It was showed that the drought resistance among three trees were different , p . orientalis was strongest , then wes p . tabulaeformis , the thi rd was r . pseudoacacia 试验表明，各树种忍耐长期干旱的能力不同，侧柏最强，油松次之，刺槐最差，表明了各树种林分抗旱稳定性的不同。
The variance analysis showed that differences of each drought resistance index among the 13 varieties were extremely significant , then the single factor multiple comparisons between two varieties were calculated 方差分析结果显示， 13个树莓和黑莓品种在每个抗旱性指标上均差均极显著。
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。
To resolve this problem , the effective way was to study the mechanism of drought resistance , clone relative genes and cultivate new species 研究植物的抗旱机理，运用分子生物学的方法克隆抗旱基因，培育耐旱物种是开发利用盐碱地和干旱地的有效途径，获得有自主知识产权的抗旱基因尤为重要。
Applying the method of subordinate function , nine physiological drought resistance indexes of 3 species were measured and a comprehensive evaluation on drought resistance of them was given 摘要对红柳、侧柏、合头草的9个抗旱指标进行了测定，并运用隶属函数值法对三种树种抗旱性进行综合分析。
Therefore it can be conduded that mcsuchun can maintain ( or recover ) normal metabolism and osmotic adjustment ability of apple seedlings under drought condition , and increase drought resistance of the plant 这说明，干旱条件下摩素淳能提高苹果树苗的渗透调节能力，恢复或维持正常代谢水平，提高植物的抗旱性。
The trees with thick cutin layer , high stoma density , thick stockade tissue , high ratio of stockade tissue thickness to sponge tissue thickness , and high sedimentation of leaf tissue structure are of greater drought resistance 叶片厚度、尤其是角质层的厚度和海绵组织厚度是评价供试含笑抗旱性的重要解剖指标。
On the other hand , although these ten tree species had different mechanism of drought stress , they all had higher drought resistance and could suit to drought condition on loess plateau 10个树种在脯氨酸、可溶性糖含量、电导率及水分特性上有差异，其抗旱机制各不相同，但它们都具有较强的抗旱能力，适宜黄土高原干旱的自然条件。
The new advance on study of molecular markers and gene cloning and transgenes of drought resistance and water saving of main crops such as wheat , barley , maize , rice , soybean , was introduced in this paper 摘要介绍了国内外在小麦、大麦、水稻、玉米和大豆等重要农作物的抗旱节水相关基因性状的分子标记和基因克隆及转基因研究的最新进展。
According to the breeding practice , it puts forward the model of wheat yield structure , the characteristics of dry - land varieties and the objectives to breed new varieties with drought resistance , cold resistance , disease - resistance and high quality 结合小麦育种实践，提出小麦产量结构模式，旱地品种特征特性和抗旱、抗寒、抗病、优质育种目标。
