Orchid Biology and Horticultural Production Flashcards

Flashcards about orchid biology and horticultural production. Vocabulary style flashcards defining key terms and concepts from the lecture notes.

Orchid

Flowering monocots with modified flower parts in multiples of 3, predominantly grown for their flowers.

Orchidaceae

The orchid family, containing over 800 genera and 25,000 species.

Terrestrial Orchid

Orchids that grow out of the soil, obtaining nutrients and structure from the soil and its solution.

Lithophytic Orchid

Orchids that cling to rock faces and crevices, obtaining nutrients from the rock surface and the air/rain.

Epiphytic Orchid

Orchids that cling to other plants or their remnants, obtaining most of their nutrients from the air/rain.

Velamen

Spongy tissue on the outer root of orchids that absorbs water.

Pseudobulbs

Fleshy stems in orchids that store water and nutrients.

Phalaenopsis

The moth orchid, a popular orchid for mass market sales.

Cymbidium

An orchid that requires high light levels (2000-4000 ft c.).

Dendrobium

A common cut-flower orchid.

Epidendron

An orchid that tolerates drier conditions.

Miltoniopsis

The pansy orchid.

Paphiopedilum

The lady slipper orchid, requires roots to be kept moist.

Explant

Shoot tip, Leaf segment, Flower bud, Rhizome segment, or Root segment used in tissue culture.

Protocorm-like bodies (PLBs)

Structures formed during micropropagation of orchids, leading to plantlet development.

Shoot tip culture

In vitro production of orchids using meristem culture.

Leaf segment culture

Production of PLBs from Cymbidium leaves.

Intergeneric Hybridization

Crossing species from different genera to produce offspring with new morphologies, increased vigor, and flower size.

sympodial orchids