Relevant bibliographies by topics / Umbel inflorescence

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Academic literature on the topic 'Umbel inflorescence'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 February 2023

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Journal articles on the topic "Umbel inflorescence"

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Ochoa, Oswaldo, Vince D’Antonio, and Carlos F. Quiros. "Techniques for Water Emasculation and Cut Seedstalk Pollination in Celery." HortScience 21, no. 6 (1986): 1455–56. http://dx.doi.org/10.21273/hortsci.21.6.1455.

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Abstract Hybridization in celery is a difficult task faced by the breeder due to the complex floral biology. Celery flowers are hermaphroditic but protandrous and are arranged in compound inflorescences or umbels, formed by small groups of flowers or umbellets disposed in whorls (3). The different developmental stages of the flowers in the umbel makes it difficult to control pollinations effectively. Pollen from young flowers will pollinate old ones that have receptive stigmas in the same inflorescence or anywhere else on the plant. Honma (4) reported a useful technique for celery hybridizatio
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2

Morales, J. Francisco. "Two new remarkable Dendropanax (Araliaceae) from Costa Rica." Darwiniana, nueva serie 10, no. 2 (2022): 417–28. http://dx.doi.org/10.14522/darwiniana.2022.102.1060.

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Two new species of Dendropanax (Araliaceae) endemic to Costa Rica are described. Dendropanax aberrans J.F. Morales resembles D. grandiflorus but differs by the inflorescence structure (panicle of umbels vs. single umbel), and the smaller sizes of both the hypanthium and the petals. Dendropanax zarratu J.F. Morales is unique among Central America and West Indian taxa. It is recognized by its panicle of umbels, with the peduncles agglomerate, flowers 8-9-merous, hypanthium 7-8 mm long, and fruits 1.2-1.4 cm long. Illustrations of the new species and a key to the four Dendropanax having elongated
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3

Kandakoor, Subhash B., and Jitendra Kumar S. Hilli. "Influence of bee pollination on quality and quantity of onion (Allium cepa L.) seed." INTERNATIONAL JOURNAL OF PLANT PROTECTION 13, no. 2 (2020): 200–204. http://dx.doi.org/10.15740/has/ijpp/13.2/200-204.

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The activity of bees pollination in onion was observed throughout the day. Numerically maximum activity was observed during afternoon hours (12.00 to 2.00 PM) with 7.00 numbers in rock bee, 5.40 in Indian bees, 11.60 in little bees and 7.80 in case of dammer be, respectively. Among the four species of bees, little bees were more in entire day with highest of 111.60 bees/10 inflorescence/ minute followed by dammer bee with 9.40 bees/10 inflorescence/ minute, Among the bees major contributor was little bee, this may be due to more colonies of little bees in that area and destruction of rock bee
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Khamraeva, D. T. "Structural peculiarities of the flower-bearing shoot of some Apiaceae Lindl. species." Проблемы ботаники южной сибири и монголии 20, no. 1 (2021): 466–69. http://dx.doi.org/10.14258/pbssm.2021092.

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The article considers the synflorescence structure of five little-studied and endemic representatives ofUmbelliferae (Apiaceae Lindl.) from Central Asia. Among the taxa studied, Komarovia anisosperma is distinguished bya special organization of the inflorescence, and which is represented by the type of storey raceme from open double umbels collected 2–6 in whorls. The remaining species are characterized by one type of inflorescence – this is a panicle ofclosed double umbels. Belonging to the same tribe Komarovieae J. Zhou et S. R. Downie, species Komarovia anisosperma and Sphaerosciadium denae
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Suwanphakdee, Chalermpol, Kwanjai Khammongkol, David J. Middleton, and Somran Suddee. "Thunbergia amphaii (Acanthaceae) a new species from Thailand." Thai Forest Bulletin (Botany) 49 (2021): 57–62. http://dx.doi.org/10.20531/tfb.2021.49.1.06.

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Thunbergia amphaii, a new species from North-Eastern Thailand is described and illustrated. The pseudo-umbel inflorescence is diagnostic for this species. The pollen morphology, especially the size and the pericolpate aperture arrangement, further support this species as new to science.
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Suwanphakdee, Chalermpol, Kwanjai Khammongkol, David J. Middleton, and Somran Suddee. "Thunbergia amphaii (Acanthaceae) a new species from Thailand." Thai Forest Bulletin (Botany) 49 (2021): 57–62. http://dx.doi.org/10.20531/tfb2021.49.1.06.

