The explosive pollination mechanism in Papilionoideae (Leguminosae): an analysis with three Desmodium species

2013 ◽  
Vol 300 (1) ◽  
pp. 177-186 ◽  
Author(s):  
Mercedes Alemán ◽  
Trinidad Figueroa-Fleming ◽  
Ángela Etcheverry ◽  
Silvia Sühring ◽  
Pablo Ortega-Baes
Keyword(s):  
Pollination Mechanism ◽  
Explosive Pollination

scholarly journals Reproductive Ecology of Bruguiera cylindrica (L.) Bl. (Rhizophoraceae), A True Viviparous Mangrove Tree Species in Coringa Mangrove Forest, Andhra Pradesh (India)

2018 ◽  
Vol 20 (3) ◽  
pp. 31-38
Author(s):  
Jacob Solomon Raju Aluri ◽  
Henry Jonathan Karyamsetty
Keyword(s):  
Mangrove Forest ◽  
Andhra Pradesh ◽  
High Tide ◽  
Maternal Plant ◽  
Maternal Environment ◽  
Pollination Mechanism ◽  
Mangrove Tree ◽  
Material Environment ◽  
Explosive Pollination ◽  
Bruguiera Cylindrica

Abstract Bruguiera cylindrica (L.) Bl. bloom during September-March. It is hermaphroditic, protandrous, self-compatible and facultative xenogamous. The flowers possess an explosive pollination mechanism and are pollinated by bees and wasps. The pollination mechanism is characterized by special petal-stamen configuration in which each petal encloses two stamens and becomes tensed after anthesis. Each petal behaves independently and the explosion of all petals of a flower requires one or two visits. Individual flowers produce only one seed which produces seedlings on the maternal plant. The seedlings use self-planting strategy at low tide and stranding strategy at high tide. Both strategies are useful for regeneration in maternal environment and in areas away from material environment.

scholarly journals REPRODUCTIVE ECOLOGY OF BIRDVILLE INDIGO, INDIGOFERA LINNAEI ALI. (FABACEAE)

2017 ◽  
Vol 22 (1) ◽  
pp. 84-93
Author(s):  
G. Lakshminarayana ◽  
A. J. Solomon Raju
Keyword(s):  
Soil Cover ◽  
Reproductive Ecology ◽  
Heavy Rain ◽  
Long Distance Dispersal ◽  
Flower Buds ◽  
Long Distance ◽  
Important Species ◽  
Pollination Mechanism ◽  
Explosive Pollination ◽  
High Winds

Indigofera linnaei, a low ground herb is an important species of herbaceous cover. It forms extensive mats of populations carpeting the soil. But, it is not known how it is able to increase its population size and spread into other areas. The knowledge of its reproductive ecology is important to understand its reproductive capabilities and evaluate its use in eco-restoration initiatives. The study aims to provide information on its reproductive ecology. I. linnaei flowers are papilionaceous, bisexual, monostylous, weakly protandrous, self-compatible, facultatively xenogamous and possess explosive pollination mechanism. High winds, high temperature and heavy rain trip the pollination mechanism and effect only selfing while bees and lycaenid butterflies trip pollination mechanism and affect both selfing and outcrossing. Thrips use the flower buds for breeding, emerge during anthesis and pollinate the flowers by feeding on pollen and nectar. The fruit is a pod which dehisces explosively to disperse seeds; long distance dispersal is facilitated by their irregular shape, oily nature, and carried away by wind and rain water. Therefore, ballistichory, anemochory and hydrochory are the functional modes of seed dispersal that enable the plant to invade and colonize especially open, sandy dry areas. The plant provides food for certain local insects and protects the soil cover with its clustered root system and spreading form of multi-stemmed branching pattern. Therefore, I. linnaei has the potential for use in the restoration of destroyed, degraded and damaged habitats.Journal of Institute of Science and TechnologyVolume 22, Issue 1, July 2017, Page: 84-93 

scholarly journals Author Correction: De novo assembly of the Platycladus orientalis (L.) Franco transcriptome provides insight into the development and pollination mechanism of female cone based on RNA-Seq data

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Wei Zhou ◽  
Qi Chen ◽  
Xiao-Bing Wang ◽  
Tyler O. Hughes ◽  
Jian-Jun Liu ◽  
...  
Keyword(s):  
De Novo Assembly ◽  
De Novo ◽  
Rna Seq ◽  
Female Cone ◽  
Pollination Mechanism ◽  
Platycladus Orientalis ◽  
Insight Into

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

The pollination mechanism and development after bud burst of cones of Larix laricina

1991 ◽  
Vol 69 (6) ◽  
pp. 1179-1187 ◽  
Author(s):  
G. R. Powell ◽  
Kathleen J. Tosh
Keyword(s):  
Key Words ◽  
Seed Size ◽  
Larix Laricina ◽  
Bud Burst ◽  
Scale Growth ◽  
Pollination Mechanism ◽  
Seed Cone ◽  
Cone Development ◽  
Micropylar Canal ◽  
Pollen Cone

Pollen-cone and seed-cone development, from bud burst to maturity, was investigated on Larix laricina (Du Roi) K. Koch in three young plantations. The pollination mechanism was emphasized. Pollen cones grew rapidly to shed pollen, shrivelled, and remained on the trees for a year or more. Pollen was directed to the ovular regions by the bracts of the seed cones. Pollen adhered among papillae on the larger of two integument extensions. Degeneration of the centre of the papillate integument tip caused a collapse that drew pollen in as the papillate rim grew inward. This ingrowth was joined by that of the smaller integument extension, resulting in a sealed tubular structure that enclosed a dry micropylar canal. Pollen was held by the ingrown plug of degenerated tissue as the nucellus tip expanded into the base of the canal. As this occurred, the ovules, with or without pollination, grew to ultimate seed size, and the initially small ovuliferous scales overgrew the bracts. First bract, then ovuliferous-scale growth was associated with a double-sigmoid form of cone elongation. In mature cones the bracts decreased and the ovuliferous scales (except near the tip) increased in size acropetally. Key words: bract, integument, ovuliferous scale, pollen cone, seed cone, tamarack or eastern larch.

Further observations on the pollination mechanism and seed production of Douglas-fir

1982 ◽  
Vol 12 (2) ◽  
pp. 431-434 ◽  
Author(s):  
John N. Owens ◽  
Sheila J. Simpson
Keyword(s):  
Seed Production ◽  
Pollen Grains ◽  
Germination Percentage ◽  
Douglas Fir ◽  
Pollination Mechanism ◽  
Supplemental Pollination

The pollination mechanism of Douglas-fir (Pseudotsugamenziesii (Mirb.) Franco) was studied. Pollen stained five different colors and applied to the same conelets at five different times showed that the pollen applied on the 1st and 3rd days after conelets became receptive was taken into the micropyle in significantly greater quantities than pollen applied at later dates. A second supplemental pollination did not increase the seed efficiency for individual cones. Seeds produced when an average of less than 1.2 pollen grains were taken into the micropyle had essentially the same germination percentage and proportion of abnormal germinants as seeds resulting when an average of 3.4 or more pollen grains were taken into the micropyle.

Sign in / Sign up

Export Citation Format

Share Document