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无脉叶片

与 无脉叶片 相关的网络例句 [注:此内容来源于网络,仅供参考]

Leaves sessile or subsessile; blade ovate or oblong to elliptic or oblanceolate or linear,(0.3-)0.8-2.5 cm × 3-12 mm; thickly papery to subleathery, abaxially glaucous or sometimes minutely papillose; laminar glands pale, dots, rather sparse, prominent above; intramarginal glands black, dense or irregular; main lateral veins 3- or 4-paired, sometimes forming ± marked submarginal vein, tertiary reticulation lax or obscure; base cuneate to angustate, margin entire and recurved, apex acute to rounded.

叶无柄或近无柄;线形的卵形的叶片或长圆形到椭圆形或倒披针形或,(0.3-)×3-12毫米0.8-2.5厘米;厚纸质到近革质,背面苍白或有时稍具小乳突;片状腺体苍白,小圆点,相当稀,在上面突出;近边缘内腺体黑色,浓或者不规则;主要侧脉3-或4对,有时形成多少显著的亚缘脉,第三级网脉疏松或不明显;基部楔形到狭,边缘全缘和下弯,先端锐尖到圆形。

The results are as follows:(1) The morphological investigation indicated that the nectaries werelacked on the main nervation, calyx and bract of cotton line 97014 comparedwith TM-1. Alveolate hollow was absent at main nervation of the mature leaf.Results of cytological analysis showed that 97014 lacked nectariferous structure.Where nectary inserted were parenchyma cells, cupped structure and brownnectariferous substance on the lower epidermis were not found.

主要研究结果如下:(1)以棉花无蜜腺品种97014与有蜜腺棉花遗传标准系TM-1为材料,进行形态学比较研究,结果表明棉花无蜜腺品种97014叶片中脉、花萼和苞叶上都缺少蜜腺,成熟叶片叶脉、花萼和苞叶上均无蜂窝状凹陷;组织与细胞切片观察发现,97014缺少蜜腺组织结构,在蜜腺着生处为排列整齐的薄壁细胞,且在下表皮看不到凹陷的组织结构和褐色的蜜腺分泌物。

Leaves trifoliolate; lateral leaflets subsessile, petiolule of terminal leaflet 2-4 cm; leaflet blades oblong-lanceolate to elliptic, 5-10 cm, subcoriaceous, glabrous or densely pubescent on abaxial surface when young and pubescent along veins when mature, green adaxially, pale green abaxially, lateral veins 7-10 pairs, base obtuse to rounded, sometimes oblique on lateral leaflets, margin serrulate with hard teeth, apex narrowly acuminate.

叶具三小叶;近无柄的侧生小叶,顶生小叶的小叶柄2-4厘米;小叶叶片长圆状披针形的到椭圆形,5-10厘米,近革质,在背面上幼时无毛的或密被短柔毛的,成熟时短柔毛沿脉,正面绿色,背面浅绿色,侧脉7-10对,基部钝到圆形,有时在侧生小叶上斜,边缘细锯齿具硬齿,先端狭渐尖。

Petiole 0.5-6.5 cm; leaf blade elliptic to ovate or broadly lanceolate, sometimes falcate, 5-20 X 2-8 cm, adaxially glabrous to sparsely pubescent, abaxially glabrous, base usually oblique, cuneate to narrowly cuneate, margin serrate to entire, rarely undulate or crenate, apex acuminate to acute, vermiform sclereids surrounding vascular bundles; lateral veins 4-14 on each side of midrib.

叶柄0.5-6.5厘米;有时,宽披针形的叶片椭圆形到卵形或,5-20 X 2-8厘米,正面无毛到疏生短柔毛,背面无毛,基础通常斜,侧脉4-14在中脉每边各。

Leaves crowded toward apex of stems or spaced along distal part of stems, sessile or petiolate; petiole to 8 cm, base amplexicaul; leaf blade usually sword-shaped to elliptic-lanceolate, veins truly parallel from base, lateral veins absent.

叶密集向茎先端,或在茎上部间隔的,无柄或具叶柄;叶柄给8厘米,基部抱茎;叶片通常剑形到椭圆形披针形,脉真地平行的自基部,侧脉无。

Leaves simple, usually alternate, rarely opposite or verticillate, sometimes crowded at apices of branches; stipules usually small and caducous, sometimes larger, leaflike and persistent, rarely absent; petiole generally present, sometimes with apex 2-glandular and/or with additional glands along petiole length; leaf blade usually pinnate-veined, sometimes 3-5-veined from base or palmate-veined, with or without pellucid dots or lines, sometimes with a pair of glands at junction of blade and petiole, margin entire or toothed, teeth glandular or not. Inflorescences axillary, terminal, or cauliflorous, of various forms: racemose, spicate, cymose, corymbose, or paniculate, sometimes flowers fasciculate, or solitary; pedicels often articulate; bracts and bracteoles usually small to minute.

