摘要
对山茶属植物五个物种光合作用的研究结果表明,物种间光合速率差异明显,4月份,最高和最低的相差达16倍;7月份,各物种光合速率普遍升高,物种间差距缩小,最高和最低相差2.5倍。各物种光合日变化曲线总的趋势一致,并具有明显的光合作用“午睡现象”。光合年变化可分为三种类型。当叶片成熟后,叶绿素含量与光合速率无明显相关。当光合作用基本停止后,气孔并不完全关闭。
The photosynthesis of five species of Camellia was investigeted. The results were as follows: (1) there were significant differences of photosynthetic rate existing among the species.(2) the highest photosynthetic rate in the tested species was 16 times as much as the lowest in April and 2.5 times in July respectively. (3) the daily-changing pattern of photosynthetic rate was similar in different species and showed a clear mid-day depression of photosynthesis. The yearly photosynthetic rate changes of these species could be classified as three different types. The content of chlorophyll had no significant relation to photosynthetic rate when leaves had fully developed. Not all stomas were closed after photosynthesis ceased roughly.
出处
《林业科学研究》
CSCD
北大核心
1993年第3期311-316,共6页
Forest Research
关键词
山茶属
光合作用
Camellia, photosynthesis, content of chlorophyll, opened degree of stoma
