Judge it by its shape: a pollinator‐blind approach reveals convergence in petal shape and infers pollination modes in the genus Erythrina

2021 ◽  
Vol 108 (9) ◽  
pp. 1716-1730
Author(s):  
Gonzalo Bilbao ◽  
Anne Bruneau ◽  
Simon Joly
Keyword(s):  
Petal Shape

Control algorithm for the petal-shape segmented-mirror telescope with 18 mirrors

2012 ◽  
Author(s):  
Atsushi Shimono ◽  
Fumihide Iwamuro ◽  
Mikio Kurita ◽  
Yuki Moritani ◽  
Masaru Kino ◽  
...  
Keyword(s):  
Control Algorithm ◽  
Petal Shape ◽  
Segmented Mirror ◽  
Mirror Telescope

Perfect sound absorption of Helmholtz resonators with embedded channels in petal shape

2021 ◽  
Vol 130 (13) ◽  
pp. 135102
Author(s):  
Mingyu Duan ◽  
Chenlei Yu ◽  
Wei He ◽  
Fengxian Xin ◽  
Tian Jian Lu
Keyword(s):  
Sound Absorption ◽  
Helmholtz Resonators ◽  
Petal Shape

Comparative Morphology of the Genus Tamarix (Tamaricaceae) in Iran

2016 ◽  
Vol 60 ◽  
pp. 1-12 ◽  
Author(s):  
Reza Arianmanesh ◽  
Iraj Mehregan ◽  
Mostafa Assadi ◽  
Taher Nejadsattari
Keyword(s):  
Relative Position ◽  
Leaf Morphology ◽  
Diagnostic Marker ◽  
Comparative Morphology ◽  
Morphological Characters ◽  
Floral Organs ◽  
Petal Shape ◽  
Sem Studies

TamarixL. with almost 54 species is the largest genus of the Tamaricaceae. This study was carried out on species ofTamarixthat growing in Iran. Morphological characters were obtained for 23 species recognized by recent taxonomic treatments from Iran. In this study we use 10 characters to identify species ofTamarixthat growing in Iran. For SEM studies, we used dry sampels of leaves and flowers. Some characters are useful for segregating certain species, such as gross leaf morphology (vaginate vs. sessile), number of floral parts, certain aspects of androecial disk morphology, petal shape, presence or absence of hairs on the raceme rachis, and whether the filament is inserted under or from the side of the androecial disk. In some species the number of sepals, petals and stamens are constant and reliable. One of the problems inTamarixis that in many species the number of certain floral organs is inconstant thus the number of floral parts alone can not serve as a diagnostic marker without being correlated with the relative position of the organs and their range of numerical variability.

Design and Modeling of a Petal-Shape, Conjugated Polymer-Actuated Micropump

2008 ◽  
Author(s):  
Yang Fang ◽  
Xiaobo Tan
Keyword(s):  
Transfer Function ◽  
Conjugated Polymer ◽  
Actuation Voltage ◽  
Shape Design ◽  
Cantilever Beams ◽  
Potential Applications ◽  
Petal Shape ◽  
Conjugated Polymer Actuators ◽  
Function Models ◽  
Transfer Function Models

Conjugated polymers are emerging actuation materials for biomimetic robots and biomedical devices. Most previous research has been focused on the configurations of cantilever beams and linear extenders. However, the diaphragm configuration is needed in many potential applications, such as micro pumps for drug delivery and chemical/ biological analysis. In this paper the design of a conjugated polymer pumping diaphragm is investigated theoretically and experimentally. A petal-shape design is proposed to alleviate the edge constrains. Transfer function models from the actuation voltage to the diaphragm curvature and to the flow rate are obtained. Experiments are conducted to verify the effectiveness of the models. The transfer function models facilitate design optimization and the use of feedback control tools in dealing with the complicated behavior of conjugated polymer actuators.

Aquilegia yangii (Ranunculaceae), a new species from western China

Phytotaxa ◽  
2018 ◽  
Vol 348 (4) ◽  
pp. 289 ◽  
Author(s):  
LU LI ◽  
YAN LUO ◽  
CHEN-XUAN YANG ◽  
JIAN-PING DENG ◽  
ANDREY S. ERST
Keyword(s):  
New Species ◽  
Surface Morphology ◽  
The Other ◽  
Flower Size ◽  
Western China ◽  
Reproductive Structure ◽  
Seed Surface ◽  
Petal Shape ◽  
A New Species

Aquilegia yangii (Ranunculaceae), a new species from western China, is described and illustrated. The new species is similar to A. oxysepala and A. kansuensis. However, there are differences in reproductive structure, especially flower size, petal shape, anther colour and seed surface, between the new species and the other two species. The seed surface morphology of the new species is also described in this study.

scholarly journals TRANSMISSION PATTERNS OF SELECTED MORPHOLOGICAL TRAITS IN INTERSPECIFIC EXACUM HYBRIDS

HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 680b-680
Author(s):  
Andrew Riseman ◽  
Richard Craig
Keyword(s):  
Interspecific Hybridization ◽  
Interspecific Hybrid ◽  
Morphological Traits ◽  
Parental Species ◽  
Horticultural Traits ◽  
Petal Shape ◽  
Flower Form ◽  
Stem Shape

The morphology of interspecific Exacum hybrids was investigated in order to determine transmission patterns of several horticultural traits and to confirm interspecific hybrid status of plants. The evaluations utilized 557 accessions from interspecific hybridization of the following species: Exacum. macranthum, E. pallidum, E. pedunculatum, E. trinervium ssp. ritigalensis, and E. trinervium ssp. trinervium. Transmission patterns are proposed for stem shape (three phenotypes- clylindrical, winged-cylindrical and qudrangular; no dominance), petal shape (two phenotypes-rounded and acuminate; rounded dominant to acuminate) and flower form (two phenotypes- imbricate and separate; imbricate dominant to separate) Examination of the progenies confirm interspecific hybridization by the appearance of combinations of traits from the parental species and/or the observation of unique forms not previously observed.

Sign in / Sign up

Export Citation Format

Share Document