Log in

Relevant bibliographies by topics / Dichogamy / Journal articles

Journal articles on the topic 'Dichogamy'

To see the other types of publications on this topic, follow the link: Dichogamy.

Author: Grafiati

Published: 4 June 2021

Last updated: 29 July 2024

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Dichogamy.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Dias, M. A., and R. M. C. S. Ratnayake. "Variation in dichogamy and myophily in two dioecious Bridelia species (Phyllanthaceae)." Australian Journal of Botany 69, no. 5 (2021): 301. http://dx.doi.org/10.1071/bt21020.

Full text

Abstract:

Duodichogamy and multi-cycle dichogamy are rare forms of temporal separation of staminate and pistillate reproductive functions in angiosperms. We studied the floral phenology, breeding system and pollination of Bridelia retusa (L.) A.Juss. and Bridelia moonii Thwaites, with a particular focus on the alternation of sexual phases to determine variation in their dichogamy. Three dichogamy patterns were identified in B. retusa, including one-cycle dichogamy (staminate → pistillate or pistillate → staminate), duodichogamy (staminate → pistillate → staminate), multi-cycle dichogamy (repeated flowering cycles alternating between staminate and pistillate) and pure staminates. Except for multi-cycle dichogamy, the other dichogamy patterns were prevalent in B. moonii. This study speculated floral mimicry system in Bridelia associated with blowflies.

APA, Harvard, Vancouver, ISO, and other styles

2

Bertin, Robert I., and Christian M. Newman. "Dichogamy in angiosperms." Botanical Review 59, no. 2 (April 1993): 112–52. http://dx.doi.org/10.1007/bf02856676.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Alexander, Lisa W., and Keith E. Woeste. "Phenology, dichogamy, and floral synchronization in a northern red oak (Quercus rubra) seed orchard." Canadian Journal of Forest Research 46, no. 5 (May 2016): 629–36. http://dx.doi.org/10.1139/cjfr-2015-0312.

Full text

Abstract:

We developed a novel scoring system to assess spring phenology in a northern red oak (Quercus rubra L.) clonal seed orchard. The system was used to score from 304 to 364 ramets for three reproductive seasons and to place clones into early, intermediate, and late phenology classes. Although the absolute number of clones in each phenological class changed from year to year, the overall order of clonal flowering was highly stable (rs = 0.67, p < 0.001). Early-flowering clones flowered significantly longer than later flowering clones in all 3 years. Dichogamy was present in the orchard, with male flowers of a clone emerging from 1.4 to 3.0 d sooner than its female flowers. Mean dichogamy values for individual clones ranged from 0.0 to 4.9 (± 1.3) d. Year strongly influenced a clone’s dichogamy value (F = 6.0, p = 0.004), whereas genotype had no influence. The mean overall phenological synchronicity for the 3 years of observations was 0.30 ± 0.01 or about 30% overlap between the time when females were receptive and males were shedding pollen. This study represents the first effort to quantify phenology in an artificial population of northern red oak, and it provides a snapshot of the current relationship between temperature, phenology, and floral synchronization.

APA, Harvard, Vancouver, ISO, and other styles

4

Ma, Guo-Hua, Eric Bunn, Jing-Feng Zhang, and Guo-Jiang Wu. "Evidence of Dichogamy in Santalum album L." Journal of Integrative Plant Biology 48, no. 3 (March 2006): 300–306. http://dx.doi.org/10.1111/j.1744-7909.2006.00201.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Medan, D., and G. Ponessa. "Movement-assisted dichogamy in Atamisquea emarginata (Capparaceae)." Plant Systematics and Evolution 236, no. 3-4 (February 1, 2003): 195–205. http://dx.doi.org/10.1007/s00606-002-0241-x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Worley, Ray E., Sue K. Dove, Ben G. Mullinix, and Morris Smith. "Long-term dichogamy of 80 pecan cultivars." Scientia Horticulturae 49, no. 1-2 (January 1992): 93–101. http://dx.doi.org/10.1016/0304-4238(92)90146-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

7

Azad, Rumana, K. L. Wasantha Kumara, Gamini Senanayake, R. A. A. K. Ranawaka, D. K. N. G. Pushpakumara, and Sudarshanee Geekiyanage. "Flower morphological diversity of cinnamon (Cinnamomum verum Presl) in Matara District, Sri Lanka." Open Agriculture 3, no. 1 (July 1, 2018): 236–44. http://dx.doi.org/10.1515/opag-2018-0025.

