| 沈植国， 汤正辉， 程建明，等.4种黄连木光合特性研究[J].广东农业科学,2015,42(3):39-42 |
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4种黄连木光合特性研究 |
| Photosynthetic characteristics of four Pistacia species |
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| DOI： |
| 中文关键词: 黄连木 净光合速率 光响应 日变化 |
| 英文关键词: Pistacia chinesis Bunge photosynthetic rate light response diurnal variation |
| 基金项目: |
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| 中文摘要: |
| 为了研究不同种黄连木之间光合特性的差异，利用 Li-6400XT 便携式光合测定仪，对 4 种黄连木光合指标的日变化和光响应特征进行了测定。 结果表明：日变化中 4 种黄连木的净光合速率、蒸腾速率、气孔导度基本为单峰型，没有明显的光合“午休”现象，胞间 CO2浓度与净光合速率呈负相关；4 种黄连木最大光合速率为 13.393 ~18.603 滋mol/m2窑s，表观量子效率为 0.04~0.05，光补偿点为 42.007~201.622 滋mol/m2窑s，光饱和点为 1 514.195~1 973.116 滋mol/m2窑s；4 种黄连木的光合特性存在差异，以黄连木杂交种（UCB-I）光合效率表现最好。 |
| 英文摘要: |
| The comparative studies on the photosynthetic characteristics of four Pistacia species were carried out
using Li-6400XT portable photosynthesis system in the field light condition. The results showed that the diurnal
variation in net photosynthetic rate of four Pistacia species presented a single-apex curve. There was no obvious
midday depression冶phenomenon occurred in all. There was a negative correlation between intercellular CO2
concentration and photosynthetic rate. The minimum value of photosynthetic rate was 13.393 mol/m2s, the
maximum value of photosynthetic rate was 18.603 mol/m2s. The value of apparent quantum efficiencies was
between 0.04 and 0.05. The minimum value of light compensation points was 42.007 mol/m2s, the maximum value
of light compensation points was 201.622 mol/m2s. The value of light saturation points was between 1 514.195
mol/m2s and 1 973.116mol/m2s. There was significant difference among four Pistacia species in photosynthetic
characteristics, especially Pistacia hybrid (UCB-I) was better in photosynthetic rate. |
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