Aegilops crassa (Gintzburger et al., 2003)

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Psylliostachys suworovii
Gintzburger et al., Rangelands in Uzbekistan, 2003
Aegilops crassa (Gintzburger et al., 2003)
Aeluropus litoralis
Aegilops crassa
Aegilops kotschyi
Aegilops kotschyi

Aegilops crassa Boiss.

Local name:

  • Russian: Эгилопс растопыренный - ègilops rastopyrennyj
  • Uzbek: Kasmaldak

Chromosome number: 2n = 28, 42 (Percival 1932); 2n = 14, 28 (Popova 1928).

Description and morphology: Annual grass (height 20–30 cm), glabrous. Stem: usually bent at base. Leaves: wide lanceolate (up to 8 mm), slightly pubescent, especially along margins. Spikes 10–15 (5–6 mm), awned, adpressed hairy, cylindrical, slightly flexuous, tapering towards tip; 6–10 spikelets, cylindrical, solitary and flat at each joint of rachis. Several-flowered (3–5), fragmenting as a unit when dry with adjoining rachis internode. Lemma of terminal spikelet ending in awn (5–8 cm). Glumes (4–6 mm long), glabrous with rounded back and truncate, slightly toothed or awned apex.

Reproduction: Sexual. Flowering: April–May. Fruit maturation: end of May. Fruit: caryopsis compressed with hairy apical accessory and seed coat fused to pericarp. Seed: well differentiated embryo, lying at base of seed and bordered with tough endosperm. Dormancy B1 type. Low germination of fresh collected seed. Dry storage for 0.5–1 year breaks seed dormancy. Stratification (5 °C), removal of seed coat and chemical treatment considerably increase germination. Seed viability 1.5–3.0 years.

Pastoral importance: Well grazed when green by all livestock; almost untouched when dry. Contribution to biomass is estimated at 0.3–0.5 t/ha under range conditions.

Fodder value: At flowering contains (% DM): crude protein 11; fat 2.1; cellulose extract 54; ash 10. Chemical composition changes at fruit stage: protein 11; fat 5.1; cellulose 32; ash 11; nitrogen-free extract 40.

Habitat: Grows in patches of many individuals. Occurs on disturbed sites, and is common on adyr rangeland and on roadsides on loamy soils.

Distribution: Irano-Turanian region (Central Asia to Palestine), Middle Asia (foothills of Kopetdag, Tien Shan and Pamir-Alai), Caucasus, Asia Minor, Iran, Afghanistan, Kashmir and Mediterranean region.

Other: Aegilops sp.