然而由于缺乏可重复、高效率研究雄性配子发生的体外培养体系，生殖细胞发生、发育机制研究进展缓慢。
However, for lack of an efficient and reproducible model, the mechanism of male germ development is not yet clear.
孢子体：为苔藓和地钱的孢子体世代具有。由受精卵发育而来，包括基足、柄和孢蒴。孢子体是寄生在配子体上的。
Sporogonium the sporophyte generation in mosses and liverworts. it develops from the zygote and comprises the foot, seta, and capsule. the sporogonium is parasitic on the gametophyte generation.
胚珠发育和雌配子体形成过程中遗传控制分子机理研究的材料主要来源于对突变体的发现和诱导。
The material for studies on molecular mechanism of genetic regulation in the course of ovule development and gametophytes forming were mainly from the finding and inducement of mutation.
该文从雌配子体发育、胚珠发育及珠被发育等几个方面综述了近年来植物雌配子体发育的分子调控机制研究进展。
Studies on molecular regulation of female gametophyte development were reviewed in terms of female gametophyte and ovule and integument development.
漂浮浒苔的游孢子、配子或配子结合形成的合子均能发育成一株新的藻体。
The spores and gametes could grow to new thalli independently, and the same to motile zygotes.
利用石蜡切片技术观察了埃及白睡莲的大、小孢子的发生，雌、雄配子体的发育，受精作用以及胚和胚乳的发育。
The megasporogenesis, microsporogenesis, female and male gametophyte development, development of embryo and endosperm were observed by using paraffin wax.
观察了大麦雌雄性配子的融合过程及其幼胚的早期发育。
The process of fertilization and early embryogenesis in barley was observed.
沙田柚雌雄配子体发育进程有明显差异，小孢子与雄配子体发生较早，持续时间较长；
There is an obvious difference in the developing process of female and male gametophyte.
不同基质上中国蕨配子体和幼孢子体生长发育存在差异，尤其是心形原叶体的形态差别明显；
The gametophyte and infant sporophyte morphological development of S. grevilleoides represented very different features on different culture substrata.
减数分裂过程中染色体行为异常的花粉母细胞约占10.28%；雄配子体发育过程中异常频率约为3.2%，败育主要发生在单核期。
In meiosis, the pollen mother cells that abnormally acted made up about 10.28% and the male gametophytes abnormally acted at a frequency of 3.2% and mainly aborted at uninucleate stage.
探究雌配子体发育的基因调控表达机制对于揭示植物发育分子机制有重要意义。
Explore the female gametophyte development in the expression of gene regulation mechanism development is important for revealing the molecular mechanism of plant.
该不育系具有稳定的遗传特性，是研究木本植物雌配子体发育调控机制的极好材料。
It is an excellent material for mechanism research on the female gametophyte development of woody plants with its steady genetic characteristic of female sterility.
在凹叶厚朴大、小孢子发生和雌、雄配子体发育过程中存在部分败育现象。
The megasporogenesis and microsporogenesis and the development of their female and male gametophyte are partially abnormal.
联系红花木莲花粉粒数目和胚珠数目进行探讨，认为雄配子体发育不是影响红花木莲结籽率低的主要因素。
The process of male gamete formation was not considered as an important factor responsible for the low seeding rate.
联系红花木莲花粉粒数目和胚珠数目进行探讨，认为雄配子体发育不是影响红花木莲结籽率低的主要因素。
The process of male gamete formation was not considered as an important factor responsible for the low seeding rate.
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