species information (Systematics, BiolFlor-Names, Status) |
BiolFlor-Name |
family |
german name(s) |
Hordeum jubatum L. |
Poaceae » |
Mähnen-Gerste
|
reference |
Kühn, I., Klotz, S. 2002: Systematik, Taxonomie und Nomenklatur. In: Klotz, S., Kühn, I., Durka, W. (Hrsg.): BIOLFLOR - Eine Datenbank mit biologisch-ökologischen Merkmalen zur Flora von Deutschland. Schriftenreihe für Vegetationskunde. Bonn »
|
|
Synonymy (taxonomy after Wisskirchen & Haeupler, 1998) |
Hordeum jubatum L. |
accepted |
|
Chromosome number » |
Basic chromosome number |
7 |
Chromosome number 2n |
28 |
Chromosome number (Germany) |
False |
Most common chromosome race |
False |
Ploidy level |
4 (tetraploid) |
Ploidy type |
P (polyploid with haploid basic number) |
Reference |
Oberdorfer, E. 1983: Pflanzensoziologische Exkursionsflora. Ulmer, Stuttgart |
Basic chromosome number |
7 |
Chromosome number 2n |
42 |
Chromosome number (Germany) |
False |
Most common chromosome race |
False |
Ploidy level |
|
Ploidy type |
|
Reference |
Oberdorfer, E. 1983: Pflanzensoziologische Exkursionsflora. Ulmer, Stuttgart |
Basic chromosome number |
7 |
Chromosome number 2n |
14 |
Chromosome number (Germany) |
False |
Most common chromosome race |
False |
Ploidy level |
|
Ploidy type |
|
Reference |
Oberdorfer, E. 1983: Pflanzensoziologische Exkursionsflora. Ulmer, Stuttgart |
|
DNA content » |
DNA content (pg/2C) |
21.7 |
Chromosome number |
28 |
Quality |
chromosome number known and occurring in Germany [b] |
Authorised in BENNET & LEITCH 2001 |
True |
Reference |
Bennett, M.D., Smith, J.S. 1976: Nuclear DNA amounts in angiosperms. Philosophical Transactions of the Royal Society London B 274:227-274 |
|
Flowering phenology » |
Begin of flowering (months) |
6 |
End of flowering (months) |
7 |
Duration of flowering (months) |
2 |
Number of flowering phases |
0 |
Symphenological Groups » |
Phenological group |
7 (Ligustrum-Stachys sylvatica-Phase) Phenological season: end of early summer |
Reference |
Dierschke, H 1995: Phänologische und symphänologische Artengruppen von Blütenpflanzen in Mitteleuropa. Tuexenia 15: 523-560 |
|
Type of reproduction » |
Type of reproduction |
ssv (mostly by seed, rarely vegetatively) |
Reference |
Best, K.F., Banting, J.D., Bowes, G.G. 1978: The biology of Canadian weeds. 31. Hordeum jubatum L.. Canadian Journal of Plant Science 58:699-708 |
Type of seed production » |
Type of seed production |
s (amphimictic, sexual) |
Reference |
Best, K.F., Banting, J.D., Bowes, G.G. 1978: The biology of Canadian weeds. 31. Hordeum jubatum L.. Canadian Journal of Plant Science 58:699-708 |
Dicliny » |
Dicliny |
am (andromonoecious) |
Abundance |
always [1] |
Reference |
Connor, H.E. 1979: Breeding system in the grasses: a survey. New Zealand Journal of Botany 17:547-574 |
Self-sterility and self-incompatibility » |
Self-sterility and self-incompatibility |
SC (self-compatibel) |
Reference |
East, E.M. 1940: The distribution of self-sterility in the flowering plants. Proceedings of the American Philosophical Society 82:449-518 |
Systematic reference |
species [S] |
Pollen vector » |
Pollen vector |
se (selfing) Pollen vector group: se (Selbstbestäubung) |
Abundance |
the rule [2] |
Reference |
Best, K.F., Banting, J.D., Bowes, G.G. 1978: The biology of Canadian weeds. 31. Hordeum jubatum L.. Canadian Journal of Plant Science 58:699-708 |
