Each flower is borne on a short stalk, called a pedicel. Each floret contains a pistil and stamens and is enclosed by two bracts, the lemma and the palea. Catkin: It is a modified spike with a drooping central axis. 6. 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. (Young) # (military) To render (a gun) unusable by driving a metal spike into its touch hole. Sequencing yields and alignments. main rachis with branches bearing flowers on pedicels). An example is Amaranthus and Barley. A small spike, especially one that is part of the characteristic inflorescence of grasses and sedges. S2-B). How long does it take for breasts to refill with milk? A grass spikelet consists of one or more florets (reduced flowers). Spike: flowers without pedicel and are in an acropetal arrangement. How much does it cost to play a round of golf at Augusta National? Examples: Present in the plants of family Araceae (arums), Musaceae, Palmaceae, In the compound spadix, the main axis is branched and each branch bears sessile flowers. To fix on a spike; to pierce or run through with a spike. …a single flower), forming the spikelet, the basic unit of a sedge inflorescence. These are small, united bracts, which form a cup-like involucre. Examples: Piper longum (long pepper), Acyranthes (chaff flower), Amaranthus (amaranth), Justicia adhatoda (Malabar nut), etc. Flowers are called “florets”. What is the difference between flower and inflorescence? E.g. Spike with one or few flowers called florets. It is the most advanced inflorescence. In wheat, the rachis of the inflorescence (i.e., spike) does not produce long branches but produces a series of short branches, spikelets, in an alternating pattern, and the main rachis terminates at a single spikelet (Figure 1). Examples: Mangifera indica (mango), Azadirachta indica (neem), Delonix regia (Gulmohar), etc. A5. 1, Fj si). All the flowers appear at the same level. This is why it is also known as an indefinite or indeterminate inflorescence. The basal unit of a grass inflorescence is a spikelet, which is a short and condensed branch containing leaflike structures that enclose one or more florets (flowers). Morphologically, it is the modified part of the shoot of seed plants where flowers are formed. What three theoretical approaches have been used to explain criminal activities? Examples: Hordeum, ryegrass, Triticum aestivum (Wheat), etc. ary spikelet lines as genetic models. A4. What do you mean by spikelet inflorescence? Keywords: homologous series in variation, inflorescence, spike, spike branching, supernumerary spikelets, morphogenesis DOI: 10.1134/S1022795420110034 INTRODUCTION Studying a vast diversity of cultivated plants … By comparison, the inflorescence, or spike, of barley (Hordeum vulgare) and wheat (Triticum aestivum) is unbranched (Bonnett, 1935, 1936). the spikelet in different texts. Grasses produce florets on a structure called a spikelet, and variation in the number and arrangement of both branches and spikelets contributes to the great diversity of grass inflorescence architecture. 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