Results 21 to 30 of about 696 (160)
Disruptive selection via pollinators and seed predators on the height of flowers on a wind-dispersed alpine herb. [PDF]
Am J Bot, 2022 Abstract Premise Floral stalk height is known to affect seed dispersal of wind‐dispersed grassland species, but it may also affect the attractiveness of flowers and fruits of animal‐pollinated and animal‐dispersed plants. Stalk height may thus be responsive to selection via interactions with both mutualist pollinators and seed dispersers, but also ...
Chen KH, Pannell JR.
europepmc +2 more sources
Reversibility of sex changes in the plant kingdom: more important than we thought? [PDF]
Biol Rev Camb Philos SocABSTRACT Compared to animals, plants show a wide range of reproductive strategies with different degrees of sex separation (e.g. dioecy, monoecy, hermaphroditism). While sex expression was previously thought to be genetically determined and fixed in plants, accumulating evidence suggests that sex expression can change reversibly even within one ...
Sammarco I +3 more
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Climate adaptation and functional constraints drive pollen evolution in Apiales. [PDF]
New PhytolSummary Pollen grains exhibit remarkable morphological diversity, shaped by selective pressures from environmental factors and mechanical constraints. Here, we investigate macroevolutionary patterns of pollen morphology in Apiales, an order of angiosperms with significant ecological and geographical diversity, to disentangle the roles of climate and ...
Baczyński J +3 more
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Andromonoecy and Floral Protandry of Oenanthe aquatica (Apiaceae)
Vestnik Tomskogo gosudarstvennogo universiteta. Biologiya, 2022 The paper studies the synflorescence structure and flowering biology of the biennial monocarpic wetland plant Oenanthe aquatica. This species has a set of adaptations to prevent self-pollination, including generation of a pseudanthium, andromonoecy, intra- and interfloral protandry, and a specific sequence of flowering within its umbels.
Godin, Vladimir N. +3 more
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Functional Andromonoecy in Euphorbia (Euphorbiaceae) [PDF]
Annals of Botany, 2002 The occurrence of cyathia containing staminate flowers but lacking a pistillate flower was studied in 17 species of Euphorbia. Male cyathia were found in the majority of species studied (88.2%) giving functional andromonoecy. In the male cyathia, the pistillate flower is generally totally absent, but sometimes a vestigial pistillate flower with a non ...
E, Narbona, P L, Ortiz, M, Arista
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Size-dependent sex allocation in Solanum lycocarpum St. Hil. (Solanaceae)
Brazilian Journal of Biology, 2021 Resource allocation to reproduction can change depending on size, as predicted by the size-dependent sex allocation. This theory is based on the fact that small individuals will invest in the allocation of sex with lower cost of production, usually male ...
F. F. Coelho +4 more
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Functional Dioecy and Andromonoecy in Solanum [PDF]
Evolution, 1989 Field and laboratory studies of 19 diclinous species endemic to Australia help to clarify the nature and evolution of andromonoecy, androdioecy, and dioecy in the genus Solanum. Ten species are andromonoecious; typically these species bear inflorescences with a single, large basal hermaphroditic flower and 12-60 distal, smaller staminate flowers.
Gregory J, Anderson, David E, Symon
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Andromonoecy and developmental plasticity in Chaerophyllum bulbosum (Apiaceae-Apioideae). [PDF]
Ann Bot, 2013 Andromonoecy, the presence of hermaphrodite and male flowers in the same individual, is genetically fixed or induced, e.g. by fruit set. Little is known about the forces triggering andromonoecy in the Apiaceae. In the present study, a natural population of the protandrous Chaerophyllum bulbosum was investigated to elucidate architectural constraints ...
Reuther K, Claßen-Bockhoff R.
europepmc +4 more sources
Reproductive biology of the andromonoecious shrubTrevoa quinquenervia(Rhamnaceae) [PDF]
Botanical Journal of the Linnean Society, 1998 Abstract Various aspects of the reproductive biology of the andromonoecious shrub Trevoa quinquenervia Gill. & Hook. were studied in a population located in central Chile. Flowering extends from mid August to the end of December. The small, white, entomophilous flowers are incompletely protandrous and last c . 5 days.
DIEGO MEDAN, ANA C. D'AMBROGIO
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Sexual systems in the New Zealand angiosperm flora
New Zealand Journal of Botany, Volume 61, Issue 4, Page 201-231, December 2023., 2023 ABSTRACT We present data on sexual systems and associated traits in the New Zealand angiosperm flora and discuss reasons for the anomalously high levels of gender dimorphism in the flora, and the low levels of monoecy in woody species. Along with Hawai'i and New Caledonia, New Zealand has exceptionally high levels of gender dimorphism (19.5% of ...
Matt S. McGlone, Sarah J. Richardson
wiley +1 more source