作者单位: | [1]Hort Science Group, Institute of Natural Resources (INR 433), Massey University, Palmerston North, New Zealand [2]Instituto Nacional de Investigaciones Forestales, Agricolas y Pecurias, Campo Experimental Calera, Aportado Postal No. 18, Calera de V.R. Zacatecas, 98500 Mexico, Mexico |