Academic literature on the topic 'Staminode'

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Journal articles on the topic "Staminode"

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Sandvik, Sylvi M., and Ørjan Totland. "Quantitative importance of staminodes for female reproductive success in Parnassia palustris under contrasting environmental conditions." Canadian Journal of Botany 81, no. 1 (2003): 49–56. http://dx.doi.org/10.1139/b03-006.

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The five sterile stamens, or staminodes, in Parnassia palustris act both as false and as true nectaries. They attract pollinators with their conspicuous, but non-rewarding tips, and also produce nectar at the base. We removed staminodes experimentally and compared pollinator visitation rate and duration and seed set in flowers with and without staminodes in two different populations. We also examined the relative importance of the staminode size to other plant traits. Finally, we bagged, emasculated, and supplementary cross-pollinated flowers to determine the pollination strategy and whether r
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Meaders, Clara, Ya Min, Katherine J. Freedberg, and Elena Kramer. "Developmental and molecular characterization of novel staminodes in Aquilegia." Annals of Botany 126, no. 2 (2020): 231–43. http://dx.doi.org/10.1093/aob/mcaa029.

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Abstract Background and Aims The ranunculid model system Aquilegia is notable for the presence of a fifth type of floral organ, the staminode, which appears to be the result of sterilization and modification of the two innermost whorls of stamens. Previous studies have found that the genetic basis for the identity of this new organ is the result of sub- and neofunctionalization of floral organ identity gene paralogues; however, we do not know the extent of developmental and molecular divergence between stamens and staminodes. Methods We used histological techniques to describe the development
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Wang, Menglin, Shuyin Huang, Manru Li, Doyle McKey, and Ling Zhang. "Staminodes influence pollen removal and deposition rates in nectar-rewarding self-incompatible Phanera yunnanensis (Caesalpinioideae)." Journal of Tropical Ecology 35, no. 1 (2019): 34–42. http://dx.doi.org/10.1017/s0266467418000433.

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AbstractStaminodes are sterile stamens that produce no pollen, exhibit diverse structures and perform various functions. Flowers of Phanera yunnanensis possess three fertile stamens with large anthers and long filaments, and seven staminodes with tiny anthers and short filaments. To investigate the adaptive significance of staminodes in this species, we studied effects of staminode removal on pollen removal and deposition, flower visitation rate and fruit set in Xishuangbanna, south-western China. Four species of nectar-foraging pollinators visited flowers, mostly Amegilla zonata and Apis cera
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Traore, Abdoulaye, and Mark J. Guiltinan. "Effects of Carbon Source and Explant Type on Somatic Embryogenesis of Four Cacao Genotypes." HortScience 41, no. 3 (2006): 753–58. http://dx.doi.org/10.21273/hortsci.41.3.753.

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The effects of five carbon sources (glucose, fructose, maltose, sorbitol, and sucrose) and two explant types (petals and staminodes) on cacao somatic embryogenesis was studied. No growth was observed on both types of explants cultured on sorbitol containing media and slow growth was obtained on media supplemented with maltose. Depending on the genotype, the percentage of explants producing one or more embryos ranged from 6% to 99%, 18% to 98%, and 3% to 82% on media containing glucose, fructose and sucrose respectively. Explants cultured continuously on maltose or sorbitol-containing media fai
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Entuni, Gibson, Hollena Nori, Rebicca Edward, and Ahmad Kamil bin Mohammad Jaafar. "Reproductive Characteristics of the Selected Cocoa (Theobroma cacao L.) Clones after Regenerated from the Somatic Embryogenesis Culture." Trends in Sciences 18, no. 24 (2021): 1406. http://dx.doi.org/10.48048/tis.2021.1406.

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This study was conducted to evaluate the reproductive characteristics of 4 elite cocoa clones (MCBC1, PBC230, KKM22 and KKM4) propagated via somatic embryogenesis culture. From the findings, all clones have similar reproductive characteristics with clones from conventional grafted. However, only KKM4 clone from immature zygotic embryo culture produced the shortest staminode to style distance of 1.83 mm. This consequently influenced flower stability by reducing the efficiency of pollination by insects. It was found that this clone also has the highest number of flowers drop after anthesis (5 fl
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Flores, Rodolfo, Carla Black, and Alicia Ibáñez. "A new species of Heliconia (Heliconiaceae) with pendent inflorescence, from Chucantí Private Nature Reserve, eastern Panama." PhytoKeys 77 (February 7, 2017): 21–32. https://doi.org/10.3897/phytokeys.77.11190.

