microspore
Abort microspore in crescent or irregular shape.26.
月牙形和不规则形的败育小孢子。
The formation of microspore in Allium fistulosum L.
小孢子的形成。
The microspore lacks a large central vacuole.
小孢子缺中央大液泡。
Meiosis of microspore mother cells is synchronous or unsynchronous.
小孢子母细胞减数分裂同步或不同步。
Studies on The Isolated Microspore Culture of Brassica napus L.
甘蓝型油菜游离小孢子培养技术研究。
Ultrastructure of Microspore Development in Jatropha curcas L.
麻疯树小孢子发育的超微结构研究。
Cytoplasm of monocytic microspore were decompounded.
染色浅、细胞质被降解成空壳的单核期小孢子因缺乏营养物质而败育。
The sporogenous cell develops into microspore mother cell.
造孢细胞直接发育成小孢子母细胞。
Isolated Microspore culture is one of the methods to obtain haploid.
摘要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。
The two sperm nuclei and the tube nucleus are all derived from a single microspore nucleus by mitosis.
两个精核和管核都是从同一个小孢子核有丝分裂产生的。
Genetic Analysis of in vitro Microspore Embryogenesis in Brassica napus L.
甘蓝型油菜离体小孢子胚胎发生能力的遗传分析。
During the late microspore stage, a big vacuole formed and the nucleus was forced to move to peripheral region.
当小孢子被释放出后，钙颗粒开始特异性积累在正在形成的花粉外壁中，尤其在萌发孔的部位聚集了大量的钙颗粒。
Successive cytokinesis in the microspore mother cells (MMCs) follows meiosis.
小孢子母细胞减数分裂的胞质分裂为连续型。
Crescent or irregular shape of microspore at stage of central nucleus. 24.
23.单核中央期小孢子呈月牙形和不规则形状。
Complete disintegration of cytoplasm at stage of vacuolated microspore.
单核液泡期的小孢子细胞质完全解体。
The monokaryotic microspore had a big nucleus and abundant organelles.
单核小孢子时期，细胞核大，细胞器丰富。
At the microspore stage, the spathe unfolded and the stigma was unvisibale.
二胞花粉期，柱头伸出，小花呈暗紫红色。
The nucleus in shrinking cytoplasm of microspore mother cell enters into diakinesis stage.16.
收缩的小孢子母细胞中核进入减数分裂终变期。
The nucleus in shrinking cytoplasm of microspore mother cell enters into telophase.17.
收缩的小孢子母细胞质中核进入减数分裂末期。
Factors Influencing Microspore Embrogenesis and Construction of Dihaploid Population in Yellow-seeded Brassica napus L.
油菜小孢子培养影响因素及黄籽油菜双单倍体群体的构建。
Studies on enhancing of embryogenic rates in microspore culture of Brassica napus L.
提高甘蓝型油菜游离小孢子产胚率的研究。
Embryogenesis via Isolated Microspore Culture of Brassica campestris. Ssp. Chinensis L.
小白菜小孢子培养胚状体的诱导。
The genesis of microspore and the formation of male gametophyte in Swertia davidii Franch.
川东獐牙菜小孢子发生和雄配子体形成。
Effects of Addition of Activated Charcoal on Microspore Embryogenesis in Brassica napus L.
小孢子胚胎发生的影响。
Effects of Low Temperature Pretreatment on Isolated Microspore Embryogenesis in Brassica napus L.
低温预处理对甘蓝型油菜小孢子胚胎发生的影响。
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。
Cytokinesis is of the simultaneous type and microspore tetrads are mainly tetrahedral.
小孢子母细胞减数分裂为同时型，四分体的排列方式为四面体形；
The cytokinesis of the microspore mother cells in meiosis is successive and the microspore tetrads are tetrahedial.
小孢子母细胞减数分裂中的胞质分裂为连续型，四分孢子为四面体型；
In theterosporous species, a distinction is usually made between megaspore mother cells and microspore mother cells.
