P. nigra 第1页

Effects of Defoliations on the Chlorophyll Contents and Biomass of the Poplar (Populus simonii×P. nigra) and Larix gmelinii Seedlings Transformation of Chitinase Gene into Populus simonii×P. nigra and Chitinase Activity of Transgenic Plants Error Structure and Additivity of Individual Tree Biomass Model Effects of Pb stress on C, N and P accumulation and allocation in Populus deltoids × P. nigra seedlings In Vitro Germination and Cytology Analysis of Populus simonii×P. nigra Pollen