摘要
为了解樟树遗传变异的来源和规律，进行了樟树苗期种源／家系两水平试验研究。结果表明，樟树的遗传变异存在于种源和家系两个层次。樟树苗高、枝下高、冻害性状在种源层次的变异远大于家系层次的变异，地径则相反。方差分析表明，樟树苗期种源间在苗高、地径、枝下高、冻害性状上有极显著差异；家系之间在苗高、地径、冻害性状上有极显著差异，在枝下高性状上无显著差异，种源内大多数家系间各性状的差异达不到显著水平。苗高、枝下高、冻害各性状值，高于富阳种源（Ｃｋ）的家系分别有１２５、９５、８８、１０８个，低于富阳种源（Ｃｋ）的分别有５６、８６、９３、７３个。苗高与种源纬度显著负相关，与年均温、１月均温、绝对低温显著相关；冻害与纬度极显著负相关，与年均温、１月均温、绝对低温显著相关；枝下高与纬度显著相关，与年均温、１月均温、绝对低温显著负相关；苗高与冻害极显著相关，与地径显著相关。
The research on
provenance/family test of Cinnamomum camphora is carried out at seedling stage in
order to learn the source and law of genetic variation of camphor tree. The result
shows that there is genetic variation on provenance level and family level. The genetic
variation of seedling height,branching heiht,freeze injury value is much greater on
provenance level than that on family level,and the contrary for ground diameter trait on
family level. The variance analysis shows there is extreme significant difference in
seedling height,ground diameter,branching height,freeze injury value among
provenances;there is significant difference in seedling height,ground diameter and freeze
injury value and no significant difference in branching height among families,and there
is no significant difference for many traits among families within provenance. There are
128,95,88,108 families with higher value and 56,86,93,73 families with lower value
compared to Fuyang provenance in seedling height,ground diameter, branching
height,freeze injury. Seedling height has significant negative relationship with latitude
and significant relationship with annual mean temperature,Jan. mean temperature and
extreme lowest temperature; freeze injury value has extreme significant negative
relationship with latitude and significant relationship with annual mean temperature,Jan.
mean temperature and extreme lowest temperature;branching height has significant
relationship with latitude and negative significant relationship with annual mean
temperature,Jan. mean temperature and extreme lowest temperature.Seedling height has
extreme significant relationship with freeze injury value and significant relationship with
ground diameter.
出处
《林业科学研究》
CSCD
北大核心
1999年第3期283-290,共8页
Forest Research
基金
"九五"国家攻关专题
关键词
樟树
苗期生长
种源/家系分析
Cinnamomum camphora
growth at seedling stage
analysis for
provenance/family test
