First blooming of my Dyckia choristaminea

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chanin
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First blooming of my Dyckia choristaminea

Beitrag von chanin »

I just got this clump of Dyckia choristaminea from my friend in US.
After its arrival for a week, the plant has bloomed with a striking yellow blossoms.

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You may notice the tiny black ants, which were attracted by a kind of nectar,
excreting from floral parts, for pollination purpose.

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I would like to meet new friends in other part of the world and would be glad to trade plants or seed from this part of the world.
Timm Stolten
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Beitrag von Timm Stolten »

Hi Chanin,

if it is still blooming, go and try that nectar (or whatever it is).
It is as sweet and tasty as honey !

Greetings Timm
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Constantino Gastaldi
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Great blooming

Beitrag von Constantino Gastaldi »

Great blooming really! When a plant blooms is for sure a sign of good health. In Dyckias the yellow flowers are rare, more often they are orange and still rarer wine like. Whaite floers are still to be discovered but we think they may exist somewhere in nature.
The ants are not good polinizers cause they literally eat parts of the flower. Flying insects are far more efective in this action. Here hummingbirds and bees are the most common agents of polinization.
Chanin, you do have an astonishing collection. You are double blessed by your good will and the climate in your place. Your plants have a great look.
Nice to see from u.
Constantino
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chanin
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Beitrag von chanin »

:lol: Oh...Man ! I can't imagine Timm, licking on Dyckia's flower stalk,
but may be I will try myself !

Hi Constantino, yes I found that they are usually orange-colored in most of my collections.
For this yellow flower species, I could scent a nice fragrance be floating in the air too.
I would like to meet new friends in other part of the world and would be glad to trade plants or seed from this part of the world.
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chanin
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Beitrag von chanin »

About Dyckia pollination, I searched on internet and found an interesting topic :

Can. J. Bot. 81(1): 24–27 (2003) | doi:10.1139/b03-003 | © 2003 NRC Canada

The beneficial effect of ants on the reproductive success of Dyckia floribunda (Bromeliaceae), an extrafloral nectary plant


José L. Vesprini, Leonardo Galetto, and Gabriel Bernardello


Abstract: Dyckia floribunda is a perennial herb from the Argentinian Chaco with extrafloral nectaries.
Ants visited these nectaries while patrolling inflorescences and infructescences.
We anticipated that ants attracted to extrafloral nectaries might protect the reproductive organs,
increasing plant reproductive output.

To evaluate the possibility of mutualism between D. floribunda and ant visitors,
we determined whether ant-accessible plants showed a higher seed production
than ant-excluded plants.

Experimental fieldwork suggested a decrease in fruit set of ant-excluded plants
compared with ant-accessible plants but the seed number per fruit was not affected by ant exclusion.
Thus, total seed number per plant was highly reduced in treated spikes.
Analyses of covariance confirmed these trends, indicating that total seed production per plant
was strongly affected by ant exclusion.

This study marks the first experimental report of this mutualistic association in Bromeliaceae.

Key words: ant–plant interaction, Bromeliaceae, Chaco, Dyckia floribunda, fruit set, seed set, mutualism.
I would like to meet new friends in other part of the world and would be glad to trade plants or seed from this part of the world.
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chanin
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Beitrag von chanin »

Hi again, this is also an interesting data :


Simone Bazarian Vosgueritchian; Silvana Buzato1

Universidade de São Paulo, Instituto de Biociências, Departamento de Ecologia, Rua do Matão, travessa 14, 321, 05508-900 São Paulo, SP, Brasil


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Sexual reproduction of Dyckia tuberosa (Vell.) Beer (Bromeliaceae, Pitcairnioideae) and plant-animal interaction

ABSTRACT

Bromeliaceae is an important component in several Biomas due to its remarkable ecological diversity as well as biotic interactions. It presents a combination of two reproductive mechanisms: sexual and clonal propagation. We describe in this study the various attributes related to the sexual reproduction of Dyckia tuberosa as well as plant-animal interactions that take place in its reproductive structures. In the population studied, 55% of individuals blossomed and set fruit over an 11-month period. The flowers developed from the basis to the top and had morphometrical differences with regard to its position in inflorescence that cause also differences in number of seeds set. Sugar concentration in the nectar was 20% and total production of nectar was about 24 µL flower-1 day-1. Nectar production was bigger in the morning period. Dyckia tuberosa is self-incompatible, an unusual feature for Bromeliaceae, and the index of self-incompatibility (ISI) was 0.08. Only hummingbirds were responsible for the legitimate visits of flowers, contacting anthers and stigma, and 3.9 flowers were visited per hour. Chlorostilbon aureoventris, Colibri serrirostris and Phaethornis eurynome were the hummingbird species registered. Sexual reproduction on D. tuberosa depends on hummingbirds'visitation. Inflorescences of D. tuberosa were also visited by the ant species Camponotus rufipes, Camponotus cf. mus and Cephalotes sp. As sexual reproduction is absent in many individuals and this species is dominant on the granite outcrop of Pedra Grande, we consider clonal propagation an important strategy for the spread of this species in this area. Given the presence of food resources for pollinating and non-pollinating animals on reproductive structures of D. tuberosa, this system seems suitable to assess how variation on resources availablity change the results of these interactions as well as the reproductive output of D. tuberosa.

