mayalso bear numerous smaller stalks called pedicels, each with a flower at its tip. Photographs of wild type and cyc mutant of antirrhnum a and comparable peloric mutants from linaria vulgaris b, saintpaulia c. Aug 09, 20 a very brief introduction to different types of inflorescences, the floral structures of plants.
Linflorescence, les differents types dinflorescences. A kind of compound inflorescence is the double inflorescence, in which the basic structure is repeated in the place of single florets. All members of the sunflower family asteraceae have heads, including chrysanthemums, zinnias, marigolds, and dandelions. The main kind of racemose inflorescence is the raceme. Capitulum or head a dense vertically compressed inflorescence with sessile flowers on a.
Inflorescence definition of inflorescence by the free. Several plant species, exhibiting a range of inflorescence types and floral symmetries are being analysed in detail. The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions. An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Free question bank for neet biology inflorescence and flower inflorescence.
A critical point is that the overall size of this residuum is larger. In indeterminate inflorescence like racemes, the oldest flowers are borne towards the base and new flowers are. Inflorescence structure article about inflorescence. In botany, an axis means a shoot, in this case one bearing the flowers. An inflorescence is categorized on the basis of the arrangement of flowers on a main axis peduncle and by the timing of its flowering determinate and indeterminate. The oldest flowers are towards the base of the inflorescence and the youngest ones towards the apex. The stalk of each single flower is called a pedicel. In this article we will discuss about the inflorescence in plants. In racemose inflorescence, the main axis continue to grow indifinitely until the last flower is formed at its apex. Inflorescence definition of inflorescence by merriamwebster. Inflorescence simple english wikipedia, the free encyclopedia. Inflorescence, in a flowering plant, a cluster of flowers on a branch or a system of branches. The arrangement in which the youngest flower is present near the apex.
For example, a double raceme is a raceme in which the single flowers are replaced by other simple racemes. Cymose inflorescence is the name of determinate or definite inflorescence in which the tip of the main axis terminates in a flower and further growth continues by one or more lateral branches which also behave like the main axis fig. The stem holding the whole inflorescence is called a peduncle and the main stem holding the flowers or more branches within the inflorescence is called the rachis. Cette racine pousse droit vers le bas et refuges differentes couches du. Mar 26, 2020 inflorescence countable and uncountable, plural inflorescences botany flower cluster. The parallelisms in inflorescence architecture that can be seen among unrelated plant families led stebbins 1974 to speculate about the adaptive value of different types of inflorescence. Media in category inflorescence diagrams the following 150 files are in this category, out of 150 total. Pdf inflorescence morphology was analysed for 21 accessions of the genus thottea from the western ghats, with respect to systematic relationships. Each of the two broad categories of inflorescences can be divided into specific types. Brilliant botany is an educational stem channel focused on inspiring enthusiasm about the plant world. An inflorescence is the reproductive portion of a plant. The arrangement in which the youngest flower is present near the apex and.
Some types of inflorescences characterize different groups of plants. Some of the common types of inflorescences are as follows. Inflorescence definition and meaning collins english. An inflorescence may either be of racemose or cymose types. Different types of inflorescence linkedin slideshare. The other kind of racemose inflorescences can all be derived from this one by dilation, compression, swelling or reduction of the different axes. Flowerlike terminal structures in racemose inflorescences. Inflorescence definition, a flowering or blossoming.
Lappareil reproducteur des plantes a fleurs dapes le. For the indeterminate inflorescences, the simplest types are the spike, raceme, umbel, panicle, and head. In fabaceae leguminosae, the basic inflorescence type is a raceme, but evolutionary shifts have led to pseudoracemes in five tribes of papilionoideae tucker, 1987 and to cymose inflorescences in a few taxa, including caesalpinioid dialium and related genera tucker, 1998. Question bank for neet biology inflorescence and flower. Brilliant botany is an educational stem channel focused on. Inflorescences oxford academic journals oxford university press. An indeterminate inflorescence can continue to produce more flowers at its tip if conditions are favorable and are thus more flexible in flower number. All structured data from the file and property namespaces is available under the creative commons cc0 license. The arrangement of flowers is either basipetal or centrifugal. Racemose or indefinite or indeterminate type of inflorescence.
The term is most used for a group or cluster of flowers arranged on a stem. The panicle has its spikelets spaced along spreading or compressed branches. Inflorescence definition and meaning collins english dictionary. Files are available under licenses specified on their description page. This demonstrated the usefulness of wild relatives of tomato as a tool to further understand flower and fruit development in this crop species. A spike has its spikelets attached directly to the main culm. This page was last edited on 16 october 2009, at 14. For example, nearly all members of the carrot family apiaceae have compound umbels.
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