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Phalaenopsis bellina has a fibrous root system, with roots usually emerging near the base of the stem. The root is composed of a spongy outer layer called the velamen , which is responsible for protecting underlying cells from UV rays and physical damage, as well as absorbing water.
Phalaenopsis (/ ˌ f æ l ɪ ˈ n ɒ p s ɪ s /), also known as moth orchids, [2] is a genus of about seventy species of plants in the family Orchidaceae.Orchids in this genus are monopodial epiphytes or lithophytes with long, coarse roots, short, leafy stems and long-lasting, flat flowers arranged in a flowering stem that often branches near the end.
Orchids and other tropical flowers are extremely important to the agricultural economy of many Southeast Asian countries. The Vanda 'Miss Joaquim' orchid hybrid is Singapore's national flower. According to the Orchid Society, the world market for orchids is worth more than $1 billion with Japan and the United States leading the way in 2010. [ 11 ]
The following is a list of intergeneric hybrids recognised by the Royal Horticultural Society that includes species of Phalaenopsis as ancestors, as at February 2022: [6]. × Aeridopsis (Aerides × Phalaenopsis)
Most important to disease management is exclusion because D. dadantii can move through vegetatively propagated tissues asymptomatically. Therefore, it is important to have certified disease-free stock. Some promising biological control research is being done for orchid species. D. dadantii has been studied in commercially valuable Phalaenopsis ...
The disease is an ssRNA that injects itself into the host cell, then has the host cell duplicate the RNA sequence as well as the coat protein used to disguise the RNA. [4] The infected cell also starts to create movement proteins that facilitate the movement of the virus through the plant making the plasmodesmata (connections between plant ...
The flowers are of unusual shape for the genus and arise between late June to early July from pendulous, many-flowered, 20-30 cm long inflorescences, which exceed the leaves in length. [5] The many-flowered inflorescences resemble a flying swarm of insects. [6] The greenish-yellow flowers with brown bands are 1.2 cm wide.
In Phalaenopsis species with horizontal stems, such as P. hieroglyphica, the leaves are pendant and grow downward to drain rainwater away from the plant. The reproductive organ is the column, found between the two largest petals of Phalaenopsis orchids. The lip, connected to the flower by the column, aids in pollination.