摘要
对４７个火炬松自由授粉家系进行了苗期和幼林测定。结果表明，家系间苗木保存率与苗高均差异显著，保存率与苗高呈正相关，但与幼树高生长不相关。家系间树高生长差异显著，有１／５以上明显优良。此外，还研究了统计分析方法与比较标准对选择效果的影响，以及苗期低强度淘汰的有效性。
An investigation was made on the seedling and juvenile stage of 47 open-polli-nation
families in Pinus taeda L.. The results show that the variance of preservation percentand height
of seedling between the families are significant. The perservation percent is corre-lated with
seedling height, but the seedling height growth is not correlated with saplingheight growth.The
differences of height growth between families are significant.There isover 1/5 of the 47 families
superior in height growth.In addition,the influence of statisticanalysis method and selection
critirion on selection effect were studied,effectiveness of elimi-nation of inferior seedlings was
also investigated.
出处
《林业科学研究》
CSCD
北大核心
1994年第3期277-285,共9页
Forest Research
基金
"七五"国家重点科技攻关课题
关键词
火炬松
子代测定
授粉
Pinus taeda,half-sib progeny test,juvenile-mature correlation,early
se-lection,genetic gain