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Heliconia berguidoi (Heliconiaceae), a new species from premontane forest of eastern Panama, is described, illustrated and its conservation status evaluated. H. berguidoi bears pink flowers, an uncommon color in this group. It differs from the Colombian species Heliconia rhodantha and Heliconia sanctae-theresae, the most similar taxa, by the combination of a petiole glabrous except for the woolly base, a very long peduncle, the perianth pubescent at the apex and staminode with cuspidate apex. H. berguidoi is also similar to Heliconia pogonantha in all four of its varieties and to Heliconia ram
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LUNA, NAÉDJA, EDLLEY PESSOA, and MARCCUS ALVES. "A new “giant” species of Maranta L. (Marantaceae) from the Atlantic Forest of northeastern Brazil." Phytotaxa 357, no. 1 (2018): 59. http://dx.doi.org/10.11646/phytotaxa.357.1.6.

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A new species of Maranta subg. Maranta, M. gigantea, is described and illustrated. This is known from the submontane Atlantic Forest in the states of Pernambuco and Alagoas (Brazil). Based on the zingiberoid growth form it is morphologically similar to M. anderssoniana and M. zingiberina, differing mainly in the shape of the leaf blade (lanceolate to oblong or ovate respectively vs. narrow-lanceolate) and number of calli in the callose staminode (one prominent callus vs. two prominent calli). It is further differentiated from M. anderssoniana by being larger plants (up to 1.8 m tall vs. up to
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Frimpong-Anin, Kofi, Michael K. Adjaloo, Peter K. Kwapong, and William Oduro. "Structure and Stability of Cocoa Flowers and Their Response to Pollination." Journal of Botany 2014 (March 2, 2014): 1–6. http://dx.doi.org/10.1155/2014/513623.

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This study investigated the position of staminodes around the style of cocoa flowers and the stability of cocoa flowers relative to pollination and seasonality. Cocoa flowers were categorized into converging, ≤1.20 mm; parallel, 1.21–2.40 mm, and splay ≥2.41 mm, depending on the distance between the staminode and style. Some flowers were hand pollinated while others were not and were excluded from insect visitors. Proportions of flowers of converging (56.0%), parallel (37.5%), and splay (6.5%) remained similar along the vertical plane of cocoa trees. Although pollination rates of flowers with
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Zhang, Hui-Yan, Xiao-Ling Yan, Shan Su, Yu-Qu Zhang, Yi Ren, and Xiao-Hui Zhang. "Androecium development and staminode diversity of Cocculus orbiculatus (Menispermaceae)." Flora 265 (April 2020): 151573. http://dx.doi.org/10.1016/j.flora.2020.151573.

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Whitlock, Barbara A., Amanda M. Hale, Jane L. Indorf, and Carolyn F. Wilkins. "Polyphyly of Rulingia and Commersonia (Lasiopetaleae, Malvaceae s.l.)." Australian Systematic Botany 24, no. 5 (2011): 215. http://dx.doi.org/10.1071/sb09030.

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The primarily Australian genera Rulingia R.Br. and Commersonia J.R. & G.Forst., as currently circumscribed, are distinguished from each other by the number of antisepalous staminodes. Although most taxonomic treatments recognise Rulingia and Commersonia as separate genera, recent phylogenetic analyses and morphological observations have suggested that neither is monophyletic. In the present study, we test the monophyly of both genera with a phylogenetic analysis of 80 individuals of Rulingia and Commersonia, representing 46 species, using three chloroplast markers. Our analyses recovered t
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Dissertations / Theses on the topic "Staminode"

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Walker-Larsen, Jennifer. "The functional significance of staminodes, with special reference to Penstemon (Scrophulariaceae)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ31377.pdf.

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QUARANTA, PAMELA. "Unveiling the biological role of human circulating Hematopoietic Stem and Progenitor cells." Doctoral thesis, Università Vita-Salute San Raffaele, 2022. http://hdl.handle.net/20.500.11768/128257.

