Analysis on Isozymes of Betula Alnoides Seedlings from Different Provenance
wang qinghua 1; chen yupei 2; wang damin 1; li lianfang 1; chen hongwei 1 feng xian 1; liu yonggang 1; zhou yun 1; meng meng 1 (1 yunnan academy of forestry ; kunming yunnan 650204; china; 2 the research institute of insect resources; caf; kunming yun