| 1. | Observation on meiotic division of pollen mother cell and pollen vigor assessment for four species of ceratoides
驼绒藜属4种植物花粉母细胞减数分裂的观察及花粉活力的测定 |
| 2. | For ceratoides spp . , tr circular response was obvious , and both diurnal and seasonal rhymes were clear , variance among plants was distinct
驼绒藜属植物“环路响应”现象突出，日动态和季节动态清晰，植物间特征明显。 |
| 3. | Drought resistance and photosynthesis of two species of ceratoides under the condition of artificial soil desiccation were studied based on some indexes of water and photosynthesis
摘要用盆栽控水的方法模拟土壤干旱条件，从水分生理和光合作用方面对两种驼绒藜属植物的抗旱生理进行研究。 |
| 4. | Diurnal and seasonal changes in tr of ceratoides spp . displayed typically a single peak . tr was higher and response was more sensitive to environmental factors in ceratoides spp
与霸王( zygophyllumxanthoxylum )和沙拐枣( calligonumrubicundum )相比，驼绒藜属植物及柠条( caraganakorshinski )的蒸腾速率较高、对环境反应较敏感。 |
| 5. | Field and potted trials were adopted . drought adaptive characteristics were tested mainly on dehydration resistance ( dre ) of detached branchs and transpiration rate ( tr ) . a new method called turning point ( tp ) was suggested
试验在呼和浩特进行，以驼绒藜属植物为主要研究对象，采用大田试验和盆栽试验法，主要从离体枝的脱水速率和叶片蒸腾速率两个方面探讨了耐旱性反应或特征。 |
| 6. | The thesis studied on the physiological characteristics of ceratoides l . the contents were composed of the germination characteristics , the resistance of seed and seedling , the nutritive composition , the hormone content , the seed production and the molecular physiology , we studied the deterioration mechanism of seed as well
本论文对驼绒藜属植物种子的生理学特性进行了研究，包括种子的萌发特性、幼苗的耐逆性、种子的营养成分、激素水平、分子生物学以及种子生产技术等内容，同时对种子的劣变机理进行了探讨。 |
| 7. | The proper germinating temperature of ceratoides l seed is the constant temperature of 25 c and variable temperature of 15 - 25 c ; the seed belongs to nonphotosentive one ; the water requirement of germination ranged from 4 . 05 to 6 . 95 times of dry weight , and the minimum requirement existed obvious differences between materials , in which c . arborescens requirement was the lowest ( 4 . 05 time of seed dry weight ) ; the seed quickly absorbed water during germination , the speed generally was 0 . 6 - 0 . 7g / h . g seed and seed imbibtion was saturated after 7 - 8h
驼绒藜属牧草种子萌发最适温度为25的恒温和15 25的变温；属非光敏种子；种子萌发需水量范围为4 . 05 6 . 95倍种子干重，不同材料间种子萌发最低需水量存在明显差异，其中华北驼绒藜萌发需水量最低( 4 . 05倍种子重) ；种子的吸水速率较快，一般为0 . 6 0 . 7g h ? g种子， 7 8h达到饱和吸胀；在相同环境条件下，种子活力表现出种间、生态型间及株龄间的差异，华北驼绒藜各项生理指标均明显高于其它材料。 |
| 8. | It was showed that c . arborescens ecotype wu was generally the most drought tolerant one except lower than c . arborescens ecotype xj which was the maximum in may , bore comparison with zygophyllum xanthoxylum by estimating seasonally ; c . latens ecotype nx was significantlly lower than c . arborescens ecotype wu , the result was contrary to being known ; c . arborescens ecotype kerqin was significantlly lower than wu ; xj , the maximum in may , showed no else great difference to nx ; c . lanata was high in april and not high afterwards , however its phenological phase presented visible changes as compared with the original life patterns in western america
Arborescensecotypexj ) 5月耐旱性表现最强，其他时间与宁夏驼绒藜差别不大；北美驼绒藜( c lanata ) 4月拐点很高， 4月以后耐旱性降低，其物候期与原分布区(美国西部)相比发生了很大变化。驼绒藜属植物在不同季节中蒸腾速率的日变化基本上都为典型的单峰曲线。 |
| 9. | The result of cluster analysis showed that the materials with fewer morpholo - gical difference and nearer geographical distribution had nearer relationship . this result was in keeping with the result of morphology on the whole and could provided molecular basis for the systematic study of ceratoides . l plants . the deterioration of seed was due to two reasons
植物材料间rapd变异大，遗传多样性丰富，聚类分析结果表明，形态差异较小，地理分布区域较近的材料亲缘关系较近，其结果与形态学的研究结果基本一致，可为驼绒藜属植物的系统研究提供分子水平上的依据。 |
| 10. | They have great potentialities to ecological restoration and high value to being used as forage . however researches on their physiological characteristics related to drought adaptabilities were not sufficient , yet . therefore , it is necessary to reveal more properties in order to increase efficiency in the ecological practice and to promote using in pasturage
驼绒藜属( ceratoides )植物为干旱、半干旱地区具有重要生态价值和饲用价值的旱生半灌木资源，对该属植物适应干旱生理特性的研究尚不充分，加深研究有助于提高对它们的利用效率和应用价值。 |
