The tapetum degenerates too early.
绒毡层过早退化；
Tapetum belong the secretory type.
绒毡层属腺质型。
Tapetum conforms to secretory type.
绒毡层为分泌型。
The development of tapetum is glandular type.
花药绒毡层属腺质绒毡层类型。
The tapetum belongs to the periplasmodial type.
绒毡层属于周原质团型。
The tapetum belongs to glandular type and has two nuclei.
绒毡层细胞为腺质，二核。
In flowering plants, tapetum plays an important role in pollen development.
高等开花植物的花药绒毡层在花粉发育中发挥十分重要作用。
The features of structure of anther wall are of one meddle layer and glandular tapetum.
药壁的结构特点为一层中层和腺质绒毡层。
Tapetum (pl. tapeta) A food-rich layer surrounding the spore mother cells in the anthers of vascular plants.
绒毡层：维管植物花粉囊内包围孢子母细胞的富含营养物质的一层结构。
The anther is made up of an outer epidermis, a middle fibrous layer, and an inner nutritive layer, the tapetum.
花药壁由外表皮层，中间纤维层，内部营养层和绒毡层构成。
Be pregnant 3-5 in month, the nasciturus' tapetum development needs to depend on parent population to supplies ample thyroxine.
怀孕3 - 5个月时，胎儿的脑发育需要依赖母体供给充足的甲状腺素。
The main pathways of causing empty anther sacs are obvious enlargement and liquidization of tapetum cells from tetrad to slope nucleus early period;
空囊产生的主要途径：①四分体至单核早期绒毡层细胞体积发生明显的增大、液化；
The tapetum of P. hortorum belongs to periplasmodial tapetum. The invasion into the locule occurs when microspore form large vacuole in its cytoplasm.
天竺葵的绒毡层属周原质团绒毡层，其原生质体侵入药室的时间发生在小孢子中大液泡开始形成的时期。
Combining cell morphology, the growth and decline state of tapetum in anther wall tissue are closely related with pollen fertility and amino acid metabolism.
结合细胞形态学观察，药壁组织的绒毡层的发育与解体状况和花粉育性、氨基酸代谢有着密切关系。
Megaspore tetrad is linear. the chalazal megaspore develops into an embryo sac of polygonum type. Hypostase and special integument tapetum exist in the ovule.
大胞子四分体线形排列，合点端大孢子为功能大孢子，胚囊发育类型为蓼型，具有特化的珠被绒毡层和承珠盘。
The mature embryo sac is surrounded by en lothelium tapetum. It is composed or an egg apparatus, one central cell with secondary nucleus, and 1—6 antipodal cells.
成熟胚囊被珠被绒毡县包围，由卵器、具次生核的中央细胞以及数目为1至6个反足细胞组成。
The specialist suggests that the pregnant woman eats 1-2 fishes at least within a week to absorb ripe DHA and satisfies the nasciturus' tapetum development demand.
专家建议，孕妇在一周之内至少吃1-2次鱼，以吸收足够的DHA，满足胎儿的脑发育需求。
The middle layer cell won't degenerate when the tapetum disintegrates prematurely, This proves the hypothesis that the middle layer cells offer nutrients for the tapetum.
绒毡层的提前解体导致不育系花药的中层细胞不退化，为证明中层为绒毡层供给营养的假说提供了证据。
The ubisch bodies which appeared on the inner tangential wall of the tapetum at the time of microspore wall formation are partially remain on the surface of matured pollen grain.
小孢子壁形成时开始在绒毡层内切线壁出现的球状体到花粉粒成熟时仍有一部分附着于花粉粒表面。
The ubisch bodies which appeared on the inner tangential wall of the tapetum at the time of microspore wall formation are partially remain on the surface of matured pollen grain.
小孢子壁形成时开始在绒毡层内切线壁出现的球状体到花粉粒成熟时仍有一部分附着于花粉粒表面。
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