scholarly journals How Have Advances in Comparative Floral Development Influenced Our Understanding of Floral Evolution?

2015 ◽  
Vol 176 (4) ◽  
pp. 307-323 ◽  
Author(s):  
Beverley J. Glover ◽  
Chiara A. Airoldi ◽  
Samuel F. Brockington ◽  
Mario Fernández-Mazuecos ◽  
Cecilia Martínez-Pérez ◽  
...  
Keyword(s):  
Floral Development ◽  
Floral Evolution

Floral development and anatomy of Macarthuria australis (Macarthuriaceae): key to understanding the unusual initiation sequence of Caryophyllales

2019 ◽  
Author(s):  
Louis P. Ronse De Craene ◽  
Lai Wei
Keyword(s):  
Floral Development ◽  
Floral Anatomy ◽  
Floral Evolution ◽  
Flower Initiation ◽  
Developmental Sequence ◽  
Petal Development ◽  
Initiation Sequence ◽  
Rapid Emergence

We investigated the floral anatomy and development of Macarthuria australis Hügel ex Endl., an unusual genus endemic to Australia, in the context of floral evolution of core Caryophyllales. Flower initiation is spiral, with sepals developing quincuncially. The first two petals continue the sequence of sepal initiation, but the remaining petals arise from common stamen–petal primordia. The androecium develops sequentially as three inner antesepalous and five outer antepetalous stamens. The globular ovary is trimerous with a short symplicate zone and two arillate ovules per locule. The rapid emergence of the androecium leads to a partial absorption of the petal primordia within the androecial tissue. The two first-formed petals have more room for development and precede the androecium, supporting the fact that petals are not staminodial in origin. This heterochronic shift correlates with an inversed developmental sequence of the antesepalous stamens. The constraint caused by the spatial occupation of sepals and carpels leads to the loss of two stamens, and the re-arrangement of stamens and petals along the flanks of the carpels. The floral development of Macarthuria anticipates a syndrome of stamen and petal development in other core Caryophyllales and culminating in the Caryophyllaceae.

scholarly journals Floral development of dioecious species and trends of floral evolution in Piper sensu lato

1998 ◽  
Vol 127 (3) ◽  
pp. 225-237
Author(s):  
LI-GONG LEI ◽  
HAN-XING LIANG
Keyword(s):  
Floral Development ◽  
Floral Evolution ◽  
Dioecious Species

Floral Evolution in the Detarieae (Leguminosae): Phylogenetic Evidence for Labile Floral Development in an Early-Diverging Legume Lineage

2014 ◽  
Vol 175 (4) ◽  
pp. 392-417 ◽  
Author(s):  
Anne Bruneau ◽  
Bente B. Klitgaard ◽  
Gerhard Prenner ◽  
Marie Fougère-Danezan ◽  
Shirley C. Tucker
Keyword(s):  
Floral Development ◽  
Floral Evolution

Effect of the Stages of Floral Development and Postharvest Temperatures to Flowering of Eremurus in Israel

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 536d-536
Author(s):  
Rina Kamenetsky
Keyword(s):  
Morphological Analysis ◽  
Developmental Disorder ◽  
Floral Development ◽  
The Third ◽  
Initial Stage ◽  
Floral Differentiation ◽  
Soil Temperatures ◽  
Very High ◽  
Development Application ◽  
Flowering Process

The influence of postharvest temperature on the flowering response of Eremurus was studied. The plants were harvested at four different stages of development and were separated into three groups. The first group was immediately exposed to 2 °C, the second group to 20 °C followed by 2 °C, and the third group to 20 °C followed by 32 °C and, subsequently, 2 °C. Scanning electron microscopy (SEM) was used for concurrent morphological analysis of floral development. Application of 2 °C to the plants in the initial stage of floral development caused plant destruction and death, while the same treatment applied at the stage of full differentiation promoted normal flowering. Temperatures of 20 °C and, especially, 32 °C, significantly improved flowering of the plants harvested in the early stages of florogenesis, whereas the same treatment applied to the plants harvested at the end of flower differentiation did not affect the flowering process. A developmental disorder, which we term “Interrupted Floral Development” (IFD), was observed only in the plants harvested when the racemes were fully differentiated. This was probably caused by the very high air and soil temperatures that prevail in Israel during the summer. The extent of floral differentiation has a determinant role in subsequent scape elongation and flowering.

Photoassimilate Distribution in Spartina alterniflora Loisel. I. Vegetative and Floral Development 1

1980 ◽  
Vol 72 (6) ◽  
pp. 933-938 ◽  
Author(s):  
R. W. Lytle ◽  
R. J. Hull
Keyword(s):  
Spartina Alterniflora ◽  
Floral Development

Pollinator Behavior and Deceptive Pollination: Learning Process and Floral Evolution

1998 ◽  
Vol 152 (5) ◽  
pp. 696
Author(s):  
Ferdy ◽  
Gouyon ◽  
Moret ◽  
Godelle
Keyword(s):  
Learning Process ◽  
Floral Evolution ◽  
Deceptive Pollination ◽  
Pollinator Behavior
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