Full text

Abstract:

Abstract The cinnamon flowers exhibit protogynous dichogamy with 2 flower types “Type A” and “Type B” which first flowers during morning and evening respectively. This floral cycle causes a temporal barrier to the maintenance of elite breeding material and for hybridization with desired parents. Determination of variation in flower and inflorescence morphology can shed light on functional diversity in “Type A” and “Type B” flowers. In order to study these variations, a survey of cultivated cinnamon lands and wild habitats was conducted in fifteen locations in the Matara district. Peduncle length (PDL), flower length (FL), flower width (FW), and floral tube length (FTL) varied among cinnamon accessions collected. The variation in tepal shape was distinct: the two whorls of tepals of a single flower exhibited two shapes. The current investigation of differences in inflorescence, floral morphology and floral abnormalities of Cinnamomum verum provides information about their diversity, and recommends molecular analysis to further determine the genetic basis of two flower types in progynous dichogamy.

APA, Harvard, Vancouver, ISO, and other styles

8

Aizen, Marcelo A., and Alicia Basilio. "Within and among flower sex-phase distribution in Alstroemeria aurea (Alstroemeriaceae)." Canadian Journal of Botany 73, no. 12 (December 1, 1995): 1986–94. http://dx.doi.org/10.1139/b95-213.

Full text

Abstract:

Although dichogamy is a prevailing feature of the angiosperms, the simultaneous change from male to female phases among hermaphrodite flowers within a plant (i.e., synchronous protandry) has been reported for only a few families (e.g., Araliaceae, Umbelliferae). Here we present an example of synchronous protandry at the ramet level in the Alstroemeriaceae. Dichogamy was analyzed in clonal Alstroemeria aurea at the flower, ramet, and at the whole flowering patch level. Alstroemeria aurea is self-compatible but totally dependent on biotic agents for pollen transfer. There was evidence of strong inbreeding depression expressed during seed development. Comparisons of seed set in open-pollinated flowers with those obtained after hand selfing and outcrossing resulted in a selfing rate of 0.3. At the flower level protandry was complete. The male phase lasted about 4 days and the female phase lasted about 3 days. Between the female and male phase, there was an approximately 1-day long "neuter" phase. Flowering ramets produce a terminal inflorescence bearing one or more whorls of flowers. Within a ramet, flowers of the same order opened within a period of 1–2 days, and male and female phases of different flowers did not overlap. When inflorescences held two whorls of flowers, the ramet went through two alternating non-overlapping male–female cycles. Using spatial autocorrelation techniques, we found little evidence for pairs of neighboring ramets expressing the same sexual phase beyond random expectations at any scale ranging between 0.25 to 15 m. By ensuring pollen interchange between flowering ramets, synchronized protandry at the ramet level could be an important feature in reducing selfing in A. aurea. Key words: Alstroemeria aurea, dichogamy, synchronous protandry, inbreeding depression.

APA, Harvard, Vancouver, ISO, and other styles

9

Wells, Mark S., and David G. Lloyd. "Dichogamy, gender variation and bet-hedging inPseudowintera colorata." Evolutionary Ecology 5, no. 3 (July 1991): 310–26. http://dx.doi.org/10.1007/bf02214235.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Grauke, L. J., and Tommy E. Thompson. "THE EFFECT OF SEASON ON DICHOGAMY PATTERNS IN PECAN." HortScience 28, no. 4 (April 1993): 266A—266. http://dx.doi.org/10.21273/hortsci.28.4.266a.

