Physiologische und Ökologische Untersuchungen an Blüten TropischerNymphaea-arten

Schmucker, Th.

doi:10.1007/bf01911473

Cited by 40 publications

(13 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A possible mechanism that could explain such drastic shifts is neoteny. Schmucker (1932) observed comparable phenomena, i.e. dwarfing and reduction of floral organ number, in Nymphaea micrantha clones grown from leaf offshoots.…”

Section: Discussionmentioning

confidence: 87%

Phylogenetic analysis of Nymphaeales using fast-evolving and noncoding chloroplast markers

Löhne¹,

Borsch²,

Wiersema³

2007

Botanical Journal of the Linnean Society

View full text Add to dashboard Cite

The Nymphaeales (water-lilies and relatives) represent one of the earliest branching lineages of angiosperms and comprise about 70 aquatic species. Here, we present a comprehensive study of phylogenetic relationships within the Nymphaeales from a dataset containing 24 representatives of the order, including all currently recognized genera and all subgenera of the genus Nymphaea , plus 5 outgroup taxa. Nine different regions of the chloroplast genome − comprising spacers, group II introns, a group I intron, and a protein coding gene − were analysed. This resulted in a character matrix of 6597 positions and an additional 369 characters obtained from coded length mutations. Maximum parsimony and Bayesian analyses of the complete dataset yielded congruent, fully resolved and wellsupported trees. Our data confirm the monophyly of the Cabombaceae but do not provide convincing support for the monophyly of Nymphaeaceae with respect to Nuphar . Moreover, the genus Nymphaea is inferred to be paraphyletic with respect to Ondinea , Victoria and Euryale . In fact, the Australian endemic Ondinea forms a highly supported clade with members of the Australian Nymphaea subgenus Anecphya . In addition, Victoria and Euryale are inferred to be closely related to a clade comprising all night-blooming water-lilies ( Nymphaea subgenera Hydrocallis and Lotos ). An experimental approach showed taxon sampling to be of influence on the nodes reconstructed in core Nymphaeaceae. The results underscore that more diverse genera, if not clearly known to be monophyletic, should be represented by all major lineages.

show abstract

Section: Discussionmentioning

confidence: 87%

Phylogenetic analysis of Nymphaeales using fast-evolving and noncoding chloroplast markers

Löhne¹,

Borsch²,

Wiersema³

2007

Botanical Journal of the Linnean Society

View full text Add to dashboard Cite

show abstract

“…Some of these floral features are adaptations for pollination. In particular, the highly specialized carpellary appendages are associated with beetle pollination and the stigmatic secretions function in washing pollen off the bodies of pollinators (Schmucker, 1932;Meeuse & Schneider, 1980;Wiersema, 1988). Such functional significance can also be attached to petal coloration, floral scents and thermogenesis, and temporal responses.…”

Section: Discussionmentioning

confidence: 99%

Cytogenetics of aquatic ornamentals. VI. Evolutionary trends and relationships in the genus Nymphaea.

Gupta

1980

CYTOLOGIA

View full text Add to dashboard Cite

“…Because of the strongly ascidiate shape, the inner spaces of the individual carpels are completely separated from each other, so that there is no centralized pollen tube transmitting tract (intragynoecial compitum) serving all carpels together, as is so common in eudicots and monocots. Instead, a watery stigmatic secretion that collects in the centre of the flower in Nymphaea species (Schmucker, 1932) may act as an extragynoecial compitum (Fig. 8H).…”

Section: Version Of Recordmentioning

confidence: 99%

Ancestral traits and specializations in the flowers of the basal grade of living angiosperms

Endress

Doyle

2015

TAXON

View full text Add to dashboard Cite

New morphological and phylogenetic data prompt us to present an updated review of floral morphology and its evolution in the basal ANITA grade of living angiosperms, Chloranthaceae, and Ceratophyllum. Floral phyllotaxis is complex whorled in Nymphaeales and spiral in Amborella and Austrobaileyales. It is unresolved whether phyllotaxis was ancestrally whorled or spiral, but if it was whorled, the whorls were trimerous. The flowers are probably ancestrally bisexual because in most families with unisexual flowers these flowers exhibit rudiments of the opposite sex. Carpels are largely ascidiate and the closure line is short, either transverse or longitudinal. A style is usually absent or, if present, generally short and not plicate. Angiospermy (carpel sealing) is by secretion, rather than postgenital fusion, except in large‐flowered Nymphaeales and in Illicium, correlated with unusual fruits. Carpels with a single, median, pendent ovule are probably plesiomorphic. Chloranth‐ aceae and Ceratophyllaceae have an unsettled phylogenetic position, but in some phylogenetic analyses they form a clade, which may be sister to the remaining mesangiosperms (Magnoliidae, monocots, eudicots). This position is supported by their carpel characters, which are similar to those of the ANITA grade and different from those of most other mesangiosperms.

show abstract

Physiologische und Ökologische Untersuchungen an Blüten TropischerNymphaea-arten

Cited by 40 publications

References 1 publication

Phylogenetic analysis of Nymphaeales using fast-evolving and noncoding chloroplast markers

Phylogenetic analysis of Nymphaeales using fast-evolving and noncoding chloroplast markers

Cytogenetics of aquatic ornamentals. VI. Evolutionary trends and relationships in the genus Nymphaea.

Ancestral traits and specializations in the flowers of the basal grade of living angiosperms

Contact Info

Product

Resources

About