花粉囊

Secondly, according to the stem and leaf anatomy, leaf epidermis, pollen morphology and floral development, it is found that there are no close relations between Acorus and Typhales, especially in the aspect of floral development. In the course of floral development of A. calamus, neither bracteloe primordium nor common primordium occurs in the whole course. Early development of the flower is strongly unidirectional. Three shield carpels develop into a pistil. In Sparganium fallax, each female flower has a bracteole. The bracteole primordium and the floral primordium originate from a complex structure. A single saccate carpel develops into a pistil. In staminate flowers, petal and stamen primordia initiate spirally.

菖蒲属与香蒲目的茎叶解剖特征、叶表皮特征、花粉特征及花器官发生特点等亦存在着明显区别，特别是花器官发生特点差异尤为显著，如菖蒲属花器官发生过程中，没有苞片原基，也不存在任何形式的复合原基，花被与雄蕊原基均以单向性方式发生，雌蕊由3心皮发育而成，具有"盾状心皮"的特点等，黑三棱属则有苞片原基发生，且苞片原基与雌花原基起源于共同的复合结构，雄花的花被原基和雄蕊原基均以螺旋状方式发生，雌蕊由单心皮发育而成，未发现有2或3个心皮原基或其痕迹的现象，体现出"囊状心皮"的特点。

The pollen and embryo sac fertility were controlled by two sets of different genes, and both of them made contributions to F〓 spikelet fertility.

花粉育性和胚囊育性分别出不同的遗传基因控制，两者共同决定小穗育性的高低。

It was a creative research method that by means of the culture in vitro of unfertilized ovary of strawberry to induce the gynogenesis and obtain the gynogenic plants with half number chromosomes.

首次对草莓未受精子房进行了离体培养，诱导了雌核发育，并获得了染色体数减半的胚囊植株。这是继草莓花粉植物后，开辟的获得草莓单倍体植株的又一条途径。

This article used the convention paraffin section the method is the mature embryo sac and the pollen grain structure has carried on the observation to the corn inbred line.

毕业论文摘要翻译，英语高手们帮帮忙啊本文利用常规石蜡切片的方法对玉米自交系成熟胚囊和花粉粒的结构进行了观察。

Napus ; pollen germination ; embryo sac development ; genome introgression ; genetic distance

甘蓝型油菜；花粉萌发；胚囊发育；基因组导入；遗传距离

The factors affecting the seed-set rate ofintersubspecific hybrids include embryo sac sterility,pollen sterility,anther dehiscence and non-synchronization of male and female sexual organsdevelopment in the same spikelet.

对水稻亚种间杂种及其稳定的多胚品系SB-1进行了细胞学、胚胎学和遗传学研究，主要结果如下：1、影响杂种低结实率的因素包括胚囊败育、花粉败育、花药不开裂和雌雄性器官发育进程不一致。

Leaves spirally arranged, spreading radially, or directed forward on upper side of branchlets and spreading on lower side, each inserted on a petiolelike pulvinus, linear, straight or curved, quadrangular, broadly rhombic, or flattened in cross section, stomatal lines adaxial or on each surface, vascular bundle 1, resin canals 2, sometimes small and discontinuous. Pollen cones solitary in leaf axils, rarely terminal, ellipsoid or cylindric; pollen 2-saccate.

螺旋状排列，平展的叶光线，或在小枝和平展在下部边的上面边上向前指导，每着生于一叶柄状叶枕，线形，直或弯曲，四棱，宽棱形，或扁平的在横断面上，在叶腋，很少顶生，椭圆形的或圆筒状里的雄球花单生；花粉2囊。

Microspore Ye as the feather, small sporophyll sac formed by the polymerization, each polymer capsules formed by four small sporangia, small spores with dual airbags, and airbag Pinaceae pollen is similar to large sporophyll from the central axis and arranged in Brachypodium feather composition, Each Yibing has a shell bucket, each bucket containing shell upright ovules 10-12 months.

小孢子叶枝为羽状，小孢子叶由聚合囊组成，每个聚合囊由4个小孢子囊组成，小孢子具双气囊，与松科植物花粉的气囊相似，大孢子叶由中轴及羽状排列的短柄组成，每一柄上有一个壳斗，每个壳斗内有10—12个直立的胚珠。

The paper summarizes studies of in vitro inducement of haploids in cucurbitaceae, including anther culture, in vitro gynogenesis culture and induction of haploid obtained by irradiated pollen. The factors affectting in vitro inducement such as material genetype, medium, pretreatment, megaspores development stage and others had significant effects on the embryoids inductivities.

重点对葫芦科植物离体诱导单倍体的研究进行综述，包括花药培养、离体雌核培养、辐射花粉诱导单倍体培养等在育种中的应用，以及供体基因型、培养基、预处理方式、胚囊发育时期等因素对离体诱导再生频率的影响。

Leaves spirally arranged, radially spreading, or pectinately arranged in lateral sets, linear, straight or curved, flattened, grooved adaxially, stomatal bands 2, abaxial, vascular bundle 1, resin canals 2(-10 outside China), marginal or median, rarely submedian, base twisted. Pollen cones borne in leaf axils of previous year's branchlets, pendulous, narrowly ellipsoid or oblong when young, finally cylindric; pollen 2-saccate.

叶螺旋状排列，光线传播，或pectinately排列在方面侧确定，线形，直或弯曲，扁平，正面具槽，气孔带2，背面，维管束1，雄球花生于第二年小枝的叶腋，下垂，或长圆形的狭椭圆形幼时，最后圆筒状；花粉2囊。

What are your goals and strategies for growth?

你的成长目标和策略是什么？

And unto the angel of the church in Sardis write; These things saith he that hath the seven irits of God, and the seven star I know thy works, that thou hast a name that thou livest, and art dead.

3：1 你要写信给撒狄教会的使者，说，那有神的七灵和七星的，说，我知道你的行为，按名你是活的，其实是死的。