sporogenous

1. 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。
2. There is only one layer of parietal cells at the stage of sporogenous cell, megaspore mother cell and tetrad.
   造孢细胞，大孢子母细胞和四分体时期，周缘细胞仅1层。
3. The primary sporogenous cells functioned directly as microspore mother cells and were arranged in a single row in a microsporangium.
   初生造孢细胞直接行小孢子母细胞的功能，在小孢子囊中成单列。
4. When sporogenous cells in potato anther produced 3-4 layers they became microsporocytes.
   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。
5. Gynospore sac consisted of epidermis, middle layer, tapetum and sporogenous tissue.
   小孢子囊由表皮、中间层、绒毡层和造孢组织组成。
6. It was found that the callose component initially occurred at late sporogenous cells stage in the cells located in center of microsporangium, and late extended towards the cells lying at its two ends.
   结果发现，黑麦花药中胼胝质的合成最早出现在造孢细胞晚期，并首先在小孢子囊中央的造孢细胞中沉积，随后向小孢子囊两端的细胞扩展。
7. Unhealthy growth and development of sporogenous cells or pollen mother cell.
   造胞细胞或花粉母细胞生长发育不良。
8. The result were as follows: The embryonic development began in the nucellus tissue from a archesporium cell which would divide to a sporogenous cell and a parietal cell.
   结果表明：锥栗胚胎发育始于珠心组织中的一枚孢原细胞。
9. The archesporium is divided into a parietal cell and a sporogenous cell, by the periclinal division.
   孢原细胞进行平周分裂形成一个周缘细胞和一个造孢细胞。
10. On media and under natural conditions, the morphological characteristics and sizes of sporogenous structure, spores et al. were described and surveyed.
    描述和测量了梨锈重寄生菌在自然条件和人工培养基上产孢结构、孢子等的形态特征及大小。
11. The sporogenous cell functioned directly as megaspore mother cell. The tetrad of megaspores was linear in arrangement, and every megaspore might be functional.
    孢原细胞平周分裂形成一个周缘细胞和一个造孢细胞，造孢细胞直接发育成大孢子母细胞，四分体大孢子呈线形排列，它们均可成为功能大孢子；
12. The megaspore mather cell is derived from the sporogenous cell, and divided into four megaspores by the meiotic division, megaspores present the rank of T& type, among which only one near chalaza can be developed to the embryo sac.
    造孢细胞直接发育成大孢子母细胞，它进行减数分裂形成四个呈T&形排列的大孢子，只有合点端的一个大孢子发育成胚囊。
13. A row of microspore mother cells develop directly from the primary sporogenous cells.
    抱原细胞单列.初生造孢细胞不经分裂、直接发育成一纵列的小抱子母细胞。
14. 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。
15. We had found that the auxocyte abortion of Jin A took place at the stage of sporogenous cell division-microspore mother cells formed.
    我们已对晋A细胞质雄性不育系进行了细胞生物学基础方面的研究，研究结果表明：晋A不育系的败育时期主要在造孢细胞增殖&小孢子母细胞形成时期。
16. Seven aspects of abnormal phenomena are as follows: ( 1) The degeneration of sporogenous tissue;
    异常现象有7个方面：（1）造孢组织解体；
17. Primary sporogenous cell forms directly megaspore mother cell.
    初生造孢细胞直接形成大孢子母细胞。
18. During the mitosis of microspore mother cells, the nucleus of tapetum divides into two. The primary sporogenous cells develop into microsporocyte by mitosis. The microsporocyte undergoes simultaneous meiotic division and produces tetrahedral tetrad.
    初生造孢细胞经过有丝分裂，形成次生造孢细胞，然后次生造孢细胞发育成小孢子母细胞，小孢子母细胞经过减数分裂形成四分体，胞质分裂为同时型。
19. The primary sporogenous cells divide into secondary sporogenous cells, and develop to microspore mother cells ultimately.
    初生造孢细胞经过分裂形成次生造孢细胞，最后发育为小孢子母细胞。
20. As the sporogenous cell did not form or degenerated some anthers had no pollen sac at all, some had one.
    有的没有造孢细胞的形成故花药没有药室，有的只有1个药室。
21. The sporogenous cell occurs in late July and develops into the microspore mother cell in early August. In early August, the latter starts its meiosis and enters into its diplotene phase in early October and later goes through dormancy in this form.
    造孢细胞在7月下旬形成，8月上旬形成小孢子母细胞，8月下旬开始减数分裂，于10月上旬进入双线期，并以双线期渡过休眠。

adj

1. producing spores or reproducing by means of spores