Bract
英音[ brækt ] 美音[ brækt ]

[植] 苞

常用释义

词性释义

n.

[植] 苞;[植] 苞片
例句
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苞片原基及其腋生的花原基最初呈圆丘状,随后伸长。
花葶单一,直立,通常具一些小的,苞片状叶。
托叶披针形,约4毫米,膜,密被短的棕色的有毛,后脱落,基生者苞片状和持久。
Bract base decurrent; bractlet margin membranous laterally, but apex herbaceous, acute; anther appendage apex pungent.
苞片基部下延;小苞片侧面边缘膜质的,但是顶草质,锐尖;花药附属物先端锐尖。
We previously reported that SUPERNUMERARY BRACT (SNB) regulates the transition of spikelet meristems into floral meristems in rice.
我们之前已经报道过SNB(多颖壳)基因,它调控着水稻小穗分生组织向花分生组织的转变。
bract absent. Flowers bisexual, usually nodding at anthesis, ascending in fruit, spreading funnelform.
苞片无花两性,通常有节的在花期,在果期上升,平展漏斗状。
Bract base not decurrent; bractlet margin membranous throughout, apex obtuse; anther appendage apex obtuse.
苞片基部不下延;边缘膜质的小苞片全部,先端钝;花药附属物先端钝。
苞片龙骨状;小苞片清楚;穗状花序的花序,花凹陷的成为轴。
Stomatal density and stomatal index on upper epidermis of petal, bract and calyx were smaller than those on lower surface.
花瓣、苞片和花萼上表皮的气孔密度和气孔指数均小于下表皮的。
involucral bract leaflike; heads many, hemispheric, many flowered.
总苞片叶状头状花序很多,半球形,多花的。
茎生叶短叶柄,象或稍小于基生叶一样大;花萼在花期短于苞片。
pedicel slender, pubescent, subtended by a subulate bract.
花梗纤细,青春期,通过一个钻形的苞被包着。
花序腋生或侧生,与幼叶一起生出,圆锥状或总状,下垂,每苞片1花。
结果表明,花瓣、苞片和花萼上、下表皮均有气孔分布。
Male flowers solitary in axil of each bract, with 2-4 bracteoles or not.
雄花单生于苞片的腋内,有2-4小苞片或无。
Stipules persistent, often becoming a rounded, dentate bract.
托叶宿存,经常成为一圆形,有齿的苞。
花茎极短,几乎不超过叶,具1苞片在基生叶,皱波状的具腺的具长柔毛中隐瞒。
Flowers spirally arranged, (1 or)3 borne in axil of a fleshy bract, appearing sunken into fleshy rachis, without bractlets, bisexual.
花螺旋状排列,(1或)3生于肉质苞片腋的,凹陷成为肉质的轴,没有小苞片,两性。
托叶披针形,早落,不成为一个苞。
Fruit lens-shaped, attached to midrib of accrescent, membranous, reticulately veined floral subtending bract.
果透镜形,着生于增大,膜质,网状脉的花对着的苞片的中脉。
苞片柄在果期不拉长,疏生短柔毛。
1 bract subtending each flower, much broader than flower, free or connate into bell-shaped involucre.
1苞片在每朵花下面,比花宽得多,离生或合生成铃形的总苞的。
苞片边缘具线状披针形的齿,齿具头状的腺体的先端;花柱4裂。
胚珠1,着生在能育的苞片的背面的中间,最初部分倒生,成熟期变得较直立。
bracts numerous, overlapping, leathery, deciduous, apex deeply 3-lobed, each bract subtending 3 flowers.
苞片多数,重叠,革质,落叶,先端3深裂,每苞片对着3花。
合生的种子具苞片,有时具由组成的明显侧翅苞片。
花来自混合芽的,散布在幼枝基部或近基部苞片腋;
随着花的发育,花瓣、苞片和花萼上的气孔密度和气孔指数一般呈现先上升后下降的变化趋势。
Inflorescences spicate, lax, to 25 cm. Flowers subsessile, solitary from bract axils.
穗状,疏松的花序,令25厘米花的是近无柄,苞片的单生。
Flowers hermaphroditic, with 1 bract and 2 bracteoles, axillary or clustered into spikes.
花两性,具1苞片和2小苞片,腋生或簇生成穗状花序的。