Full text

Abstract:

Thirteen cultivars of pecan [Carya illinoinensis (Wangenh.) K. Koch] were monitored for bud break, pollen shed and stigma receptivity for 4 years at LSU Pecan Station, Robson, LA. Cultivars were generally consistent in displaying clear patterns of protogyny or protandry, although patterns were uncertain for some cultivars in some years. Mean dates of cultivar phenology varied significantly by year. Years with warm winter and spring temperatures had earlier seasons of growth and flowering than years with cooler temperatures. The duration of pollen shed and stigma receptivity varied between years. Protogynous cultivars, as a group, had greater bloom overlap than protandrous cultivars, although overlap varied between years for both dichogamy classes. The sequence of cultivar flowering relative to other cultivars varied between years, resulting in variable amounts of bloom overlap between cultivars in different years.

APA, Harvard, Vancouver, ISO, and other styles

11

PELLMYR, OLLE. "Multiple sex expressions in Cimicifuga simplex: dichogamy destabilizes hermaphroditism." Biological Journal of the Linnean Society 31, no. 2 (June 1987): 161–74. http://dx.doi.org/10.1111/j.1095-8312.1987.tb01987.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Lord, JM. "Hermaphroditism and dichogamy inStilbocarpa polaris(Araliaceae) on Campbell Island." New Zealand Journal of Botany 50, no. 1 (March 2012): 89–93. http://dx.doi.org/10.1080/0028825x.2011.638645.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Mallick, Stephen A. "Facultative dichogamy and reproductive assurance in partially protandrous plants." Oikos 95, no. 3 (December 2001): 533–36. http://dx.doi.org/10.1034/j.1600-0706.2001.950318.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Ramirez, Nelson, and Paul E. Berry. "Effect of sexual systems and dichogamy on levels of abortion and biomass allocation in plant reproductive structures." Canadian Journal of Botany 75, no. 3 (March 1, 1997): 457–61. http://dx.doi.org/10.1139/b97-049.

Full text

Abstract:

The levels of abortion at three stages (ovule, seed, and flower–fruit) and biomass allocation to flowers, seeds, and fruits were determined in 231 species from five Venezuelan plant communities. These values were analyzed as a function of the sexual systems of the plants and the presence of dichogamy. In this study, the only significant difference between sexual systems was in the level of ovule abortion, which was greater in dioecious and hermaphroditic species than in monoecious and andromonoecious species. Species with protandrous or protogynous flowers had higher seed set and lower levels of aborted ovules and aborted flowers and fruits than species with adichogamous flowers. These results indicate that hermaphroditic plants do not compensate for their inability to independently control the number of male and female flowers by producing an excess of flowers that function mainly as pollen donors. On the other hand, the temporal separation of male and female functions in hermaphroditic and monoecious species may contribute to increased seed and fruit set by enhancing reallocation of assimilates from floral organs or flowers to fruit formation in time, and by reducing pollen–stigma interference within plants. Key words: fruit abortion, ovule abortion, dichogamy, sexuality, biomass allocation.

APA, Harvard, Vancouver, ISO, and other styles

15

Hildesheim, Laura S., Øystein H. Opedal, W. Scott Armbruster, and Christophe Pélabon. "Fitness costs of delayed pollination in a mixed-mating plant." Annals of Botany 124, no. 5 (August 23, 2019): 869–81. http://dx.doi.org/10.1093/aob/mcz141.

Full text

Abstract:

Abstract Background and Aims To predict the evolutionary consequences of pollinator declines, we need to understand the evolution of delayed autonomous self-pollination, which is expected to evolve as a mechanism of reproductive assurance when cross-pollination becomes unreliable. This involves estimating the costs of increased levels of selfing as well as those associated with floral senescence. Methods We studied the mechanisms and costs of delayed self-pollination in the mixed-mating vine Dalechampia scandens (Euphorbiaceae) by first assessing among-population variation in herkogamy and dichogamy, which together determine the rate and timing of autonomous self-pollination. We then tested whether floral longevity responds plastically to delayed pollination. Finally, we assessed the costs of delayed self-pollination in terms of seed number and size, explicitly separating inbreeding depression from effects of floral senescence. Key Results Herkogamy varied extensively, while variation in dichogamy was more limited. Unpollinated blossoms increased their longevity, but seed quantity and quality decreased with increasing delays in pollination, independently of inbreeding depression. Conclusions In D. scandens, earlier autonomous selfing is facilitated by reduced herkogamy rather than reduced protogyny, providing reproductive assurance while maintaining the possibility for outcrossing events. Effective early autonomous self-pollination may evolve under reduced cross-pollination reliability in response to costs associated with floral senescence.

