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- In this study, 21 elite poplar varieties of Tacamahaca and Aigeiros were fingerprinted using AFLP markers. 本试验采用AFLP对来自青杨组和黑杨组的21个重要杨树品种（无性系）的鉴定与遗传相关性进行了研究。
- Using cuttage was conducted the study on drought resistanceindications and physiologic reaction of 6 poplar varieties in leaf water,net photosynthate,transpiration rate. 利用扦插苗对6个杨树品种进行抗旱指标与叶片水分、净光合产物、蒸腾速率等生理反应研究。
- A direct relationship between the resistance of poplar varieties to poplars canker and the increase of respiratory rate as well as the increase of HMP pathway was found. 结果表明,呼吸强度的升高以及HMP途径的增强与品种抗病性有密切关系。
- poplar varieties which were introduced from USA 北美杨
- Study on Rapid Propagation Technologies of Uneasy Root-Striking Poplar Varieties of the Section Leuche 白杨派难生根树种快速繁殖技术研究
- A botanist can differentiate varieties of plants. 植物学家能区分各种不同的植物。
- A poplar tree, especially a cottonwood. 三角叶杨一种杨树，尤指三角叶杨
- The grocer's has plenty varieties of goods in stock. 杂货商有种类繁多的存货。
- I eulogize the tall and straight trunk of the white poplar. 我赞美白杨树那挺拔的树干。
- Can you differentiate between the two varieties? 你能辨别这两个品种吗?
- After a while, we find a shady place under some poplar trees. 过了一会儿，我们在一些白杨树下面找到了一个遮阴的地方。
- The poplar leaves rustled in the wind. 杨树叶子被风吹得刷刷响。
- poplar varieties 杨树
- Bring up in town, the boy find it difficult to separate a poplar from a willow. 那男孩是在城里长大的，所以觉得很难区别杨树和柳树。
- The leaves of the poplar trees rustled in the wind. 风吹着白杨树叶沙沙地响。
- Crows cawed from the poplar trees overhead. 白杨树上的乌鸦在上空呱呱乱叫。
- All varieties of goods for daily use are available. 日用百货一应俱全。
- Breeding of Poplar in Agricultural Division No. 兵团农七师胡杨壮苗的培育。
- They may endure as varieties for very long periods. 在极长时期内停留在变种阶段。
- Pure yellow poplar leaves as students in ANU. 纯黄色的杨树叶,如同校园里的学生一样单纯。
