The microspore lacks a large central vacuole.
小孢子缺中央大液泡。
The endogenous hormonal ratio was interdependent to the microspore abortion of radish.
可见，萝卜小孢子的败育与内源激素平衡的破坏有关。
The tapetal cells degenerated at microspore stage and its cytoplasm transform into lipids for the microspore absorbing.
最内层的绒毡层细胞在小孢子时期开始解体，细胞质转变为脂滴，供花粉吸收。
Observation was made on the cell morphology of the microspore development of the sterile and fertile plants in the Aibai wheat.
对矮败小麦中的可育株和不育株进行了小孢子发育过程的细胞形态学观察。
Through ultra-structure observation, it is found that the microspore of Jin A began to abort at the stage of sporogenous cell division.
小孢子发育的超微结构观察发现，晋A不育系在造孢细胞增殖时期即表现出败育迹象。
When the calyx is encased by petal, the calyx is longer than the petal, and the anther is greenish white, most of the microspore is at the earlynucleate stage.
当花萼包住花瓣、萼长于瓣、花药白绿色时，多数小孢子处于四分体时期或单核早期；
In the process of litchi flower differentiation, the microspore abortion induced by external ethylene starts from the transition period (from sporogenous cells to microsporocytes).
花分化过程中，外源乙烯诱导小孢子败育起始于造孢细胞至小孢子母细胞时期。
The pretreatment with low temperature was beneficial to maintaining microspore vitality.
低温预处理有利于保持小孢子的活力；
The effects of colchicine on in vitro microspore embryogenesis of Brassica napus were investigated using 23 genotypes.
研究了秋水仙碱不同浓度和处理时间对甘蓝型油菜23个基因型离体小孢子胚胎发生的影响。
Microspore abortion occurred after the tetrad formation.
小孢子败育发生在四分体形成以后。
It is not synchronous highly that the meiosis of pollen mother cells and the development of microspore in the same anther but different pollen sac and in the same anther chamber.
同一花药不同花粉囊相同一药室，花粉母细胞减数分裂和小孢子的发育，并不是高度同步的。
The results are as follows: The genotype affect plantlet regeneration of microspore embryoids;
结果表明：基因型影响着小孢子胚状体的再生苗形成；
The best development period for microspore culture is monokaryotic stage;
小孢子离体培养的最佳发育时期是单核期；
When microspore mother cell preparing meiosis, abundant calcium precipitates appeared in cytoplasm of tapetal cells and microspore mother cells, and in callus wall surrounding the cells.
当花粉母细胞进行减数分裂时，花药绒毡层细胞和花粉母细胞中出现了许多的细小钙颗粒。
Isolated Microspore culture is one of the methods to obtain haploid.
游离小孢子培养技术是获得大白菜单倍体植株的有效途径之一。
Also, the progresses in researches of barley microspore culture, cell suspension culture, protoplast culture and protoplast fusion are briefly introduced in this paper.
并对大麦小孢子培养，细胞悬浮培养，原生质体培养和原生质体融合研究的最新进展作了简要介绍。
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。
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。
Therefore the behavior of vacuome may be the earliest morphological index for microspore abortion.
液泡系的行为，可能可以作为小孢子败育的最早的形态上的标志。
The procedure of isolated microspore culture with higher regeneration was established by the technique optimization and the platform of maize DH breeding was developed.
通过技术优化，建立玉米小孢子离体培养高频再生技术程序，在此基础上构建了玉米dh育种技术平台。
It is well known that there are twice failings of microspore wall called first and second contraction phases individually in the rice microspore development.
水稻的小孢子发育，通常都能看到有二次孢壁下陷过程，称之为第一和第二收缩期。
Otherwise, the chromosome morphology involving Haynaldia chromatin was observed at preleptotene I, and the frequencies of chromatin nucleus at tetrad stage and at microspore stage were investigated.
此外，观察了前期I的簇毛麦染色体形态，统计了四分体和小孢子中小麦和簇毛麦染色质微核频率。
Improving microspores embryogenic ability and plantlet regeneration ability from microspore-derived embryos is the key of isolated microspores culture technique.
胚胎发生能力和再生植株转化率是游离小孢子培养技术的关键问题。
The effect isn't notable on embryoid induction for "Y009", but it can keep materials fresh for isolated microspore culture temporarily.
该影响在“Y009”上表现不显著，但可以暂时保存材料而不降低培养效果。
Microspore development showed correlativity with the morphological characteristics of buds, and the color of anthers.
孢子发育时期与花蕾形态特征、花药颜色具有相关性。
It is of great interrelation between cytology growing period of strawberry's microspore and the outside shape and size of flower organ.
草莓小孢子细胞学发育时期与花器外部形态、大小密切相关。
At the late stage of microspore formation, microtubule bundles became thinner and reticulately oriented to form a tightly knitted network.
当小孢子发育至成熟期，细胞内的微管束变得纤细，而网络则变得紧密。
The efficiency of regeneration of pollen plants with the pollen embryo inducement in pollen culture is higher greatly than that of isolated microspore culture.
花药培养的花粉胚植株再生率要明显高于游离小孢子培养。
The yield of microspore-derived embryoids (No. of embryoids per 100 anthers)varied from 0.11% to 17.62% among varieties.
各品种间小孢子胚产量差别较大，每100枚花药产胚数（诱导率）在0.11%-17.62%之间。
The amount of pollen plants regeneration from a bud in the isolated microspore culture is higher slightly than that in pollen culture.
而每花蕾成苗数则游离小孢子培养略高于花药培养。
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