摘要
调查了广西覃塘林场马尾松无性系种子园的花期和花量，着重探讨花期和花量对种子生产与子代群体遗传结构的影响。结果认为：无性系间和分株间的花期并不完全一致，但存在一定程度的同步性。进入正常结实期的种子园存在“花粉相对不足”问题。少数几个无性系的雄球花或雌球花在园内占主导地位，使种子园种子的遗传基础面临变窄的问题。
Results of investigation about
reproductive phenology and number of strobili(including male:and female ones)of clones in a
grafted seed orch-ard of masson pine were reported. Discussion emphasized the effects of
rep-rodnctive phenology and the strobili number on seed production and genetic composition of
filial gencrations. Conclusions are as follows:a) Although reproductive phenologies among
clones and among ramets of the same clone did not synchronize completely , they did
synchronize toacertain degree;b )There was still a “comparative lack of pollen” for seed
orchards in productiop-period,c)The dsminance of male or female strobili of a few clone in
seed orchards made it possible for genetic base of seed orchards,seeds to become narrower.
出处
《浙江林学院学报》
CSCD
1996年第4期405-411,共7页
Journal of Zhejiang Forestry College
基金
江苏省自然科学基金
关键词
马尾松
种子园
开花期
杂交后代
种子
Pinus massoniana
seed orchard
blooming period
filial generations
seeds
