Relevant bibliographies by topics / Hypanthium

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Academic literature on the topic 'Hypanthium'

Author: Grafiati
Published: 4 June 2021
Last updated: 12 June 2025

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Journal articles on the topic "Hypanthium"

1

Kemp, James R., Usher Posluszny, Jean M. Gerrath, and Peter G. Kevan. "Floral development of Rosa setigera." Canadian Journal of Botany 71, no. 1 (1993): 74–86. http://dx.doi.org/10.1139/b93-009.

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The development of the flower of Rosa setigera from initiation to the onset of anthesis is described. Rosa setigera is the only known member of the genus Rosa to exhibit dioecy. Flowers of functionally staminate (male) and functionally carpellate (female) plants appear identical, a condition referred to as cryptic dioecy. Discrete sepals and petals are formed on the floral meristem. As the hypanthium forms, stamens are initiated in alternating whorls on the wall of the hypanthium and continue to develop as the hypanthium extends. Carpel primordia arise individually on the remainder of the floral meristem and show neither adnation to the hypanthial wall nor coalescence to one another as they give rise to the styles and stigmas that are exserted above the hypanthium lip. The only observable fusion in this species appears to be the postgenital fusion of the margins of the carpel primordia to form the enclosed locule. Although historically the hypanthium has been variously interpreted as either axial and (or) appendicular in nature, resulting from congenital fusion of sepals, petals, and stamens, this paper uses a more realistic, testable and functional approach to the development of the hypanthium that is in keeping with current concepts such as process morphology. Key words: Rosa setigera, dioecy, floral development, fusion, hypanthium.
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2

Pusey, P. L., and T. J. Smith. "Relation of Apple Flower Age to Infection of Hypanthium by Erwinia amylovora." Plant Disease 92, no. 1 (2008): 137–42. http://dx.doi.org/10.1094/pdis-92-1-0137.

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Blossom age as related to hypanthial susceptibility to Erwinia amylovora is not well established, but is relevant to disease risk assessment. To test this, detached crab apple blossoms were maintained for various periods and at different temperatures before applying inoculum to hypanthia. Inoculum potential on hypanthia due to wetting was evaluated by subjecting detached stigma-inoculated blossoms (~106 CFU per flower) to varying amounts and durations of simulated rain (or dew) at 14°C. Blossoms of varying age on mature ‘Gala’ apple trees were inoculated on hypanthia with 102, 104, or 106 CFU per flower. In the laboratory, susceptibility decreased with flower age at rates that increased with temperature. Wetness periods up to 12 h resulted in populations on hypanthia of <103 CFU per flower; 24 h of wetness resulted in ~104 or ~105 CFU. A dose response was shown in the orchard, and regression curves indicated steepest decline of susceptibility during initial days after petal expansion. Disease models incorporating a blossom-age component may be effective because they indicate the potential for infection when temperatures favor rapid bacterial growth on stigmas within a window of high hypanthial susceptibility. Further investigation of these relationships could lead to advancements in determining fire blight risk.
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3

Steeves, Taylor A., Margaret W. Steeves, and A. Randall Olson. "Flower development in Amelanchier alnifolia (Maloideae)." Canadian Journal of Botany 69, no. 4 (1991): 844–57. http://dx.doi.org/10.1139/b91-110.

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The development of the flower of Amelanchier alnifolia from initiation to the onset of anthesis is described. Sepals are formed sequentially, but interprimordial zonal growth results in the initiation of the hypanthium. Petals and stamens arise in whorls around the floral meristem as the hypanthium extends. They show neither coalescence nor adnation and do not appear to contribute to the development of the hypanthium. Gynoecial primordia arise individually, give rise to the styles and stigmas, and are joined basally by zonal growth to produce the roof of the ovary. The wall of the inferior ovary is interpreted as a gynoecial hypanthium. It is difficult to determine the extent to which the gynoecial primordia contribute to the development of the ovary. They do not give rise to most of its structure but may be responsible for the initiation of the ovules. There is evidence of postgenital fusion of the septal margins as they converge in the centre of the ovary. The timing of events in floral development is recorded for the locality of the study. The observations are discussed in relation to current theories concerning the nature of the inferior ovary. Key words: Amelanchier, flower, development, inferior ovary, hypanthium.
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4

Belsham, Stephen R., and David A. Orlovich. "Development of the hypanthium and androecium in Acmena smithii and Syzygium australe (Acmena alliance, Myrtaceae)." Australian Systematic Botany 16, no. 5 (2003): 621. http://dx.doi.org/10.1071/sb02036.

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Floral organogeny and development are described for two species of the Acmena alliance: Acmena smithii and Syzygium australe. The Acmena alliance is now regarded as distinct from the fleshy-fruited Myrtoideae s.s. A. smithii develops an hypanthium that resembles that seen in some dry-fruited Myrtaceae but stamen initiation resembles that seen in the fleshy-fruited Luma apiculata. By contrast S. australe has hypanthial development similar to the New Zealand fleshy-fruited Myrtaceae but stamen development resembles that of many dry-fruited Myrtaceae. Both species, therefore, show homoplasy of floral characters with both fleshy and dry-fruited Myrtaceae.
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5

ROMERO, ROSANA, and ANA FLAVIA ALVES VERSIANE. "Microlicia candolleana (Melastomataceae): a new endemic species to the Espinhaço range, Minas Gerais, Brazil." Phytotaxa 261, no. 3 (2016): 275. http://dx.doi.org/10.11646/phytotaxa.261.3.7.

