FENG Jian,WANG Qian-chun,YAN Ting-wu.Study on Photosynthetic Rate in Seedling ofDifferent ?Pinus contorta Provenances[J].HEILONGJIANG AGRICULTURAL SCIENCES,2014,(12):124-125.
不同种源小干松苗期光合速率研究
- Title:
- Study on Photosynthetic Rate in Seedling ofDifferent ?Pinus contorta Provenances
- 文章编号:
- 1002-2767（2014）12-0124-02
- Keywords:
- Pinus contorta; photosynthetic rate; provenance
- 分类号:
- S791
- 文献标志码:
- A
- 摘要:
- 为了选择适合辽宁地区生长的小干松种源，研究了不同种源小干松苗期光合效率。结果表明，小干松净光合速率（Pn）和蒸腾速率（Tr）日变化均为单峰型。10∶00时，不同种源间净光合速率大小范围为48.07～64.13 μmol·m-2·s-1，蒸腾速率大小范围为18.94～24.35 mmol·m-2s-1。12∶00时，不同种源间净光合速率大小范围为54.08~65.13 μmol·m-2s-1，蒸腾速率大小范围为11.85～18.65 mmol·m-2·s-1。方差分析结果表明，小干松种源间的Pn和Tr存在显著差异，因此可将光合作用指标作为小干松种源选择的依据。
- Abstract:
- In order to select the Pinus contorta provenance that adapt to plant in Liaoning area,photosynthetic rate in breeding of different provenance Pinus contorta was tested.The results showed that the diurnal Pn and Tr variation of Pinus contortawere generally classified as single peak.At 10 o’clock,the range of Pn and Tr were 48.07~64.13 μmol·m-2·s-1 and 18.94~24.35 mmol·m-2s-1,respectively.At 12 o’ clock,the range of Pn and Tr were 54.08~65.13 μmol·m-2·s-1 and 11.85~18.65 mmol·m-2·s-1,respectively.Variance analysis showed that among different provenance Pn and Tr had significant difference.Therefore,photosynthesis index could be used for provenances selection of Pinus contorta·
参考文献/References:
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备注/Memo
基金项目：国家林业局“948”资助项目（2012-4-39）；辽宁省科学技术计划重大资助项目（2011207002）。