在异型孢子体种类中，可区分为大孢子母细胞和小孢子母细胞。
Microspore mother cells in an anther started but di d not end the meiosis at the same time.
小孢子母细胞减数分裂同时开始，但不同时结束，分裂过程高度不同步。
ABA was observed to distribute in cytoplasmic matrix and small vacuoles of microspore mother cell.
短日照条件下，花粉母细胞细胞质基质及小液泡内有金颗粒分布；
The big,empty and abortive pollen grains are abserred at the stage of uninuclear microspore.
单核期的小孢子出现壁发育不良和巨大及空花粉现象。
The cytokinesis of microspore mother cell in meiosis is simuteneous,and the tetrad are tetrahedral.
四分体胞质分裂为同时型。
Cytokinesis in microspore mother cells is simultaneous, forming tetrahedral tetrads.
小孢子母细胞的分裂属于同时型，产生四面体排列的小孢子。
The microspore culture technology has been widely applied in Brassica species nowadays.
随着芸苔属作物小孢子培养技术的日趋成熟,应用范围也越来越广泛。
The nucleus in shrinking cytoplasm of microspore mother cell enters into telophase. 17.
16.收缩的小孢子母细胞质中核进入减数分裂末期。
Micronucleus and a lot of abnormal cells can be observed at dyad, tetrad and microspore.
二分体、四分体和小孢子时期，细胞内普遍观察到微核，且出现大量异形细胞。
The other phenomenon was that the tapetum degenerated early, the microspore degenerated and disappeared.
花药发育后期，则观察到绒毡层细胞液泡化并径向膨大，充满整个药室；
At anaphase of mitosis, the organelles in microspore cytoplasm are concentrated in the future vegetative cell pole.
有丝分裂后期，细胞器集中于未来的营养细胞极。
Low temperature and mannitol pretreatment favor the maintaining of microspore activity.
低温和甘露醇预处理都有利于保持小孢子的活力。
The number of ribosome in cytoplasm of microspore mother cells decreased gradually during meiosis.
二分体时期，质体和线粒体形态结构基本恢复正常。
The cytokinesis of the microspore mother cells in meiosis is the simultaneous type.
小孢子母细胞减数分裂为同时型。
At present ，rape have established regeneration of cotyledons， hypocotyls， stems，protoplasts and microspore culture.
目前油菜已建立了子叶、下胚轴、茎段、原生质体培养、小孢子培养的再生体系；
Aim The development of megasporogenesis and microspore of morphological bisexual flowers of S.
大孢子母细胞减数分裂产生T形四分体和少数线形四分体。
It was found that callose appears in microsporangium at the microspore mother cell formation stage.
随后胼胝质在小孢子母细胞中央开始沉积，并向四周扩展形成第1个赤道板，随后形成第2个赤道板；
The fertility and tetrasporic micronucleus of microspore were observed too.They are 48%and 23.6%respectively.
同时观察了韭菜的育性和小孢子四分体微核情况，育性和四分体微核率分别为48%、23.6%。
After microspore mitosis, calcium precipitates appeared in the big vacuole of 2-cellular pollen, and then the vacuole disappeared.
在小孢子分裂形成二胞花粉后，在二胞花粉的大液泡中又特异性地出现许多细小钙颗粒。
These abnormal mitochondria and vacuoles may be associated with the death of microspore mother cell which leads to the male sterility in cotton.
线粒体和液泡结构异常可能是小孢子母细胞死亡造成雄性不育的细胞形态学特征。
Microspore embryogenesis from two autumn cauliflower genotypes was induced by anther float cultures on a modified B5 liquid medium.
通过花药漂浮培养,成功地诱导两个秋花椰菜基因型的小孢子胚胎发生.
The endothecium and epidermis persist.Cytokinesis in the microsporocyte meiosis is simultaneous type and the microspore teads are tetrahedral.
药室内壁纤维状加厚,药壁表皮宿存.小孢子母细胞减数分裂为同时型;