P.bolleana 第1页

Effects of Trichoderma asperellum on the Physical and Chemical Properties and Nutrient Components of the Pot Coil Culturing Tissue-cultured Populus davidiana×P.bolleana Seedlings Rooting and Transplanting Method of Populus davidiana×P.bolleana Tissue Culture Seedlings STUDY ON THE EFFECTIVE TREATING PERIOD FOR POLLEN CHROMOSOME　DOUBLING OF POPULUS TOMENTOSA×P.BOLLEANA