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Although mostly resident in the bone marrow (BM), few circulating HSPC (cHSPC) regularly traffic in the peripheral blood (PB) of un-mobilized subjects. Mainly descriptive studies have been published so far about this rare population in humans, and a complete evaluation of their composition, functional features and hierarchical relationship with respect to BM HSPC is still missing. In the present study, we phenotypically characterized cHSPC composition during aging, by applying multi-parametric flow cytometry on 114 PB and, as control, 48 BM samples of healthy donors (HD) of diverse age. These
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Simpson, Gregory. "Cracking the niche: An investigation into the impact of climatic variables on germination of the rare shrub Verticordia staminosa subspecies staminosa (Myrtaceae)." Thesis, Simpson, Gregory (2011) Cracking the niche: An investigation into the impact of climatic variables on germination of the rare shrub Verticordia staminosa subspecies staminosa (Myrtaceae). Honours thesis, Murdoch University, 2011. https://researchrepository.murdoch.edu.au/id/eprint/8485/.

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The influence of annual rainfall and a Mediterranean climate in structuring the indigenous vegetation in the Southwest Botanical Province of Western Australia has long been recognised, especially in relation to seedling germination during the cooler wet season. However, over the past decade numerous authors have hypothesised that a number of climatic factors, including variability in the timing and intensity of rainfall events, may be drivers of germination. Verticordia staminosa subsp. staminosa (Myrtaceae) is a naturally rare narrow range endemic shrub that occurs on only one granite inselbe
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Paula, Orlando Cavalari de [UNESP]. "Morfologia e desenvolvimento floral em Croton L. e Astraea Klotzsch (Euphorbiaceae sensu stricto)." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/100664.

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Made available in DSpace on 2014-06-11T19:30:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-06-28Bitstream added on 2014-06-13T21:01:48Z : No. of bitstreams: 1 paula_oc_dr_rcla.pdf: 2531374 bytes, checksum: a92e198da4df4bf433952e2e684de112 (MD5)<br>Croton agrupa cerca de 1.200 espécies portadoras de flores bissexuais e representa um grupo complexo, sob o ponto de vista taxonômico e morfológico. Astraea, recentemente separada de Croton e com quem divide inúmeras características morfológicas, é um gênero pouco estudado. A natureza dos verticilos florais, especialmente nectários e es
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Paula, Orlando Cavalari de. "Morfologia e desenvolvimento floral em Croton L. e Astraea Klotzsch (Euphorbiaceae sensu stricto) /." Rio Claro : [s.n.], 2010. http://hdl.handle.net/11449/100664.

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Resumo: Croton agrupa cerca de 1.200 espécies portadoras de flores bissexuais e representa um grupo complexo, sob o ponto de vista taxonômico e morfológico. Astraea, recentemente separada de Croton e com quem divide inúmeras características morfológicas, é um gênero pouco estudado. A natureza dos verticilos florais, especialmente nectários e estruturas filamentosas das flores pistiladas, é um assunto bastante controvertido, nos dois gêneros. Estudos com as flores de Croton mostram o desenvolvimento do óvulo e da semente e outros apenas descrevem a morfologia do grão de pólen maduro. Entretanto
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JACOB, AURELIEN MARC FLORENT. "IMPROVING TARGETED GENE EDITING IN HEMATOPOIETIC STEM CELLS FOR CLINICAL TRANSLATION." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2021. http://hdl.handle.net/10281/304800.

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Negli ultimi anni, l’editing genetico nelle cellule staminali/progenitrici ematopoietiche umane (HSPC) per il trattamento di malattie genetiche del sangue è migliorato drasticamente trasformando inserzioni genetiche casuali in precise e mirate modificazioni del genoma. La modifica mirata dei geni mutati ereditati consente la correzione in situ e la ricostituzione funzionale con il mantenimento del controllo endogeno dell'espressione. Recentemente abbiamo dimostrato che sia le rotture del DNA a doppio filamento indotte dall’editing che il genoma stesso dell’Adeno-Associated Virus 6 (AAV) innesc
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Pedersoli, Giseli Donizete. "Desenvolvimento floral de Parkia multijuga e Stryphnodendron adstringens, espécies andromonoicas de Leguminosae (Mimosoideae)." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/59/59139/tde-07082013-150119/.

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Flores díclinas originam-se da ausência funcional/estrutural de um dos verticilos envolvidos na reprodução, seja desde o início ou no decorrer do desenvolvimento dos primórdios. Este trabalho visa ao estudo do desenvolvimento floral de Parkia multijuga e Stryphnodendron adstringens, leguminosas andromonoicas, a fim de verificar se as flores estaminadas se formam por ausência do carpelo desde o início do desenvolvimento ou por seu aborto no decorrer do desenvolvimento. Botões florais de vários tamanhos e flores foram coletados e processados para observações em microscopia eletrônica de varredur
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Lin, Yu-chi, and 林玉琪. "The Study of Development of Staminate Flower and Pollen in Luffa cylindrica (L.) Roem." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/64496202077795624640.

