Results 131 to 140 of about 488 (157)

Evidence of Dichogamy in Santalum album L.

Journal of Integrative Plant Biology, 2006
AbstractFlowering, fruit set, embryological development, and pollination trials were investigated in Santalum album L. Each ovary may have three to four ovules. Microsporogenesis and megasporogenesis in the same flower were synchronized at the earlier stages of flower development.
Guo‐Hua Ma, Eric Bunn, Jing‐Feng Zhang, Guo‐Jiang Wu   +3 more
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Dichogamy, gender variation and bet-hedging inPseudowintera colorata

Evolutionary Ecology, 1991
Temporal patterns of variability in the longevity of the male and female phases of individual flowers and in the gender expression of plants of a dichogamous New Zealand tree,Pseudowintera colorata (Winteraceae), were documented in field studies. Two measures for the duration of phases in a dichogamous flower are distinguished; the nominal phases based
Mark S. Wells, David G. Lloyd
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Is the dichogamy ofSalvia verbenaca (Lamiaceae) an effective barrier to self-fertilization?

Plant Systematics and Evolution, 1997
Though dichogamy is generally interpreted as a means of preventing self-fertilization, the efficiency of this mechanism has been questioned. Little attention has been paid to functional aspects of male/female timing, such as variation over time in pollen germinability and in stigma receptivity.
Luis Navarro, Navarro Luis
exaly   +2 more sources

Dichogamy variation in Gentiana lutea L.

2012
Dichogamy is the temporal separation of the presentation of male and female function within a plant. During last decades there has been increasing interest on the selective forces responsible for this trait and on its significance. Anyhow, the type of dichogamy (protandry vs. protogyny) is normally invariant within species.
ROSSI, MARTINA, FISOGNI, ALESSANDRO, CRISTOFOLINI, GIOVANNI, GALLONI, MARTA   +3 more
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THE RELATIONSHIP BETWEEN DICHOGAMY AND YIELD - NUT CHARACTERISTICS IN JUGLANS REGIA L.

Acta Horticulturae, 1997
The dichogamy is one of the important biological characteristics of walnut. In this study, the dichogamy stability of walnut has been analyzed and investigated blooming period of the same 83 walnut types in the same place in different years. The results showed that blooming sequence of staminate and female flowers was steady in walnut types for ...
Akca, Y, Mehmet, S
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Dichogamie du Plantago lanceolata

Bulletin mensuel - Société botanique de Lyon, 1890
Kieffer . Dichogamie du Plantago lanceolata. In: Bulletin mensuel - Société botanique de Lyon, tome 8, bulletin 1-4, 1890. pp. 33-34.
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Functional analysis of synchronous dichogamy in flowering rush, Butomus umbellatus (Butomaceae)

American Journal of Botany, 2001
Dichogamy is one of the most widespread floral mechanisms in flowering plants and is thought to have evolved to reduce interference between pollen import and export within flowers, especially self‐pollination. Self‐pollination between flowers may also be reduced if dichogamy is synchronous among flowers on an inflorescence. The analysis of dichogamy at
M, Bhardwaj, C G, Eckert
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Pelorisation. Dimorphismus. Trimorphismus. Dichogamie

1885
Man beobachtet nicht selten bei manchen Bluthen eine absonderliche, gewohnlich ebenmassige, aber zuweilen auch zur Monstrositat ausartende Formentwickelung theils durch Verlangerung der Axe, theils durch Vervielfaltigung der Bluthentheile oder Umwandlung eines Bluthenblattkreises in den anderen oder durch Entwickelung neuer Bluthen- und Blattknospen in
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Facultative dichogamy and reproductive assurance in partially protandrous plants

Oikos, 2001
Following the pioneering work on pollination biology of the late 18th and 19th centuries, the phenomenon of dichogamy (the separation of presentation of pollen and stigmas in time) was, together with a plethora of other floral features, interpreted exclusively as an adaptive mechanism enhancing outcrossing.
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Plant sexual systems, dichogamy, and herkogamy in the Venezuelan Central Plain

Flora - Morphology, Distribution, Functional Ecology of Plants, 2005
Abstract Sexual system, temporal variation in sex expression, and herkogamy were evaluated in 210 plant species in the Venezuelan Central Plain (VCP). This analysis was conducted considering the life forms, habitats, flowering time, pollination systems, and dispersal syndromes of the plant species. Hermaphrodite species dominated the community (75.2%;
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