摘要
在人工气候室中测定了长白落叶松 9个无性系的多个光合性能和氮素代谢指标。结果表明 ,长白落叶松不同无性系间各指标变异较大 ,且与生长性状密切相关。生长快的无性系净光合速率、呼吸速率、真正光合速率、最大净光合速率、光饱和点一半光强时的净光合速率、净光合速率的光响应强度、硝酸还原酶活力、叶绿素含量、氨态氮及总氮含量均高 ,生长慢的无性系各指标均低。回归分析表明 ,净光合速率、最大净光合速率等与生长的相关系数较高 ,呼吸速率、叶绿素含量与生长的相关系数较低。以 6个光合性能指标为变量系统聚类结果与以 6个生长性状为变量的分类结果基本一致 ,把长白落叶松 9个无性系分成好、中、差 3类。研究表明 ,上述指标均与长白落叶松生长呈正相关 。
Many photosynthetic property indices and nitrogen metabolic indices of 9 clones of \%Larix olgensis\% Henry were measured in phototron. The results showed that the indices varied greatly among 9 clones of \%Larix olgensis \%Henry, and correlated with growth character closely. Net photosynthetic rate, respiration rate, true photosynthetic rate, maximum net photosynthetic rate, net photosynthetic rate at half of light saturation point, light response intensity of net photosynthetic rate, nitrate reductase activity, chlorophyll content, amino nitrogen and total nitrogen content were higher in clones growing fast than those in clones growing slowly. Correlation analysis showed that correlation coefficient between net photosynthetic rate or maximum net photosynthetic rate and growth character were higher, and those between respiration rate or chlorophyll content and growth character were lower. The results of system clustering analysis for indices of 6 photosynthetic properties were similar to the results of indices for 6 growth characters. 9 clones could be divided into 3 categories of best, middle, and worst. Research showed that there was a positive correlation between the indices above\|mentioned and growth in \%Larix olgensis \%Henry, which could be applied to early selection of clones.
出处
《林业科学》
CAS
CSCD
北大核心
2000年第z01期80-85,共6页
Scientia Silvae Sinicae
基金
"八五"国家科技攻关项目!<落叶松建筑材
纸浆材良种选育>( 85 0 18 0 1 0 4 0 6)的部分研究内容
关键词
长白落叶松
无性系
光合性能
氮素代谢
早期选择
Larix olgensisHenry, Clone selection, Photosynthetic properties, Nitrogen metabolism, Indices