APA, Harvard, Vancouver, ISO, and other styles

16

Gamble, Devin E., Megan Bontrager, and Amy L. Angert. "Floral trait variation and links to climate in the mixed-mating annual Clarkia pulchella." Botany 96, no. 7 (July 2018): 425–35. http://dx.doi.org/10.1139/cjb-2017-0234.

Full text

Abstract:

The benefits of self-fertilization can vary across environments, leading to selection for different reproductive strategies and influencing the evolution of floral traits. Although stressful conditions have been suggested to favour self-pollination, the role of climate as a driver of mating-system variation is generally not well understood. Here, we investigate the contributions of local climate to intraspecific differences in mating-system traits in Clarkia pulchella Pursh in a common-garden growth chamber experiment. We also tested for plastic responses to soil moisture with watering treatments. Herkogamy (anther–stigma spacing) correlated positively with dichogamy (timing of anther–stigma receptivity) and date of first flower, and northern populations had smaller petals and flowered earlier in response to experimental drought. Watering treatment alone had little effect on traits, and dichogamy unexpectedly decreased with annual precipitation. Populations also differed in phenological response to watering treatment, based on precipitation and winter temperature of their origin, indicating that populations from cool and dry sites have greater plasticity under different levels of moisture stress. While some variation in floral traits is attributable to climate, further investigation into variation in pollinator communities and the indirect effects of climate on mating system can improve our understanding of the evolution of plant mating.

APA, Harvard, Vancouver, ISO, and other styles

17

Gao, J., Y. Z. Xiong, and S. Q. Huang. "Effects of floral sexual investment and dichogamy on floral longevity." Journal of Plant Ecology 8, no. 2 (March 26, 2015): 116–21. http://dx.doi.org/10.1093/jpe/rtv011.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Routley, Matthew B., Robert I. Bertin, and Brian C. Husband. "Correlated Evolution of Dichogamy and Self‐Incompatibility: A Phylogenetic Perspective." International Journal of Plant Sciences 165, no. 6 (November 2004): 983–93. http://dx.doi.org/10.1086/423881.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Jonsson, Olle, Gabrielle Rosquist, and Bjorn Widen. "Operation of dichogamy and herkogamy in five taxa of Pulsatilla." Ecography 14, no. 4 (October 1991): 260–71. http://dx.doi.org/10.1111/j.1600-0587.1991.tb00660.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Bhardwaj, Michael, and Christopher G. Eckert. "Functional analysis of synchronous dichogamy in flowering rush, Butomus umbellatus (Butomaceae)." American Journal of Botany 88, no. 12 (December 2001): 2204–13. http://dx.doi.org/10.2307/3558382.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Ramírez, Nelson. "Plant sexual systems, dichogamy, and herkogamy in the Venezuelan Central Plain." Flora - Morphology, Distribution, Functional Ecology of Plants 200, no. 1 (April 2005): 30–48. http://dx.doi.org/10.1016/j.flora.2005.01.002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Franco-Saldarriaga, Alejandra, and María Argenis Bonilla-Gómez. "Sexual reproductive strategies of Puya nitida (Bromeliaceae) in a Colombian paramo, a tropical high-elevation ecosystem." Journal of Tropical Ecology 36, no. 6 (November 2020): 258–66. http://dx.doi.org/10.1017/s0266467420000218.

