bract scale

bract scale的基本解释

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苞鳞

与bract scale相关的网络例句 [注：此内容来源于网络，仅供参考]

Bract scale The structure found in large numbers in the female cone of gymnosperms, each bearing an ovuliferous scale in its axil.

苞鳞：在裸子植物的雌球果中大量存在的结构，每个苞鳞都包含一个珠鳞。

For example, the spiral arrangement (of scale – bract complexes) is important , thereby passing airborne pollen from one scale to the next.

比如说，螺旋状安排，是重要的，这样才能把空气传播的花粉从一个 s 传播到另一个 s 。

Reduction of ovule number as a tendency of speciation in the genus is substantiated by the occurrence of tri_ovulate cones coupled with comprehensive characters of the genus. The metamorphic patterns as well as the leaf nature of the outer envelope indicate that female cones of Ephedra are compound while the female reproductive units of the ovulate cone have been reduced from secondary reproductive shoots similar to those of cordaites by phylogenetic transformation, fusion and reduction. Each fertile bract together with its axillary female reproductive unit composed the Bract Scale and Seed Scale Complex of Ephedra .

基于返祖性畸形三胚珠球花的出现及其他形态特征，认为麻黄属胚珠数目减少是该属内物种特化的一个趋势；利用雌球花发育的畸形现象及外珠被的形态学本质提出麻黄属的雌球果为复轴性构造，雌性生殖单位是由类似于科达类的次级生殖枝构造经系统发育变态、融合、简化成现存的生胚珠构造式样，每一可育苞片及其腋内雌性生殖单位共同组成了麻黄属的苞鳞_种鳞复合体。

According to Bract Scale and Seed Scale Complex theory and the observation results in this experiment, the author considers that the Gnetum genus belongs to the evolvement line ofBSSC. and is more closer to conifers than other seed plant.

根据苞鳞-种鳞复合体理论，结合本文的观察结果，作者认为买麻藤属植物是苞鳞-种鳞复合体演化线上的成员，与松杉类植物的关系比较近。

For example, the spiral arrangement (of scale – bract complexes) is important , thereby passing airborne pollen from one scale to the next.

比如说，螺旋状安排，是重要的

与bract scale相关的网络解释 [注：此内容来源于网络，仅供参考]

bract scale：苞鳞

bract leaf 苞 | bract scale 苞鳞 | bracteal 苞的