microspore

1. The microspore lacks a large central vacuole.: 小孢子缺中央大液泡。

2. Microspore abortion occurred after the tetrad formation.: 小孢子败育发生在四分体形成以后。

3. 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。

4. Vacuolation of cytoplasm at stage of central nucleus microspore . 20.: 单核中央期小孢子细胞质液泡化。

5. 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；

6. 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。

7. 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；

8. Observation on microspore abortion of 'White angel was made by means of light microscopy.: 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。

9. 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。

10. Rape have established regeneration system of cotyledons, hypocotyls, protoplasts and microspore culture.: 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。

11. All the materials microspore embryoid yield had significant improvement under low temperature pretreatment.: 供试材料经低温预处理，小孢子胚产量均有明显提高。

12. The principle and structure of rice microspore microscopy image collection and analysis system are discussed.: 文章描述了水稻花粉颗粒显微图像采集与分析系统的原理及结构。

13. Phenomenon that cytoplasm of late microspore moved directionally and formed cytoplasm bridge was observed clearly.: 清晰观察到晚期小孢子细胞质定向移动形成细胞质桥现象。

14. The results showed that microspore mother cells and tetrad microspores accumulated numerous lipids but no starches.: 结果发现小孢子母细胞和四分体小孢子中积累了一些脂滴，但没有淀粉。

15. 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。

16. 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。

17. 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。

18. We obtain haploid by isolated microspore culture, and the pure-line is very useful in Purple Flowering Stalks breeding.: 利用游离小孢子培养技术获得单倍体，所获纯合系在育种上有较高利用价值。

19. 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。

20. Tissue culture, such as microspore culture and embryo technique was widely developed in rapeseed breeding and fundamental studies.: 小孢子技术、体细胞原生质体融合技术等组织培养手段已广泛应用于油菜育种及基础性研究。

21. 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。

22. 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。

23. Through ultra-structure observation, it is found that the microspore of Jin A began to abort at the stage of sporogenous cell pision.: 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。

24. 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。

25. 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。

26. 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。

27. This study focus on selection of disease-resistant restorer lines through two approaches of microspore culture and marker assisted selection.: 本研究以小孢子培养和分子标记辅助选择两种途径来选育抗病的恢复系。

28. In recent 20 years with more studies of rapeseed microspore culture a perfect regenerative system of rapeseed microspore culture has been set up.: 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。

29. 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。

30. It is well known that there are twice failings of microspore wall called first and second contraction phases inpidually 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。

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