Full text

Abstract:

AbstractThe low availability of pollinators in high-elevation ecosystems can lead to flowering plants showing different adaptive responses in order to assure their reproductive success. Shifts toward autogamy and asexual reproductive rates (the reproductive assurance hypothesis) and the compensatory measures to maintain outcrossing such as flower longevity and more prolonged pistil receptivity (the increased pollination probability hypothesis) are some of these responses. Several studies have tested both hypotheses, but investigations of plants of tropical alpine environments such as paramos that support these assumptions are still scarce. Puya nitida, an endemic Colombian plant species distributed in the paramo and subparamo in the Eastern Cordillera of Cundinamarca department, was used as a case study to test its reproductive characteristics that assure its sexual reproduction. We analysed the species’ floral morphology and development, its phenological patterns and its plant mating-system. We found that Puya nitida showed floral characteristics that promote pollination by birds, herkogamy and dichogamy, flowers and receptive stigmas with 9 and 12 days of longevity, respectively and an index of self-incompatibility that shows that it is mostly self-incompatible. We found a synchronic phenological pattern with an annual frequency and an intermediate duration with a peak in the period of lowest rainfall. Our results suggested that longer floral development, prolonged stigma receptivity, herkogamy and dichogamy and self-incompatibility might assure reproductive success, since the cross-pollination might be favoured when few pollinators are in attendance. Overall, these reproductive mechanisms add evidence to the increased pollination probability hypothesis, specifically for a plant species of a tropical high-elevation ecosystem where pollinators are scarce.

APA, Harvard, Vancouver, ISO, and other styles

23

Orosz-Kovacs, Zsuzsanna, Miklos Faust, Attila Borhidi, Laszlo Gy Szabo, and Agnes Farkas. "Endogenous Rhythm in Flowers of Stone Fruits." HortScience 33, no. 3 (June 1998): 455d—455. http://dx.doi.org/10.21273/hortsci.33.3.455d.

Full text

Abstract:

It is known that the success of pollination of entomogam, autosterile stone fruits depends on attractiveness of flowers, pollen, and nectar production. In addition to this a complete harmony is necessary between the pollen donor and receiver in the volume of intrafloral secretion, chemical composition, and timing of appearance of attractants. Our investigation shows that the daily production in stone fruits follows a set pattern. The 4 × 6-h rhythm (secretion four times, 6 h apart per day) usually indicates homogamy, whereas a 2 × 12 periodicity indicates dichogamy. Successful pollination is unlikely when endogen rhythm of two cultivars is asynchronized.

APA, Harvard, Vancouver, ISO, and other styles

24

Akca, Y., and S. Mehmet SEN. "THE RELATIONSHIP BETWEEN DICHOGAMY AND YIELD - NUT CHARACTERISTICS IN JUGLANS REGIA L." Acta Horticulturae, no. 442 (April 1997): 215–16. http://dx.doi.org/10.17660/actahortic.1997.442.31.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Inoue, Ken. "Dichogamy, Sex Allocation, and Mating System of Campanula microdonta and C. punctata." Plant Species Biology 5, no. 2 (December 1990): 197–203. http://dx.doi.org/10.1111/j.1442-1984.1990.tb00179.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Dai, Can, and Laura F. Galloway. "Do dichogamy and herkogamy reduce sexual interference in a self‐incompatible species?" Functional Ecology 25, no. 1 (October 13, 2010): 271–78. http://dx.doi.org/10.1111/j.1365-2435.2010.01795.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Navarro, Luis. "Is the dichogamy ofSalvia verbenaca (Lamiaceae) an effective barrier to self-fertilization?" Plant Systematics and Evolution 207, no. 1-2 (1997): 111–17. http://dx.doi.org/10.1007/bf00985212.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Gu, Wei, Miao Ma, and Jun-Feng Fan. "Dichogamy and Style Curvature Avoid Self-Pollination in Eremurus altaicus." Current Science 114, no. 02 (January 25, 2018): 387. http://dx.doi.org/10.18520/cs/v114/i02/387-391.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Roldán, Joanna Soledad, and Lorena Ashworth. "Disentangling the role of herkogamy, dichogamy and pollinators in plant reproductive assurance." Plant Ecology & Diversity 11, no. 3 (May 4, 2018): 383–92. http://dx.doi.org/10.1080/17550874.2018.1517395.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

