Especialidades JA/Orquídeas/Respuestas

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Orquídeas

Nivel de destreza

1

Año

1964

Version

31.05.2024

Autoridad de aprobación

Asociación General

Orchids AY Honor.png
Orquídeas
Estudio de la naturaleza
Nivel de destreza
123
Autoridad de aprobación
Asociación General
Año de introducción
1964
Vea también


1

Definir las características de una orquídea.



2

¿Cuáles son los dos grupos principales de orquídeas? Nombrar y mostrar ejemplos de cada una de plantas vivas o en imágenes.


  • Apostasioideae: 2 group(s) in this sub-family and 16 species, south-western Asia
  • Cypripedioideae: 5 group(s) in this sub-family and 130 species, mostly from the temperate regions of the world, some in tropical America
  • Vanilloideae: 15 group(s) in this sub-family and 180 species, humid tropical and subtropical regions, eastern North America
  • Epidendroideae: more than 500 group(s) in this sub-family and more or less 20 000 species, cosmopolitan
  • Orchidoideae: 208 group(s) in this sub-family and 3,630 species, cosmopolitan

The last two, Epidendroideae and Orchidoideae are the largest subfamilies (main groupings).


3

¿Cuáles son las diferencias entre orquídeas epífitas, parasitarias y saprófitas?


Saprophytic

A saprotroph (or saprobe) is an organism that obtains its nutrients from non-living organic matter, usually dead and decaying plant or animal matter, by absorbing soluble organic compounds. They cannot make food for themselves.


4

Discutir la distribución de orquídeas, haciendo particular referencia a la ocurrencia de estas en su área.


The following list gives a rough overview of their distribution:

  • tropical America: 300 to 350 genera
  • tropical Asia: 250 to 300 genera
  • tropical Africa: 125 to 150 genera
  • Oceania: 50 to 70 genera
  • Europe and temperate Asia: 40 to 60 genera
  • North America: 20 to 30 genera


5

Mencionar los géneros principales de orquídeas cultivadas. Identificar tres plantas o imágenes. ¿Qué es cultivar?

Most cultivated orchids are tropical or subtropical, but quite a few which grow in colder climates can be found on the market.

Temperate species available at nurseries include:

The main cultivated genera of orchids is Epidendroideae.

6

Discutir los aspectos principales esenciales a observar al cultivar orquídeas. Cultivar por lo menos una orquídea durante al menos seis meses.
Do from home
Tip for earning from home during the pandemic
This is only possible in some locales unless the orchid is already being grown in the homes prior to stay-at-home orders. However some grocery stores do offer live orchids for sale, so it might be possible to get one while grocery shopping (do not make a special trip just for an orchid).
  • Light - is important in all living things.
  • Temperature - mature plants need a 15-20 degree F temperature difference between day and night.
  • Water - seedlings need more moisture, mature plants must dry out between watering.
  • Humidity -
  • Fertilizer - remember that these are usually parasitic plants.
  • Potting - plant in material that allows good aeration and drainage.

The Wikipedia article Hippeastrum has detailed instructions for growing this orchid throughout the year. Another common houseplant orchid is the Cymbidium.

Another option is to grow your orchids using hydroponics, which satisfies a requirement of the Voyager curriculum. Again Wikipedia has an article called "Hydroponics for orchid cultivation" which is filled with important details.

Have a fun time growing your orchid(s).

7

¿Cuáles son los usos principales de orquídeas? ¿Qué orquídeas se utilizan comercialmente?

Main Uses of Orchids

  • The underground tubers of terrestrial orchids (mainly Orchis mascula) are ground to a powder and used for cooking, such as in the hot beverage salep or the so-called "fox-testicle ice cream" salepi dondurma.
  • The scent of orchids is frequently analysed by perfumists (using Gas-liquid chromatography) to identify potential fragrance chemicals.
  • The other important use of orchids is their cultivation for the enjoyment of the flowers.

What orchid is used commercially?

  • Vanilla is a flavoring derived from orchids in the genus Vanilla native to Mexico. The name came from the Spanish word vainilla, meaning little pod.

8

Conocer las leyes en su área (si existen) que protegen orquídeas silvestres.

Navasota Ladies'-Tresses

The Navasota Ladies'-Tresses (Spiranthes parksii) is on the Federal endangered species list

Reason for Concern: Navasota ladies-tresses is endemic to the Oak Woodlands and Prairies region of east-central Texas. Once thought to be extremely rare, it is now known to be locally common in parts of its range. However, many of the sites are near an active coal stripmining operation. Other sites are within the area of Bryan-College Station and are threatened by the rapid development of this metroplex.

Pink Lady's Slipper

Cypripedium acaule, or Pink Lady's Slipper, is endangered in Nova Scotia, Canada, and in the U.S. States of Georgia, Tennessee, Illinois, and New York. Because of a fungus association needed for growth, and the high acid this plant needs, C. acaule is very difficult to grow in the average garden and is unlikely to survive any attempts at transplantation. It should not be removed or disturbed if found in nature.


Showy Lady's Slipper

Cypripedium reginae, or Showy Lady's Slipper is endangered (or extirpated) in the U.S. States of Arkansas, Connecticut, Illinois, Iowa, Kentucky, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, and Tennessee.