Triticosecale X plant2 NC : 無料・フリー素材/写真
Triticosecale X plant2 NC / Macleay Grass Man
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Introduced cool-season annual grass to 1.3 m tall. Stems are erect or geniculate at the lowest node. Leaves are mainly cauline; ligule are 2–4 mm long and membranous. Flowerheads are distichous spikes with spikelets placed with their broadest side to the axis. Spikelets are solitary with bisexual florets, distal florets usually reduced. Glumes are 9–12 mm long, asymmetrically keeled and more conspicuously ciliate towards the apex; awn terminal 3–4 cm long. Lemmas are 10–15 mm long and ciliate towards the apex; awn terminal and 3–50 mm long. This 'genus' consists of hybrids between species of Secale and Triticum. Natural hybrids between the 2 genera are uncommon, even where both genera are native. Man-made hybrids between the 2 genera are becoming increasingly important as cereal crops. These hybrids often have a complex ancestry involving multiple hybridisations, backcrossings and artifically-induced chromosome doubling. The genetic material in some cultivars is derived almost entirely from Triticum, whereas in others it is almost entirely from Secale, with most falling in between these 2 extremes. Beacuse of the varied and complex ancestry of different X Triticosecale hybrids, it is best to treat the cultivars as such |
| 撮影日 | 2015-09-07 09:08:38 |
| 撮影者 | Macleay Grass Man , Dungog, Australia |
| タグ | |
| 撮影地 | Mitchells Flat, New South Wales, Australia 地図 |
| カメラ | Canon PowerShot A650 IS , Canon |
| 露出 | 0.001 sec (1/1250) |
| 開放F値 | f/3.5 |
| 焦点距離 | 13745.7045454545 dpi |