Floral ontogeny and secretory structures of Discolobium pulchellum and Riedeliella graciliflora (Leguminosae: Papilionoideae: Dalbergieae): two closely related genera with diverging floral morphology

2021 ◽  
Vol 307 (6) ◽  
Author(s):  
João Pedro S. P. Bento ◽  
Fabio J. Kochanovski ◽  
Ângela L. B. Sartori
Keyword(s):  
Floral Morphology ◽  
Secretory Structures ◽  
Floral Ontogeny

scholarly journals Floral morphology and anatomy of Dalechampia alata Klotzsch ex Baill. (Euphorbiaceae), with emphasis on secretory structures

2016 ◽  
Vol 76 (1) ◽  
pp. 233-244 ◽  
Author(s):  
F. M. Martins ◽  
I. L. Cunha-Neto ◽  
T. M. Pereira
Keyword(s):  
Light Microscope ◽  
Chemical Nature ◽  
Floral Morphology ◽  
Staminate Flower ◽  
Ovary Wall ◽  
Transmitting Tissue ◽  
Secretory Structures ◽  
First Report ◽  
Meristematic Activity ◽  
Secretory Glands

Abstract The morphology and anatomy of the flower of Dalechampia alata, as well as the chemical nature of the exudates secreted in the inflorescence were studied using light microscope. This is the first report showing the presence of colleters in the genus Dalechampia. In the staminate flower occur a group of small secretory glands. The histochemical results indicate that the substance secreted from the glands is lipidic and resinuous in nature, while in the colleters it consists of polysaccharides and lipid-rich substances. The ovule of D. alata are anatropous, subglobose and bitegmic. It presents obturator, micropyle occluded by nucellar beak and meristematic activity in the ovary wall. The secretion produced in the stigmatic and transmitting tissue consists of polysaccharides.

scholarly journals Staminal wing and a novel secretory structure of asclepiads

Botany ◽  
2017 ◽  
Vol 95 (7) ◽  
pp. 763-772 ◽  
Author(s):  
Diego Demarco
Keyword(s):  
Flower Development ◽  
Striking Feature ◽  
Guide Rail ◽  
Secretory Structures ◽  
Floral Ontogeny ◽  
Floral Buds ◽  
Wide Range

Asclepiads (Asclepiadoideae, Apocynaceae) have morphologically complex flowers with a wide range of secretory structures related to their defense and pollination. A striking feature of the flowers is the presence of a guide rail formed by staminal wings, which is related to the guidance of the pollinator to the pollinarium translator and the retention of the pollinium. Previous analyses of floral ontogeny in asclepiads detected the presence of a possible gland on the staminal wing during flower development. The goal of the present study was to verify the occurrence of a secretory structure on the staminal wing and its possible function through ontogenetic and histochemical analyses of the presumed gland. Staminal wings are formed early in developing flowers, and a gland is originated in the outer and inner margins of the guide rail in all species. This gland releases a secretion composed of mucilage and lipids, which likely assists in the introduction of the pollinator appendage into the narrow guide rail by lubricating the staminal wings. The gland degenerates before anthesis, increasing the space within the guide rail and enabling the introduction of the pollinarium. This new secretory structure may be present in floral buds of all asclepiads.

Studies onBupleurum L. in India I. Secretory structures in the leaves

1986 ◽  
Vol 97 (7-8) ◽  
pp. 479-487
Author(s):  
Chaitali Chakrabarty ◽  
P. K. Mukherjee
Keyword(s):  
Secretory Structures

Floral morphology of certain species of the Papilionaceae with a special reference to stamen adelphy

Taeckholmia ◽  
2001 ◽  
Vol 21 (1) ◽  
pp. 153-172 ◽  
Author(s):  
Abd El-Salam Al- Nowaihi ◽  
Karima Hamed ◽  
Magdy Mourad
Keyword(s):  
Special Reference ◽  
Floral Morphology

Floral morphology and pollen viability of an endangered and endemic Bromeliaceae species from the Atlantic Forest

Grana ◽  
2021 ◽  
pp. 1-20
Author(s):  
Valéria Leobina dos Santos ◽  
Catarina Carvalho Nievola ◽  
Adriana de Oliveira Fidalgo ◽  
Shoey Kanashiro ◽  
Maria das Graças Lapa Wanderley ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Floral Morphology ◽  
Pollen Viability

Effects of light intensity on the anatomical structure, secretory structures, histochemistry and essential oil composition of Aeollanthus suaveolens Mart. ex Spreng. (Lamiaceae)

2021 ◽  
Vol 95 ◽  
pp. 104224
Author(s):  
Suzana Marques Barbosa ◽  
Natalia do Couto Abreu ◽  
Mozaniel Santana de Oliveira ◽  
Jorddy Nevez Cruz ◽  
Eloisa Helena de Aguiar Andrade ◽  
...  
Keyword(s):  
Light Intensity ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Anatomical Structure ◽  
Oil Composition ◽  
Secretory Structures

Floral Morphology ofApuleia leiocarpa(Dialiinae: Leguminosae), an Unusual Andromonoecious Legume

2013 ◽  
Vol 174 (2) ◽  
pp. 154-160 ◽  
Author(s):  
Erin Zimmerman ◽  
Gerhard Prenner ◽  
Anne Bruneau
Keyword(s):  
Floral Morphology

Quantitative Trait Loci Affecting Differences in Floral Morphology Between Two Species of Monkeyflower (Mimulus)

Genetics ◽  
1998 ◽  
Vol 149 (1) ◽  
pp. 367-382 ◽  
Author(s):  
H D Bradshaw ◽  
Kevin G Otto ◽  
Barbara E Frewen ◽  
John K McKay ◽  
Douglas W Schemske
Keyword(s):  
Quantitative Trait Loci ◽  
Reproductive Isolation ◽  
Quantitative Trait ◽  
Floral Morphology ◽  
Cumulative Effect ◽  
Sympatric Species ◽  
Accurate Estimate ◽  
Phenotypic Variance ◽  
Trait Loci ◽  
Morphological Differences

Abstract Conspicuous differences in floral morphology are partly responsible for reproductive isolation between two sympatric species of monkeyflower because of their effect on visitation of the flowers by different pollinators. Mimulus lewisii flowers are visited primarily by bumblebees, whereas M. cardinalis flowers are visited mostly by hummingbirds. The genetic control of 12 morphological differences between the flowers of M. lewisii and M. cardinalis was explored in a large linkage mapping population of F2 plants (n = 465) to provide an accurate estimate of the number and magnitude of effect of quantitative trait loci (QTLs) governing each character. Between one and six QTLs were identified for each trait. Most (9/12) traits appear to be controlled in part by at least one major QTL explaining ≥25% of the total phenotypic variance. This implies that either single genes of individually large effect or linked clusters of genes with a large cumulative effect can play a role in the evolution of reproductive isolation and speciation.

Heat stress affects floral morphology, silique set and seed quality in chamber and field grown winter canola

2021 ◽  
Author(s):  
Meghnath Pokharel ◽  
Michael Stamm ◽  
Nathan T. Hein ◽  
Krishna S. V. Jagadish
Keyword(s):  
Heat Stress ◽  
Seed Quality ◽  
Floral Morphology ◽  
Winter Canola
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