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Thunbergia amphaii, a new species from North-Eastern Thailand is described and illustrated. The pseudo-umbel inflorescence is diagnostic for this species. The pollen morphology, especially the size and the pericolpate aperture arrangement, further support this species as new to science.
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7

FERRER-GALLEGO, PEDRO PABLO, Raúl FERRER-GALLEGO, Emilio LAGUNA LUMBRERAS, and Miguel GUARA-REQUENA. "Allium moly subsp. glaucescens (Asparagaceae), a new subspecies from the Iberian Peninsula." Phytotaxa 192, no. 1 (2015): 35. http://dx.doi.org/10.11646/phytotaxa.192.1.4.

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Allium moly subsp. glaucescens is described as a new subspecies from the Iberian Peninsula. Different morphological characters from populations located in Valencia (Spain) are evidenced. Lower size of plants, smaller and narrower leaves, of noticeably bluish-green color (glaucous-pruinose), smaller and less flowers in the umbel-inflorescence are characteristic of the new subspecies. Ecology, habitat, cultivation and chemotaxonomy have also been considered and discussed in this work.
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TROVÓ, MARCELO. "“Species imperfecte cognita”—enlightening Paepalanthus cordatus (Eriocaulaceae): nomenclatural and taxonomic notes on an endangered species from central Brazil." Phytotaxa 527, no. 2 (2021): 143–50. http://dx.doi.org/10.11646/phytotaxa.527.2.7.

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Paepalanthus cordatus is an endangered species described from a single collection which lacks fully developed inflorescences and flowers. Despite the absence of these characters, the species was unambiguously placed in P. sect. Diphyomene, one of the few groups of Paepalanthus with dimerous flowers and which is mainly distributed in central Brazil. In this manuscript, I provide a full description of the species, detailing and illustrating the fully developed inflorescences and flowers for the first time. The spherical umbel-shaped inflorescence is composed of sets of capitula bearing dimerous
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9

Ménard, L., P. E. Brandeis, P. Simoneau, et al. "First Report of Umbel Browning and Stem Necrosis Caused by Diaporthe angelicae on Carrot in France." Plant Disease 98, no. 3 (2014): 421. http://dx.doi.org/10.1094/pdis-06-13-0673-pdn.

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In 2011, carrot (Daucus carota L.) seed production occurred on 2,900 ha, which accounts for approximately 25% of the area devoted to the production of vegetable fine seeds. Since 2007, symptoms of umbel browning have been regularly observed in carrot production areas located in the central region. Initially, triangular necrotic lesions appeared on carrot umbels that later spread to the entire umbels and often progressed to the stems. Diseased umbels became dried prematurely, compromising seed development. The loss in seed production was estimated at approximately 8% of the harvested carrot umb
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Wilder, George J. "Morphology and symmetry of the vegetative parts of Smilax auriculata (Smilacaceae)." Journal of the Botanical Research Institute of Texas 14, no. 1 (2020): 81–102. http://dx.doi.org/10.17348/jbrit.v14.i1.899.

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Smilax auriculata produces a subterranean rhizome system and an aerial vegetative branching system. Three intergrading types of stems (types 1, 2, and 3) compose the aerial branching system; these types are identified primarily according to prickle concentration, but also differ from one another in additional ways. Type-3 stems are determinate and either proleptic or precocious. Between growing seasons a foliage leaf of a type-3 stem may subtend either a solitary vegetative bud (or an expanded vegetative branch) or an inflorescence superposed over a vegetative bud (or expanded vegetative branc
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Dissertations / Theses on the topic "Umbel inflorescence"

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Davila, Yvonne Caroline. "Pollination ecology of Trachymene incisa (Apiaceae): Understanding generalised plant-pollinator systems." University of Sydney, 2006. http://hdl.handle.net/2123/1896.

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Doctor of Philosophy (PhD)<br>A renewed focus on generalised pollinator systems has inspired a conceptual framework which highlights that spatial and temporal interactions among plants and their assemblage of pollinators can vary across the individual, population, regional and species levels. Pollination is clearly a dynamic interaction, varying in the number and interdependence of participants and the strength of the outcome of the interaction. Therefore, the role of variation in pollination is fundamental for understanding ecological dynamics of plant populations and is a major factor in the
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