Results 121 to 130 of about 491 (160)

Disentangling the role of herkogamy, dichogamy and pollinators in plant reproductive assurance

open access: yesPlant Ecology and Diversity, 2018
Background: Autonomous selfing can be favoured by reduced floral herkogamy, dichogamy and pollinator visitation.
Lorena Ashworth
exaly   +3 more sources

INCIDENCE OF MONOECY AND DICHOGAMY IN RELATION TO SELF‐FERTILIZATION IN ANGIOSPERMS

American Journal of Botany, 1993
The evolution of many floral traits, including monoecy and dichogamy, has been attributed to selection for avoidance of self‐fertilization. If this explanation is correct, monoecy and dichogamy should be uncommon among self‐incompatible species because physiological barriers prevent self‐fertilization in such species.
exaly   +5 more sources

Synchronized dichogamy and dioecy in neotropicalLauraceae

Plant Systematics and Evolution, 1984
In hermaphrodite neotropicalLauraceae a highly evolved dichogamous system is present which represents a kind of temporal dioecy. This system involves the existence of two flower morphs which are characterized by reciprocal phases of receptivity of the stigmas and pollen release.
Klaus Kubitzki, Holger Kurz
openaire   +1 more source

Multiple sex expressions in Cimicifuga simplex: dichogamy destabilizes hermaphroditism

Biological Journal of the Linnean Society, 1987
Cimicifuga simplex (Ranunculaceae) has four types of individuals, differing in their sex expression: there are individuals with hermaphroditic, hermaphroditic and male (andromonoecious), only male, or only female flowers. Purely female individuals appear during the early part of the flowering period of the population, and males during the later part ...
Olle Pellmyr
exaly   +2 more sources

Movement-assisted dichogamy in Atamisquea emarginata (Capparaceae)

open access: yesPlant Systematics and Evolution, 2003
Various aspects of the reproductive biology of Atamisquea emarginata Miers ex Hook. et Arn. were studied in a population from Tucuman, northern Argentina. Flowering took place in late (austral) spring to early summer. The creamy white, entomophilous flowers were protandrous and lasted 3.5–4.5 days. A pleasant odor along with nectar and pollen attracted
Medan, Diego, Ponessa, Graciela Ines
exaly   +3 more sources

Variation in dichogamy and myophily in two dioecious Bridelia species (Phyllanthaceae)

Australian Journal of Botany, 2021
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 ...
M. A. Dias, R. M. C. S. Ratnayake
openaire   +1 more source

Dichogamie des Juncacées

Bulletin mensuel - Société botanique de Lyon, 1891
Kieffer . Dichogamie des Juncacées. In: Bulletin mensuel - Société botanique de Lyon, tome 9, bulletin 2, 1891. pp. 45-46.
openaire   +2 more sources

Long-term dichogamy of 80 pecan cultivars

Scientia Horticulturae, 1992
Abstract Data are presented on dates of pollen shed and pistil receptivity for up to 16 years for 80 pecan (Carya illinoensis (Wangenh.) C. Koch) cultivars and selections grown at Tifton, GA, USA. The data are useful for matching cultivars for optimum cross-pollination and minimum self-pollination. Pollination and pistil receptivity dates relative to
Ray E. Worley   +3 more
openaire   +1 more source

Dichogamy in Acer saccharum

Botanical Gazette, 1968
A study of dichogamy in Acer saccharum Marsh. (sugar maple) has shown that both protandry and protogyny occur in this species. The two conditions were represented equally in the population investigated. Synchronization of blooming periods of flowers of opposite sexes resulted in reciprocal pollination between trees with different dichogamous conditions.
openaire   +1 more source

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   +3 more
openaire   +2 more sources

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