Results 61 to 70 of about 1,510 (202)
The neglected floral polymorphism: mirror-image flowers emerge from the shadow of heterostyly
Morphological asymmetries in plants and animals raise intriguing questions concerning their function and how they have evolved. One of the most conspicuous asymmetries in plants involve mirror-image flowers (enantiostyly) in which styles are deflected ...
S. Barrett, Alice L. M. Fairnie
semanticscholar +1 more source
Abstract Volunteers have been involved in nature observations for decades through citizen science initiatives, providing large data sets as well as problem identification that allow a more complete understanding of many natural phenomena. Although communication is a core component in citizen science, the key factors that determine its effectiveness in ...
Kristiina Gibson +18 more
wiley +1 more source
Factors determining the diurnal dynamics of blooming of chosen plant species
The paper attempts to synthesize the determinants which may influence the diurnal rhythm of blooming. Additionally, I tried to explore and bring together topics that concern blooming and have always been considered separately because of their origin in ...
Bożena Denisow
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Heteranthery in Commelina communis integrates a temporally structured two‐step selfing system: prior selfing via bud pollination followed by delayed selfing mediated by the medium‐length stamen (M‐anther). By functioning both as a pollinator reward and a mediator of delayed selfing, the M‐anther links outcrossing with reproductive assurance within a ...
Kaho Ikeda, Yoshiaki Kameyama
wiley +1 more source
Studies on the pollination biology and breeding systems of some genera with sympatric species in the Brazilian cerrados [PDF]
Flowering phenology, floral strategies pollinator activity and breeding system were investigated in 14 species of the cerrado vegetation in Braeflia (DF), from April 1985 to April 1986 in Tabebuia caraiba (Mart.) Bur., T.
Barros, Mariluza Araujo Granja e.
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In this study we compare the reproductive biology of Cordia globosa and C. leucocephala (Cordiaceae, Boraginales; formerly referred to Boraginaceae) to understand the functioning of the floral morphs and the relations with their effective pollinators ...
Isabel C. Machado +2 more
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The Origin and Evolutionary Development of Heterostyly in the Angiosperms [PDF]
Recent studies have indicated more and more that plant reproductive systems, like morphological characters, vary within and between species. Heslop-Harrison (1957) summarized studies of some physiological factors which affect the expression of sexuality in plants.
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A phylogenomic analysis and revised infrageneric classification of Thesium (Santalaceae)
Abstract A phylogenomic analysis and revised infrageneric classification of Thesium (Santalaceae) is presented based on targeted enrichment using the Angiosperms353 probe set. This first targeted sequencing study includes 137 samples representing 106 species (approximately 32% of the genus).
Natasha Lombard +6 more
wiley +1 more source
Heterostyly is a floral polymorphism consisting in the presence of two morphs in the population that differ reciprocally in the position of their sexual organs.
Rogério Rodrigues Faria +1 more
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SOME ASPECTS OF HETEROSTYLY [PDF]
SUMMARYIt is suggested that the functional significance of each di/trimorphic structure in heterostyled flowers should be considered separately. The origin of the morphological and physiological components of heterostyly is discussed; it is suggested that the physiological incompatibility arose first and created conditions favouring selection of ...
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