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In plants that undergo ALTERNATION OF GENERATIONS, spores are produced by meiosis by the sporophyte generation, so are usually haploid; they germinate to produce the haploid gametophyte generation.

在具有世代交替的植物体中,由孢子体世代进行减数分裂产生孢子,因此多为单倍体。它们将发育为单倍体的配子体世代。

The relationship between gametophyte and sporophate during development is evidently represented by that between pollen and tapetum.

配子体在发育中与相邻孢子体组织间的关系突出地表现在绒毡层与花粉发育的关系上。

In vascular plants, the sporophyte is the dominant generation, while in bryophytes it is parasitic on the gametophyte.

维管植物以孢子体世代为主,而在苔藓植物的孢子体寄生在配子体上。

The spores of Cheilolejeunea ventricosa X.L.He were cultured on MS media (without acid and vitamin, pH=6.2, with 1% agar and 1% sucrose). The sporeling development and oil body ontogeny were observed. After a 55-day-long axenic culture, young plants were obtained successfully. Sodium hypochlorite solution was used to sterilize the capsules. Our results revealed that the sterilizing treatment with 0.1% Sodium hypochlorite solution for a period of 5 seconds was optimal. Oil bodies in primary protonemata are nearly homogeneous, but distinctly compound in the leaf cells of the primary leafy shoots.

首次研究了膨叶唇鳞苔的孢子萌发、原丝体和油体发育及配子体发生的过程,结果表明:(1)使用经过改良的MS培养基(不加氨基酸和维生素,pH值为6.2,琼脂和蔗糖浓度均为1%)能在55 d左右的时间利用孢子培养获得植物体;(2)用0.1%的次氯酸钠溶液,消毒5 s是消毒孢子的最佳方案;(3)油体在孢子萌发初期为均一型,到幼叶发生后,成为可见的聚合型,但聚合的程度比野生材料要弱。

The development of a gametophyte directly from a sporophyte without the occurrence of meiosis or spore formation.

无孢子形成,无孢子生殖,无孢子状态没有经过减数分裂或孢子形成而直接由孢子体进行的配子体发育

In the Filicinophyta, Sphenophyta, and Lyophyta the embryo sporophyte produces a footlike structure that remains embedded in the tissues of the parent gametophyte plant, absorbing nutrients like the suspensor of higher plants.

在真蕨门 filicinophyta ,楔叶门 sphenophyta,和石松门 lycophyta 中,胚胎孢子体产生足状结构,仍然包裹于双亲配子体植物内。胚胎吸收营养的方式同高等植物从胚柄那样吸收营养一样。

Polysaccharides from wild tetraspotophytic and female gametic thalli of Gracilaria lemaneiformis (denoted as TP and FGP respectively) were extracted with hot water and a comparative study was made on their chemical characteristics and structures.

对青岛野生龙须菜四分孢子体和雌配子体中多糖的化学特性和结构进行了比较研究。

The arm repeat-containing 1 (ARC1) and the skp1-cul1-F-box proteins, belonging to the family of E3 Ub ligases, function in both the sporophytic and gametophytic self-incompatible responses, respectively.

自交不亲和反应也正是通过此途径实现的,ARC1(arm repeat containing 1)和SCFs (skp1-cul1-F-box-proteins)作为E3s分别在孢子体自交不亲和和配子体自交不亲和反应中起作用。

Furthermore, HBsAg gene expression was obtained in zygotic sporophytes by using male gametophytes-targeted bombardment.

继而利用雄配子体途径也实现了HBsAg在海带二倍体孢子体中的稳定表达,提示利用海带表达口服乙肝疫苗具有一定可行性。

The fertilization was processed by sperm in mature male gametophyte combining with egg cell on the top of archegonia on June 15 or so.

摘要樟子松发育成熟的雄配子体中的精子6月15日左右在颈卵器中上部与卵细胞结合,进行受精作用,其后,受精卵进行游离核分裂,形成8个子核时,开始形成细胞壁。

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