在陆地棉小孢子发生过程中，相邻的减数分裂细胞壁中的细胞质通道是一个明显的特征。
The cytoplasmic channel in the wall of adjacent meiocytes was an obvious feature during microsporogenesis in Gossypium hirsutum.
小孢子败育发生在四分体形成以后。
相邻小孢子母细胞之间有胞质通道。
There are some cytoplasmicchannels present between adjacent microsporocytes.
低温预处理有利于保持小孢子的活力；
The pretreatment with low temperature was beneficial to maintaining microspore vitality.
小孢子再生植株成活率可达74.6%。
小孢子缺中央大液泡。
绒毡层细胞仲入小孢子母细胞之间形成“小梁”。
The tapetal cells invest in the sporogenous tissue and form "the Balken".
可见，萝卜小孢子的败育与内源激素平衡的破坏有关。
The endogenous hormonal ratio was interdependent to the microspore abortion of radish.
当小孢子从四分体中释放出来，特殊类型的外壁已经形成。
An extine with its specific pattern had already been formed, when microspores were released from tetrads.
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。
It is of great interrelation between cytology growing period of strawberry's microspore and the outside shape and size of flower organ.
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。
Isolated Microspore culture is one of the methods to obtain haploid.
最初，这些斑点周围先有晕环，是由成千上万的小孢子组成的。
Initially, these spots have colored halos around them, which are made of thousands of tiny spores.
油菜雄性核不育系及其等位可育系小孢子发育过程的比较研究。
Microsporogenesis Comparison of Genetic Male Sterility Line and Its Allele Fertile Line in Brassica napus l.
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。
Therefore the behavior of vacuome may be the earliest morphological index for microspore abortion.
油菜已经建立了子叶、胚轴、原生质体及小孢子培养的再生体系。
Rape have established regeneration system of cotyledons, hypocotyls, protoplasts and microspore culture.
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。
Improving microspores embryogenic ability and plantlet regeneration ability from microspore-derived embryos is the key of isolated microspores culture technique.
较干燥的培养基更利于小孢子胚成苗，最适的琼脂含量是1.2%。
Dry culture medium was favor of regenerating plantlet, optimum AGAR content was 1.2%.
小孢子发育过程涉及花药发育到花粉粒成熟过程中一系列基因的表达。
The expressions of a series of genes are involved in the anther and pollen development.
对王百合雄性不育突变体‘白天使’小孢子败育的过程进行了显微观察。
Observation on microspore abortion of 'White angel was made by means of light microscopy.
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。
At the late stage of microspore formation, microtubule bundles became thinner and reticulately oriented to form a tightly knitted network.
马铃薯花药中的造孢细胞产生3 ~4层时，进而变成小孢子母细胞。
When sporogenous cells in potato anther produced 3-4 layers they became microsporocytes.
认为高浓度的蔗糖葡萄糖以及葡萄糖与果糖混合糖源对小孢子有毒害作用。
It was concluded that high concentration of sucrose, glucose and fructose was toxic to the microspores.
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。
Observation was made on the cell morphology of the microspore development of the sterile and fertile plants in the Aibai wheat.
由此说明，基因型对秋水仙碱处理离体小孢子诱导染色体加倍的反应不同。
This indicated that different response existed in some distinct genotypes to chromosome doubling through treating in vitro microspores with colchicine.
结果表明，几种不育类型小孢子均表现核物质的降解，只是降解的时期不同。
The result indicated that the microspores of all types of male sterile maize displayed degradation of nuclear matters, just the time was different.
小孢子四分体为四面体型排列，成熟花粉有2 -细胞和3 -细胞型2种。
The microspores are arranged in a tetrahedral tetrad. The mature pollen grains are of the 2-celled and 3-celled types.
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。
It is well known that there are twice failings of microspore wall called first and second contraction phases individually in the rice microspore development.
在次生造孢细胞、花粉母细胞和小孢子后期都有液泡数量明显增加或体积增大的过程。
At the late stage of the sporogenous cells, mother pollen cells and microspores, the vacuoles remarkably increased in quantity or size.
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。
Through ultra-structure observation, it is found that the microspore of Jin A began to abort at the stage of sporogenous cell division.
近20年，油菜小孢子培养已得到深入的研究，并建立了完善的油菜小孢子再生体系。
In recent 20 years with more studies of rapeseed microspore culture a perfect regenerative system of rapeseed microspore culture has been set up.
应用推荐