美国湿地松三代种子园半同胞家系苗期生长表现

摘要

Seedling height and basal diameter of half-sib families of Pinus elliottii were studied whose seeds were impor-ted from United States.The results showed that,there were significant differences in seeding height and basal diameter a-mong half-sib families of Pinus elliottii.According to Duncan’s contrast,S9,S8,S5,S25,S16,S3,S7,S22 were selected for the optimal.There were obvious advantages in seedling growth of Pinus elliottii which were imported from U-nited States.%对美国湿地松三代种子园半同胞家系种子开展育苗试验，测定其苗高和地径生长，结果表明：湿地松半同胞间苗高与地径生长均存在显著差异。结合苗高与地径生长表现，通过 Duncan 法筛选出湿地松半同胞家系 S9、S8、S5、S25、S16、S3、S7、S22为苗期生长性状优良的家系，从美国引进的湿地松家系苗期生长优势明显。