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31. Ecological and Physiological Research on VA Mycorrhizas of Populus Ussuriensis.

32. On the basis of division of site class, was worked out the table of stem analysis of sample tree of Populus simonii Carr, plantation site class table and classification table of site condition.

33. This Paper reports the vegetative propagation of adult plus-trees of Hopei poplar ( Populus hopeiensis ) by root segment suckering and sucker softwood cutting.

34. Therefore, it has important significance in both theory and practice to research on molecular mechanism of adventitious root development for Populus.sentence dictionary

35. A numerical taxonomy of the genus Populus from northwestern China.

36. From the season variation, the dynamic of salt content of Populus alba L. var. pyramidalis were more influenced by the need of growth than soil salinity.

37. Populus me sibilat, at mihi plaudo Ipse domi simul ac nummos contemplar in arca.

38. In air of the three cities. pollen grains of artemisia L, cannabis and humulus L. pinus L, ulmus L and populus L were the most frequnt among pollen grains investigated of 54 species.

39. The principal pollen sensitizing in ZiBo city was Artemisia, Humulus. Platanus and Populus etc.

40. By determination and theory, actual consumption of Populus simon ii x nigra was analysed and studied.

41. Objective : To obtain the fragment related to rooting gene of mutant Populus tomentosa.

42. The Populus euphratica calli were cultivated to study its salt tolerance , which was compared with Populus tremula.

43. Thus, Phragmitas communis and Populus alba were selected as the best remediation plants.