NARBONA, E. "Dichogamy and Sexual Dimorphism in Floral Traits in the Andromonoecious Euphorbia boetica." Annals of Botany 95, no. 5 (February 8, 2005): 779–87. http://dx.doi.org/10.1093/aob/mci077.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

MEDAN, D. "Fecundity Effects of Dichogamy in an Asynchronically Flowering Population: a Genetic Model." Annals of Botany 81, no. 3 (March 1998): 373–83. http://dx.doi.org/10.1006/anbo.1997.0556.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Bertin, Robert I. "INCIDENCE OF MONOECY AND DICHOGAMY IN RELATION TO SELF-FERTILIZATION IN ANGIOSPERMS." American Journal of Botany 80, no. 5 (May 1993): 557–60. http://dx.doi.org/10.1002/j.1537-2197.1993.tb13840.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Galloway, Laura F., Tammy Cirigliano, and Kristina Gremski. "The Contribution of Display Size and Dichogamy to Potential Geitonogamy in Campanula americana." International Journal of Plant Sciences 163, no. 1 (January 2002): 133–39. http://dx.doi.org/10.1086/324556.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Koski, Matthew H., Liao Kuo, Kerstin M. Niedermaier, and Laura F. Galloway. "Timing is everything: Dichogamy and pollen germinability underlie variation in autonomous selfing among populations." American Journal of Botany 105, no. 2 (February 2018): 241–48. http://dx.doi.org/10.1002/ajb2.1025.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Miftakhova, S. A. "Antecological features of Rubus odoratus L. during introduction in the North." Bulletin of the State Nikitsky Botanical Gardens, no. 139 (August 11, 2021): 62–68. http://dx.doi.org/10.36305/0513-1634-2021-139-62-68.

Full text

Abstract:

The article describes the peculiarities of flowering and pollination of an introduced sample of Rubus odoratus in the conditions of the North (Komi Republic). Experiments on controlled pollination have shown that the species is characterized by xenogamy, although there was also idiogamy. The fruits formed through idiogamy had many voids between the drupes, often did not reach maturity, and the seeds were dissimilar. Dichogamy in the form of protandria and partial hercogamy are not an obstacle, but only additional factors that prevent self-pollination. The probable cause of self-sterility is self-incompatibility. R. odoratus has no specific pollination strategy. The main method of pollination of the species is entomophilia, carried out by pollinating insects mainly representatives of three orders: Coleoptera, Diptera and Hymenoptera. R. odoratus is characterized by visual and olfactory attraction.

APA, Harvard, Vancouver, ISO, and other styles

36

Santos, A., and A. Silva. "DICHOGAMY AND FLOWERING PERIODS OF ELEVEN HAZELNUT VARIETIES IN NORTHERN PORTUGAL - EIGHT YEARS OF OBSERVATIONS." Acta Horticulturae, no. 351 (January 1994): 211–14. http://dx.doi.org/10.17660/actahortic.1994.351.20.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Lloyd, David G., and C. J. Webb. "The avoidance of interference between the presentation of pollen and stigmas in angiosperms I. Dichogamy." New Zealand Journal of Botany 24, no. 1 (January 1986): 135–62. http://dx.doi.org/10.1080/0028825x.1986.10409725.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Naghiloo, Somayeh, and Regine Claßen-Bockhoff. "A combination of dichogamy and herkogamy mediates reproductive success in the desert shrub Zygophyllum fabago." Journal of Arid Environments 182 (November 2020): 104279. http://dx.doi.org/10.1016/j.jaridenv.2020.104279.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Rosas-Guerrero, Víctor, Diego Hernández, and Eduardo Cuevas. "Influence of pollen limitation and inbreeding depression in the maintenance of incomplete dichogamy inSalvia elegans." Ecology and Evolution 7, no. 12 (April 27, 2017): 4129–34. http://dx.doi.org/10.1002/ece3.2827.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Kalisz, Susan, April Randle, David Chaiffetz, Melisa Faigeles, Aileen Butera, and Craig Beight. "Dichogamy correlates with outcrossing rate and defines the selfing syndrome in the mixed-mating genus Collinsia." Annals of Botany 109, no. 3 (October 6, 2011): 571–82. http://dx.doi.org/10.1093/aob/mcr237.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Endress, Peter K. "The evolution of floral biology in basal angiosperms." Philosophical Transactions of the Royal Society B: Biological Sciences 365, no. 1539 (February 12, 2010): 411–21. http://dx.doi.org/10.1098/rstb.2009.0228.

