bract

UK:  [brækt]

US:  [brækt]

复数：bracts  

n.

1.苞鳞

2.【植物;植物学】苞,托叶;苞片

1 . The bract primordium with its axillary flower primordia is dome-shaped in the beginning and then elongates.
苞片原基及其腋生的花原基最初呈圆丘状，随后伸长。

2 . Scape simple, erect, usually with a few small, bract like leaves.
花葶单一，直立，通常具一些小的，苞片状叶。

3 . Stipules lanceolate, ca. 4 mm, membranous, densely covered with short brown pubescence, glabrescent , basal ones bract like and persistent.
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。

4 . 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。

5 . 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。