单叶,通常互生,很少对生或轮生,有时在枝端簇生;托叶通常小并且早落,有时大,叶状并且宿存,很少无;叶柄通常存在,有时先端有2个腺体,或沿着叶柄有腺体;叶片通常羽状脉,有时基部3-5出脉或掌状脉,有或无透明小圆点或线,花序腋生,顶生,或者茎生,或多种形式:总状,穗状,聚伞状,伞房状,或者圆锥状,有时花束状,或者单生;花梗通常有节;苞片和小苞片通常小到微小。

Leaves 1 or 2 per ultimate branch; sheath margins ciliolate; auricles absent, oral setae few, 1–2 mm; ligule truncate, ca. 0.4 mm; blade linear-lanceolate, 4–9.4 × 0.5–0.9 cm, glabrous, secondary veins 2- or 3-paired, transverse veins obscure, base cuneate, one margin spinescent-serrulate, other margin obscure.

每末级的分枝留下1或2;鞘边缘具短缘毛;叶耳无,口头的刚毛少数,1-2毫米;叶舌削去,大约0.4毫米;叶片线状披针形, 4-9.4 * 0.5-0.9 厘米,无毛,2或3配对的次脉,不明显的横向脉,基部楔形,具刺有细锯齿的一边缘,不明显的其他边缘。

Leaves 29-84 cm; petiole 7-12 cm, pilose to glabrescent, often lenticellate; rachis moderately pilose to glabrescent, occasionally velutinous; leaflets usually 6-9(-12) pairs; petiolules (2-)4-12 mm, pilose/villous to glabrescent; leaflet blades lanceolate to ovate-lanceolate, 7-14(-19.5)× 3.1-6(-7) cm, often dark grayish brown, moderately pilose to glabrescent, usually with short trichomes and club-glands apically on midveins, veins basally pilose to villous/velutinous, base symmetrical to asymmetrical, margin entire, apex acuminate to occasionally acute.

叶29-84厘米;叶柄7-12厘米,具柔毛到几无毛,通常具皮孔;轴适中具柔毛到几无毛,偶尔被短绒毛;小叶通常6-9(-12)对;小叶柄(2-)4-12毫米,具柔毛/具长柔毛到几无毛;小叶叶片披针形到卵状披针形, 7-14(-19.5)* 3.1-6(-7)厘米,经常暗灰棕色,适中具柔毛到几无毛,通常在顶部中脉上具短毛和棍状腺体,脉基部具柔毛到具长柔毛/被短绒毛,基部匀称到不对称,边缘全缘,先端渐尖到偶有锐尖。

Petiole 2.5-3.5 cm; leaf blade elliptic, lanceolate, or elliptic-lanceolate, 9-20 × 3.5-8 cm, abaxially nearly glabrous, adaxially glabrous, lateral veins 7-9 on each side of midrib, curved upward, connected near margin, base obtuse or nearly rounded, apex acute. Inflorescence paniculate, 4-10 cm, densely many-branched. Calyx reddish, divided almost to base, pubescent abaxially, lobes oblong-lanceolate or oblong-elliptic, 4-6 mm, stellately spreading, margins ciliate, apex obtuse or minutely mucronate.

叶柄2.5-3.5厘米;叶片椭圆形,披针形,或椭圆状披针形, 9-20 * 3.5-8 厘米,背面近无毛,正面无毛,侧脉7-9在中脉每边各,向上弄弯,连结接近边缘,花序圆锥状,4-10厘米,密被多分枝。

Petiole 8-20 cm, glabrous; leaf blade 5-7-foliolate; leaflets sessile, abaxially green, oblanceolate, 10-25 × 5-12 cm, abaxially glabrous or with sparse whitish hairs, ferruginous tomentose at base and in axils of lateral veins, base cuneate, margin crenate-serrate with teeth crenulate-serrulate, apex acuminate to subcaudate; lateral veins in 18-25 pairs.

叶柄8-20厘米,无毛;叶片5-7具小叶;小叶无柄,背面绿色,倒披针形, 10-25 * 5-12 厘米,背面无毛或者有稀少带白色毛的,被锈色绒毛在基部和在侧脉腋处,基部楔形,边圆齿状锯齿具细圆齿到细锯齿的牙齿,18-25对的侧脉。

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