Full text

Abstract:

In basal angiosperms (including ANITA grade, magnoliids, Choranthaceae, Ceratophyllaceae) almost all bisexual flowers are dichogamous (with male and female functions more or less separated in time), and nearly 100 per cent of those are protogynous (with female function before male function). Movements of floral parts and differential early abscission of stamens in the male phase are variously associated with protogyny. Evolution of synchronous dichogamy based on the day/night rhythm and anthesis lasting 2 days is common. In a few clades in Magnoliales and Laurales heterodichogamy has also evolved. Beetles, flies and thrips are the major pollinators, with various degrees of specialization up to large beetles and special flies in some large-flowered Nymphaeaceae, Magnoliaceae, Annonaceae and Aristolochiaceae. Unusual structural specializations are involved in floral biological adaptations (calyptras, inner staminodes, synandria and food bodies, and secretory structures on tepals, stamens and staminodes). Numerous specializations that are common in monocots and eudicots are absent in basal angiosperms. Several families are poorly known in their floral biology.

APA, Harvard, Vancouver, ISO, and other styles

42

Mukhopadhyay, Amritendu, and Suhel Quader. "Fine‐tuned spatiotemporal dynamics of sporophylls in movement‐assisted dichogamy: A study on Clerodendrum infortunatum." Plant Species Biology 37, no. 2 (February 9, 2022): 209–17. http://dx.doi.org/10.1111/1442-1984.12367.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Sargent, Risa D., Mohammad A. Mandegar, and Sarah P. Otto. "A MODEL OF THE EVOLUTION OF DICHOGAMY INCORPORATING SEX-RATIO SELECTION, ANTHER-STIGMA INTERFERENCE, AND INBREEDING DEPRESSION." Evolution 60, no. 5 (May 2006): 934–44. http://dx.doi.org/10.1111/j.0014-3820.2006.tb01172.x.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Sargent, Risa D., Mohammad A. Mandegar, and Sarah P. Otto. "A MODEL OF THE EVOLUTION OF DICHOGAMY INCORPORATING SEX-RATIO SELECTION, ANTHER-STIGMA INTERFERENCE, AND INBREEDING DEPRESSION." Evolution 60, no. 5 (2006): 934. http://dx.doi.org/10.1554/05-389.1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Narbona, Eduardo, Pedro L. Ortiz, and Montserrat Arista. "Linking Self-Incompatibility, Dichogamy, and Flowering Synchrony in Two Euphorbia Species: Alternative Mechanisms for Avoiding Self-Fertilization?" PLoS ONE 6, no. 6 (June 2, 2011): e20668. http://dx.doi.org/10.1371/journal.pone.0020668.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Wood, Bruce W. "Cross-pollination within Pecan Orchards." HortScience 31, no. 4 (August 1996): 583d—583. http://dx.doi.org/10.21273/hortsci.31.4.583d.

Full text

Abstract:

Pecan is wind pollinated, exhibits heterodichogamy and are either protandrous (I) or protogynous (II). Orchards are typically established using two complimentary flowering types but with no further scrutiny as to the degree of compatibility of these two types. Additionally, orchards are sometime established with a very low frequency of pollinator. An evaluation of several orchards revealed that yield losses are due to poor pollination is likely common. Data indicate that trees beyond about 46 m (150 feet) from a complementary pollinator exhibit substantial reductions in fruit-set; therefore, large block-type plantings are disadvantaged. Flowering data over several years show that Type I and Type II cultivars are often functionally noncomplementary, suggesting that pecan cultivars should also be identified with a seasonal identification (i.e., early, mid, and late). Data also indicate that dichogamy patterns substantially change as trees age or with abnormally warm or cool springs; hence, pollination patterns will vary depending upon orchard age. Data indicate that orchards should be comprised of 3+ cultivars. RAPD-DNA analysis of “hooked-nuts” indicates that this trait is not reliable as an indicator of selfing.