Systematic reference |
species [S] |
Breeding system » |
Breeding system |
AO (autogamous) |
Reference |
Best, K.F., Banting, J.D., Bowes, G.G. 1978: The biology of Canadian weeds. 31. Hordeum jubatum L.. Canadian Journal of Plant Science 58:699-708 |
Flower class after MUELLER » |
Flower class after MUELLER |
W (wind flowers) Typical pollinators: - |
Flower type after KUGLER » |
Flower type after KUGLER |
0 (not applicable) |
|
Fruit type » |
Fruit type |
Nu (nut) |
Diaspore type » |
Diaspore type |
TFSt (part of infructescence) |
Germinule type » |
Heteromorphic type |
n (not heteromorphic) |
Germinule type |
F (fruit) |
Information available |
True |
Development of nutritious appendages |
|
Development of flat appendages |
|
Development of elongated appendages |
sometimes [2] |
Development of additional appendages |
|
Heteromorphic type |
n (not heteromorphic) |
Germinule type |
FZb (fruit with appendage) |
Information available |
True |
Development of nutritious appendages |
|
Development of flat appendages |
|
Development of elongated appendages |
always [1] |
Development of additional appendages |
always [1] |
Sizes » |
Measured object |
Germinule |
Type of germinule or diaspore |
F (fruit) |
Constraint |
False |
Heteromorphic type |
n (not heteromorphic) |
Length (minimum) [mm] |
2.0 |
Length (mean) [mm] |
2.7 |
Length (maximum) [mm] |
3.5 |
Width (minimum) [mm] |
0.7 |
Width (mean) [mm] |
1.0 |
Width (maximum) [mm] |
1.2 |
Height (minimum) [mm] |
0.2 |
Height (mean) [mm] |
0.2 |
Height (maximum) [mm] |
0.3 |
Measured object |
Germinule |
Type of germinule or diaspore |
FZb (fruit with appendage) |
Constraint |
True |
Heteromorphic type |
n (not heteromorphic) |
Length (minimum) [mm] |
5.0 |
Length (mean) [mm] |
6.2 |
Length (maximum) [mm] |
8.0 |
Width (minimum) [mm] |
1.0 |
Width (mean) [mm] |
1.1 |
Width (maximum) [mm] |
1.4 |
Height (minimum) [mm] |
0.5 |
Height (mean) [mm] |
0.6 |
Height (maximum) [mm] |
0.8 |
special references:
|
Grime, J.P., Mason, G., Curtis, A.V., Rodman, J., Band, S.R., Mowforth, M.A., Neal, A.M., Shaw, S. 1981: A comparative study of germination characteristics in a local flora. Journal of Ecology 69:1017-1069 (Gattung)
|
Beijerink, W. 1947: Zadenatlas der Nederlandsche Flora. Biol. Stat. Wijster, Wageningen (Gattung)
|
Brouwer, W., Stählin, A. 1955: Handbuch der Samenkunde. DLG-Verlag, Frankfurt/Main (Gattung)
|
|
Habitat » |
Habitat |
H2 (Inland saline habitats) Alliance: ???
|
Occurrence questionable |
False |
Occurence restricted |
False |
Annotation |
|
Habitat |
T10.3.4.1 (null) Alliance: ???
|
Occurrence questionable |
False |
Occurence restricted |
False |
Annotation |
Salz |
Habitat |
T7.4.1 (null) Alliance: Lolio-Potentillion
|
Occurrence questionable |
False |
Occurence restricted |
False |
Annotation |
|
Habitat |
T8.3.1 (null) Alliance: Sisymbrion
|
Occurrence questionable |
False |
Occurence restricted |
False |
Annotation |
|
|
Class » |
English circumscription |
05.5 (Communities of flooded and trampled grasslands) Class: Agrostietea stoloniferae
|
English circumscription |
06.4 (Annual ruderal communities) Class: Sisymbrietea officinalis
|
English circumscription |
06.5 (Eusiberian ruderal mugwort and thistles communities, and couch-grasslands) Class: Artemisietea vulgaris
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