Glycine

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Glycine
Glycine soy

Glycine soy

Systematics
Eurosiden I
Order : Fabales (Fabales)
Family : Legumes (Fabaceae)
Subfamily : Butterflies (Faboideae)
Tribe : Phaseoleae
Genre : Glycine
Scientific name
Glycine
Willd.
Illustration of soybean ( Glycine max )
The habit and leaves of the soybean ( Glycine max ) in the field
Soybean legumes ( Glycine max )
Soybean seeds ( Glycine max )

Glycine is a genus in the subfamily Schmetterlingsblütler (Faboideae) within the family of the Leguminosae (Fabaceae). The generic name is derived from the Greek word for sweet ('glykýs'). There are about 28types of Glycine . It is one of the genera of the Faboideae, the species ofwhich are called beans .

description

Glycine species grow as creeping or climbing, more rarely independently erect, perennial or erect annual herbaceous plants . The taproot can become lignified. They are not armed with spikes or thorns. The climbing species wind their way up counterclockwise. The arranged and alternate spiral or two lines is distributed on stem leaves are stalked, herbaceous or leathery, and usually feathered unpaired. There are usually three 1.5 to 7.5 cm long pinna flake present, the leaves are therefore three parts. The flat leaflets are entire. The two persistent or early falling stipules are free from each other and not fused with the petiole; they can be designed very differently, sometimes they are just scale-shaped.

The flowers are in stalked, terminal or mostly lateral, compound racemose or umbel-like tufted inflorescences . There are bracts available. Usually small, keeled bracts stand under the base of the sepals and form a secondary calyx.

The stalked or sessile, small, hermaphrodite flowers are zygomorphic and five-fold. The five unequal sepals are fused with two calyx lips, the calyx lips are at most as long as the calyx tube. The upper calyx lip consists of two calyx lobes that are fused up to about half their length; the lower calyx lip consists of three egg-shaped or triangular calyx lobes. The flower crowns have the typical structure of the butterfly flowers. There are five nailed, hairless petals , four of which are fused. The colors of the petals are white or range from purple to blue. The normally developed flag is not spurred or eyed and has no appendages. The shuttle is normally developed. The unspired wings are fused with the shuttle. The ten fertile stamens are not fused with the petals and significantly longer ones alternate with shorter ones. The stamens have grown together to form a tube, one of which becomes free from the tube with age. There are nectar glands on the disc. The individual upper carpels contain only two to ten ovules . The short, slightly curved style is hairy but not bearded or hairless and ends in a cephalic scar.

There are very short-stalked legumes formed. In a few species, the legumes are in the ground, similar to the peanut ( Arachis hypogaea ). The most short-stalked legumes are 10 to 30 mm long, have different hairs but are not prickly, straight to curved, septate between the seeds and more or less constricted depending on the type. The underground fruits usually contain only one seed, the fruits that ripen in the air usually only contain two to four, rarely five seeds. The small seeds have a small hilum and a scale-shaped aril . The hard seed coat is hairless and of a single color. The unit of dissemination ( diaspore ) is the seed.

use

Actually only the cultivated form soybean ( Glycine max ) is cultivated in many varieties as an important crop.

Since they fix nitrogen ( Rhizobium root nodules ), they are important for soil improvement.

Systematics and distribution

The range includes mainly Australia (24 to 26 species); only a few species occur in eastern Asia.

The genus Glycine belongs to the subtribe Glycininae of the tribe Phaseoleae in the subfamily Butterflies (Faboideae) within the family of legumes (Fabaceae). The genus Glycine was published in 1798 by Carl Ludwig Willdenow in Botanical Observations , page 54. The name Glycine L. published in Sp. Pl , 753 is not valid. Synonyms for Glycine Willd. are: Chrystolia Montrouz. , Leptocyamus Benth. , Leptolobium Benth. , Soy Moench .

The genus Glycine is named after G. Lewis, et al., Eds .: Legumes of the world. (Leg World), 2005, 421 divided into two sub-genera with (10 to) about 28 Glycine species:

  • Subgenus Soy (Moench) FJHerm. : With two types:
    • Soybean ( Glycine max (L.) Merr. ): It is only known from culture; its wild form is probably Glycine soy sieve. & Zucc. is.
    • Glycine soy strainer. & Zucc. : It is at home in China, Taiwan, Japan, Korea and in Far Eastern Asian Russia.

No longer belongs to this genus:

Notice

This genus is not to be confused with Glycinen, Glycinien, Glyzinen, Wisteria, Wisteria whose botanical name is Wisteria .

Individual evidence

  1. a b c d e f g h i j k l m n o p q r s t u v w x y z aa ab ac ad Glycine subg. Glycine in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.

See also

literature

  • SI Ali: Papilionaceae. In: Flora of Pakistan.
  • Leslie Watson: Papilionaceae. In: Western Australian Flora. 2008. (Online with the 12 species occurring there)
  • BEPfeil, MDTindale: Faboideae. In: New South Wales Flora Online. (with identification key of the 12 species occurring there)

Web links

Commons : Glycine  - collection of images, videos and audio files