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Bromus comes from a Greek word for a type of oat, and tectorum comes from tector which means overlaying and tectum which means roof. [2] Bromus tectorum is a winter annual grass native to Eurasia usually germinating in autumn, overwintering as a seedling, then flowering in the spring or early summer. [9]
Bromus is a large genus of grasses, classified in its own tribe Bromeae. [ 2 ] [ 3 ] They are commonly known as bromes , brome grasses , cheat grasses or chess grasses . Estimates in the scientific literature of the number of species have ranged from 100 to 400, but plant taxonomists currently recognize around 160–170 species.
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Ripgut brome or ripgut grass refers to some species of brome grasses: . Bromus diandrus (great brome); Bromus rigidus (stiff brome); The name refers to the fact that even for brome grasses, these species are heavily sclerotized and can cause harm to livestock that feed on them.
The two species have some differences in their germination behaviour as well. [3] Bromus sterilis, or sterile brome, is similar in most morphological features. It is a slightly smaller plan, an annual or a biennial plant. [2] Bromus hordeaceus, known as soft brome, is
After the germination rates were tested, there was a comparison of the lengths and widths of the pollen tubes between the two plants. The pollen tubes of the wild-type plants had a greater pollen tube length than the mutants, but the mutants had a greater tube width.
Bromus japonicus is an annual or biennial tufted grass growing 0.2–1 m (7.9 in – 3 ft 3.4 in) high. The culms are erect or ascending. The sheaths of the grass are pubescent, though upper sheaths are occasionally glabrous.
Bromus arvensis is an annual or biennial grass with erect culms growing 0.3–0.9 m (1 ft 0 in – 2 ft 11 in) tall. The grass has an extensive fibrous root system. The leaf sheaths are softly pubescent and leaf blades are pubescent on both faces.