APA, Harvard, Vancouver, ISO, and other styles

47

Deyto, Rodelina, and Cleofas Cervancia. "Floral Biology and Pollination of Red Hot F1 Hybrid Hot Pepper (Capsicum frutescens x C. annuum) in the Philippines." Philippine Agricultural Scientist 105, no. 2 (June 1, 2022): 135–48. http://dx.doi.org/10.62550/kcd134021.

Full text

Abstract:

The floral biology and pollination of Red Hot F1 variety hot pepper, Capsicum frutescens x C. annuum, were studied in this paper. Its flowers are herkogamous and inodorous, and the pollen and nectar serve as rewards to visitors. Anthesis occurred during morning, from 0600 h to 1000 h and peaked on the second day. The pollen grains are simple and numerous with high viability, 96 ± 1.06%. Receptivity of stigma synchronized with pollen viability. This hot pepper variety is partially protogynous. The asynchronous flowering, dichogamy, and herkogamy in hot pepper are their adaptive strategies to promote outcrossing and for reproductive assurance. Four insect species visited the flowers but only the carpenter bee, Xylocopa sp., and the stingless bee, Tetragonula biroi (Friese), are the true pollinators. The foraging activity, which peaked at 0900 h, synchronized with anthesis. Fruit set in an open-pollinated (87 ± 13.12%) and hand-pollinated plants (84 ± 19.37%) were significantly higher than in the control (26 ± 14.30%). Open-pollinated plants produced fruits and seeds with significantly higher quantity and quality.

APA, Harvard, Vancouver, ISO, and other styles

48

Langenberger, M. W., and A. R. Davis. "Temporal changes in floral nectar production, reabsorption, and composition associated with dichogamy in annual caraway (Carum carvi; Apiaceae)." American Journal of Botany 89, no. 10 (October 1, 2002): 1588–98. http://dx.doi.org/10.3732/ajb.89.10.1588.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Brys, Rein, Bram Geens, Tom Beeckman, and Hans Jacquemyn. "Differences in dichogamy and herkogamy contribute to higher selfing in contrasting environments in the annual Blackstonia perfoliata (Gentianaceae)." Annals of Botany 111, no. 4 (February 13, 2013): 651–61. http://dx.doi.org/10.1093/aob/mct031.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Schvinn, Thays de Assis, Anderson Fernandes de Miranda, and Celice Alexandre Silva. "Reproductive biology of Amasonia obovata Gleason (Laminaceae)." Acta Amazonica 44, no. 4 (December 2014): 427–34. http://dx.doi.org/10.1590/s0044-59672014000400004.

Full text

Abstract:

Floral mechanisms that ensure seed production via autogamy are more likely to occur in species growing in environments where pollination is scarce. Amasonia obovata was studied in the State of Mato Grosso-Brazil, from 2009 to 2012, to analyze the morphological and reproductive characteristics, aside from investigating the association of the reproductive success with the pollinator frequency and identity. The flowering and fruiting of A. obovata was concentrated in a period of five months during the rainy season. The dichogamy in flowers of A. obovata is not clearly defined, since the sexual functions were overlapped in the male and female phases. The species is self-compatible and not apomictic. The fruiting percentage obtained by hand self-pollination did not differ from cross-breeding (F = 0.74, P =0.39). In the observations from 2010 to 2012, a hummingbird (Thalurania furcata) legitimate visited 20-100% of the flowers in the male and female phases on different A. obovata plants. Due to the high frequency, this hummingbird was considered the single potential pollinator of the species. These findings show that a limited availability of pollinators may select for floral traits and plant mating strategies that lead to a system of self-fertilization.

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!