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碩士<br>國立臺灣大學<br>植物學系<br>86<br>Abstract The changes of staminate flower and pollen during different developmental stages of Luffa cylindrica (L.) Roem were studied with light microscope, scanning and transmission electron microscope. Floral primodium initiated from infloresence primodium in a spiral order. Five sepal primodia intiated from the edge of a floral primodium in a spiral order, too. Then five petal primodia arised simultaneously in a whorl arrangement, fol
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Lin, Chiou-Huey, and 林秋惠. "The study of staminate and hermaphrodite flowers on floral development and microspogenesis in Koelreuteria henryi Dummer (Sapindaceae)." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/12614571712431216873.

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碩士<br>國立臺灣大學<br>生態學與演化生物學研究所<br>95<br>Koelreuteria henryi Dummer (Sapindaceae) is a deciduous tree and endemic to Taiwan. This species has been widely cultivated as side tree. The inflorescence is thyrse mixed rhipidium. The flower is polygamous-andromonoecious with staminate and hermaphrodite flowers on the same plant, fertile and steril pollen grains are produced respectively. In this study, with the aids of LM, TEM, SEM and histochemical observations, it is attempted to reveal (1) the floral initiation, flowers'' sex differentiation and sex expression in the inflorescence; (2) the similarit
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Mascolo, Massimo. "Rapporto fra compartimento staminale e regolazione epigenetica della compattazione cromatinica ed aggressività biologica del melanoma maligno cutaneo." Tesi di dottorato, 2009. http://www.fedoa.unina.it/3171/1/Massimo_Mascolo_tesi_Ph.D.pdf.

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Books on the topic "Staminode"

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Brown, Addison. An Illustrated Flora of the Northern United States: Canada and the British Possessions From Newfoundland to the Parallel of the Southern Boundary of ... Atlantic Ocean Westward to the 102D Meridian. Arkose Press, 2015.

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Britton, Nathaniel Lord, and Addison Brown. An Illustrated Flora Of The Northern United States: Canada And The British Possessions From Newfoundland To The Parallel Of The Southern Boundary Of ... Ocean Westward To The 102d Meridian, Volume 2. Arkose Press, 2015.

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Book chapters on the topic "Staminode"

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Guillou, Caroline, and Dorothée Verdier. "Theobroma cacao: Somatic Embryogenesis." In Methods in Molecular Biology. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-2485-2_6.

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AbstractA two-step process combining direct and indirect somatic embryogenesis, on solid and liquid medium, respectively is described for Theobroma cacao L. Staminodes and petals from unopened bud flowers are used to induce primary direct embryos. Then, these primary embryos are cut to produce embryogenic calli which will develop secondary embryos. This step of indirect SE allows us to produce large quantities of embryos and to do mass propagation using liquid culture medium. Despite a very strong clone dependency and high batch-to-batch variability, about 80% of T. cacao cultivars respond to somatic embryogenesis and can be propagated by this method.
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Tucker, Shirley C., and J. Allen Bourland. "Ontogeny of staminate and carpellate flowers of Schisandra glabra (Schisandra)." In Early Evolution of Flowers. Springer Vienna, 1994. http://dx.doi.org/10.1007/978-3-7091-6910-0_8.

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"Staminode(s)." In Encyclopedia of Genetics, Genomics, Proteomics and Informatics. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6754-9_16114.

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"staminode, n." In Oxford English Dictionary, 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/1022937841.

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"longitudinally dissected. f. Staminode and two stamens in staminate flower. g. Pistillate flower longitudinally dissected, h and i. Floral diagram of staminate and pistillate flowers, respectively. j. Fruiting branch, st.=staminode. Drawn by Priscilla Fawcett. From Correll and Correll 1982." In Florida Ethnobotany. CRC Press, 2004. http://dx.doi.org/10.1201/9780203491881-43.

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"staminody, n." In Oxford English Dictionary, 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/7017597392.

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"staminose, adj." In Oxford English Dictionary, 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/4563753485.

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"Staminate Flower." In Encyclopedia of Genetics, Genomics, Proteomics and Informatics. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6754-9_16115.

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"staminate, v." In Oxford English Dictionary, 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/2961169010.

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"staminate, adj." In Oxford English Dictionary, 3rd ed. Oxford University Press, 2023. http://dx.doi.org/10.1093/oed/1102692895.

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