Key words: floral biology, hummingbird pollination, plant-ant interaction, reproductive phenology, self-incompatibility




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Reprodução sexuada de Dyckia tuberosa (Vell.) Beer (Bromeliaceae, Pitcairnioideae) e interação planta-animal


RESUMO

Bromeliaceae é um componente importante em vários Biomas, sendo notável a variedade de contextos ecológicos em que pode ser encontrada. Ocorre no grupo a combinação entre dois modos de reprodução: sexuada e propagação clonal. Neste estudo descrevemos vários atributos relacionados à reprodução sexuada de Dyckia tuberosa, bem como interações planta-animal que se estabelecem em suas estruturas reprodutivas. Ao longo de 11 meses, 55 % dos indivíduos na população estudada floresceram e frutificaram. As flores se desenvolvem da base para o ápice e apresentam diferenças morfométricas quanto à posição na inflorescência que acarretam diferenças na produção de sementes. A concentração de açúcares no néctar foi de 20% e a produção total de néctar foi de c. de 24 µL flor-1 dia-1, sendo esta última maior no período da manhã entre 8h00 e 9h00. Dyckia tuberosa é auto-incompatível e o índice de auto-incompatibilidade (ISI) foi de 0,08. Somente beija-flores exploraram as flores de modo legítimo, contatando anteras e estigma, sendo 3,9 flores visitadas por hora. Chlorostilbon aureoventris, Colibri serrirostris e Phaethornis eurynome foram as espécies registradas. Em D. tuberosa a reprodução sexuada depende das visitas dos beijaflores. Houve patrulhamento das inflorescências de D. tuberosa pelas formigas Camponotus rufipes, Camponotus cf. mus e Cephalotes sp. Como há ausência de reprodução sexuada em muitos indivíduos, e esta espécie é dominante no afloramento rochoso estudado, consideramos que a propagação clonal seja uma estratégia importante para a disseminação de D. tuberosa na área. A presença de animais, polinizadores ou não, na inflorescência de D. tuberosa torna esta espécie adequada para avaliar como variações na disponibilidade de recursos florais alteram o resultado das interações planta-animal e o sucesso reprodutivo de D. tuberosa.

Palavras-chave: auto-incompatibilidade, biologia floral, fenologia reprodutiva, interação formiga-planta, polinização por beija-flores
I would like to meet new friends in other part of the world and would be glad to trade plants or seed from this part of the world.
Timm Stolten
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Beitrag von Timm Stolten »

chanin hat geschrieben::lol: Oh...Man ! I can't imagine Timm, licking on Dyckia's flower stalk,
I did not mean licking with your tongue directly,
take your fingertips ;-)
Sometimes the nectar crystallizes and you end up with pure sugar.
Not enough for a cup of coffee but enough to enjoy.
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Constantino Gastaldi
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Dyckias, coffee (café) and Sugar...

Beitrag von Constantino Gastaldi »

Timm Stolten hat geschrieben:
chanin hat geschrieben::lol: Oh...Man ! I can't imagine Timm, licking on Dyckia's flower stalk,
I did not mean licking with your tongue directly,
take your fingertips ;-)
Sometimes the nectar crystallizes and you end up with pure sugar.
Not enough for a cup of coffee but enough to enjoy.
Yes, Timm and Cahanin, my two friends we are studying these plants "in locu" that is very remarkable. The Universidade Federal de São Paulo is one of the most respectable Centers of Knowledge developing in the planet. We are very proud of it! I enjoyed the reading and got moved when I read the original text in my language Portuguese. Thank you. Here we have one wonderful small group, in the net, and the members are all very fond of Dyckias. In this group we have authentic scientists, agronomers and Dyckias specialists. We share pics taken in our during trips to nature. I Think it would be very good for everybody that Timm and Shanin to be part of it. There are a few members from argentina and they write in Spanish. There would be some problem with English and a big problem with the Charming Göethe language but I can translate every message. with just a million error but... ( It will take just a little while for my Mandarin to be as bad as my German). What about?
Constantino
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chanin
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Beitrag von chanin »

That sound great :D
With my very pleasure Constantino, I would be really appreciated to join with your group.
I have a lot of question about your environment and your amazing Dyckias in their habitat.

Here, as you mentioned, we also have a kind of tiny bee which act as a Dyckia pollinator.

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I would like to meet new friends in other part of the world and would be glad to trade plants or seed from this part of the world.
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chanin
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Registriert: Dienstag, 11 Oktober 2005, 12:56
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Beitrag von chanin »

Hi guys :D
It set seeds right now, I noticed at least 8 seed pods has been done.
I hope the crosses that I made with Dyckia estevesii and x
Dyckcohnia
'Conrard morton' could be success.

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I would like to meet new friends in other part of the world and would be glad to trade plants or seed from this part of the world.
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