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A new species of Microlicia from Serra do Cipó (southern Espinhaço range, Brazil) is described and illustrated. Microlicia candolleana has branches, leaves, pedicels, hypanthium and sepals covered by spherical, golden glands, sessile leaves with evident nerves on both surfaces and subulate sepals, longer or with the same length as the hypanthium.
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6

Coutinho, Karoline, Marla Ibrahim Uehbe de Oliveira, and Ligia Silveira Funch. "Four new species of Eugenia (Myrtaceae) from the Caatinga and Atlantic Forest of northeastern Brazil." Phytotaxa 234, no. 3 (2015): 215. http://dx.doi.org/10.11646/phytotaxa.234.3.2.

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There are described, illustrated and compared to similar taxa Eugenia caatingicola, E. funchiana, E. coccinea and E. potiraguensis. The first three species occur in areas of caatinga (dryland) vegetation (Bahia and Piauí states),while E. potiraguensis is encountered in the Atlantic Forest (Bahia), Brazil. Eugenia caatingicola can be distinguished from Eugenia subreticula by the texture of the periderm of the older branches, leaf apices retuse, and hypanthium sericeous. Eugenia funchiana is similar to E.dentata, but have undulate leaves, smaller petioles and pedicels, and hypanthium not costate. Eugenia coccinea differs from E. duarteana by having membranaceous leaves, calyx lobes with reddish trichomes at apex, and hypanthium glabrous. Eugenia potiraguensis differs from E. plicata by having central veins glabrous, larger petioles, and calyx lobes equal between them. Additionally, each species is evaluated in its conservation status.
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7

IGLESIAS, DIEGO TAVARES, VALQUÍRIA FERREIRA DUTRA, and RENATO GOLDENBERG. "Behuria mestrealvarensis (Melastomataceae): a new species on an inselberg in Espírito Santo, Brazil." Phytotaxa 255, no. 3 (2016): 281. http://dx.doi.org/10.11646/phytotaxa.255.3.10.

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Behuria mestrealvarensis (Melastomataceae) from the state of Espírito Santo, Brazil, is described, illustrated and compared with B. capixaba, the species most similar to it. Behuria mestrealvarensis differs from B. capixaba by the glabrous petioles and hypanthia, by the solitary flowers or these in simple or compound triads up to 7 flowers, elliptic bracteoles almost the same size of the pedicel and hypanthium, sepals with eciliate margins and ovary apex with trichomes up to 0.5 mm. It occurs in a single locality, on an isolated, ca. 800m elev. inselberg. Due to its restricted occupancy area, fragmented landscape and poor habitat quality, this species must be considered as Critically Endangered according to IUCN criteria.
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8

Marondedze, Claudius, and Ludivine A. Thomas. "Apple Hypanthium Firmness: New Insights from Comparative Proteomics." Applied Biochemistry and Biotechnology 168, no. 2 (2012): 306–26. http://dx.doi.org/10.1007/s12010-012-9774-9.

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9

Judd, Walter S., and Lucas C. Majure. "A revised circumscription and clarification of the taxonomic position of Miconia tetrazygioides (Melastomataceae: miconieae): an endemic to the Massif de la Hotte, Haiti." Journal of the Botanical Research Institute of Texas 15, no. 1 (2021): 67–71. http://dx.doi.org/10.17348/jbrit.v15.i1.1051.

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An investigation of the type material of Miconia tetrazygioides indicates that this species, only known from the type gathering (Ekman H10684), is conspecific with the recently described M. cineana. The two differ vegetatively in no significant characters, showing only a slight difference in the range in variation of leaf width, shape, apex, and margin. The species has been poorly collected, with only a total of five gatherings known, and flowers have yet to be collected; it is endemic to the Massif de la Hotte, of Haiti, occurring in rak bwa from 930 to 1300 m. DNA nucleotide sequences indicate that the species is related to those of the M. decorticans clade, which have moderate-sized to large flowers with more or less constricted hypanthia/calyces. Traditionally, most species of the M. decorticans clade were included within Tetrazygia or Pachyanthus. In contrast the reproductive parts, e.g., calyx, hypanthium, ovary, and fruit, of M. tetrazygioides (incl. M. cineana) are quite small, and its hypanthia/calyces are not constricted, which is why it was originally circumscribed under Miconia rather than the other two mentioned genera.
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10

Williamson, Joshua D., Cameron P. Peace, Frederick A. Bliss, David T. Garner, and Carlos H. Crisosto. "Evidence for a Single Locus Controlling Flesh Color, Senescent Leaf Color, and Hypanthium Color in Peach." Journal of the American Society for Horticultural Science 131, no. 2 (2006): 256–60. http://dx.doi.org/10.21273/jashs.131.2.256.

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The Y locus of peach [Prunus persica (L.) Batsch] controls whether a tree will produce fruit with white or yellow flesh. Flesh color has implications for consumer acceptance and nutritional quality, and improved cultivars of both flesh types are actively sought. This paper focuses on evidence that the flesh color locus also controls senescent leaf color (easily observed in the fall) and hypanthium color. In two progeny populations totaling 115 progeny plus their parents, the three traits co-segregated completely. Trees carrying the dominant allele for white flesh had yellow senescent leaves and yellow hypanthia, while homozygous recessive yellow-fleshed types exhibited orange senescent leaves and orange hypanthia. Senescent leaf color was also measured quantitatively, with major colorimetric differences observed between white-fleshed and yellow-fleshed progeny. Senescent leaf hue angle and reflected light wavelengths of 500 to 560 nm were the parameters most affected by the flesh color locus. Results were verified with 10 white-fleshed and 10 yellow-fleshed cultivars. The findings show that the Y locus in peach controls the type and concentration of carotenoids in multiple organs, including fruit, leaves, and flowers. The ability to discriminate between white and yellow flesh color using a simple visual method, applicable in plants not yet at reproductive maturity, is valuable to breeders wanting to save time, growing space, and money.
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