Relationship between net photosynthetic rate of flue-cured tobacco and its physio-ecological factors
The diurnal changes of net photosynthetic rate (Pn) in leaves of tobacco cultivar Jiyan NO. 9" were studied by LI-6400 portable photosynthesis system, and the relationship between the Pn and its physio-ecological factors was studied by principal components and path analysis. The results showed...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Zhejiang University Press
2011-03-01
|
| Series: | 浙江大学学报. 农业与生命科学版 |
| Subjects: | |
| Online Access: | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2011.02.011 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849412876415008768 |
|---|---|
| author | ZHANG Guang-fu ZHAO Ming-qin HAN Fu-gen LÜ Zhong-xian LIU Le YAN Yong-sheng |
| author_facet | ZHANG Guang-fu ZHAO Ming-qin HAN Fu-gen LÜ Zhong-xian LIU Le YAN Yong-sheng |
| author_sort | ZHANG Guang-fu |
| collection | DOAJ |
| description | The diurnal changes of net photosynthetic rate (Pn) in leaves of tobacco cultivar Jiyan NO. 9" were studied by LI-6400 portable photosynthesis system, and the relationship between the Pn and its physio-ecological factors was studied by principal components and path analysis. The results showed that the curve of diurnal variation of Pn was demonstrated single peak in clear day, and the majority of peak presented to 11:00, which was 9.88 μmol·m<sup>-2</sup>·s<sup>-1</sup>, and it did not show midday depression; the diurnal changes of stomatal conductance (Gs), transpiration rates (Tr), leaf temperature (T<sub>L</sub>) and air temperature (T<sub>a</sub>) all appeared as single peak curves, and there were positive relationships between Gs, Tr, T<sub>L</sub>, T<sub>a</sub> and Pn; T<sub>L</sub> and Tr were the major ones in diurnal change of physiological factors, and T<sub>L</sub>, T<sub>a</sub> and C<sub>a</sub> were the major ones in diurnal change of ecological factors; the direct impact of physiological factors to Pn was the order of Gs>T<sub>L</sub>>Tr>C<sub>i</sub>, and the direct impact of ecological factors to Pn was the order of T<sub>L</sub>>T<sub>a</sub>> relative humidity (RH) >C<sub>a</sub>> photosynthetically active radiation (PAR). Comprehensive analysis showed that Gs, Tr and T<sub>L</sub> played very important roles in the changes of Pn among the physiological factors, and light and temperature affected the changes of Pn among the ecological factors. |
| format | Article |
| id | doaj-art-2dce8d608cbe4574aa77f0e9a80649b7 |
| institution | Kabale University |
| issn | 1008-9209 2097-5155 |
| language | English |
| publishDate | 2011-03-01 |
| publisher | Zhejiang University Press |
| record_format | Article |
| series | 浙江大学学报. 农业与生命科学版 |
| spelling | doaj-art-2dce8d608cbe4574aa77f0e9a80649b72025-08-20T03:34:18ZengZhejiang University Press浙江大学学报. 农业与生命科学版1008-92092097-51552011-03-013718719210.3785/j.issn.1008-9209.2011.02.01110089209Relationship between net photosynthetic rate of flue-cured tobacco and its physio-ecological factorsZHANG Guang-fuZHAO Ming-qinHAN Fu-genLÜ Zhong-xianLIU LeYAN Yong-shengThe diurnal changes of net photosynthetic rate (Pn) in leaves of tobacco cultivar Jiyan NO. 9" were studied by LI-6400 portable photosynthesis system, and the relationship between the Pn and its physio-ecological factors was studied by principal components and path analysis. The results showed that the curve of diurnal variation of Pn was demonstrated single peak in clear day, and the majority of peak presented to 11:00, which was 9.88 μmol·m<sup>-2</sup>·s<sup>-1</sup>, and it did not show midday depression; the diurnal changes of stomatal conductance (Gs), transpiration rates (Tr), leaf temperature (T<sub>L</sub>) and air temperature (T<sub>a</sub>) all appeared as single peak curves, and there were positive relationships between Gs, Tr, T<sub>L</sub>, T<sub>a</sub> and Pn; T<sub>L</sub> and Tr were the major ones in diurnal change of physiological factors, and T<sub>L</sub>, T<sub>a</sub> and C<sub>a</sub> were the major ones in diurnal change of ecological factors; the direct impact of physiological factors to Pn was the order of Gs>T<sub>L</sub>>Tr>C<sub>i</sub>, and the direct impact of ecological factors to Pn was the order of T<sub>L</sub>>T<sub>a</sub>> relative humidity (RH) >C<sub>a</sub>> photosynthetically active radiation (PAR). Comprehensive analysis showed that Gs, Tr and T<sub>L</sub> played very important roles in the changes of Pn among the physiological factors, and light and temperature affected the changes of Pn among the ecological factors.https://www.academax.com/doi/10.3785/j.issn.1008-9209.2011.02.011Jiyan NO. 9net photosynthetic ratephysiological factorsecological factors |
| spellingShingle | ZHANG Guang-fu ZHAO Ming-qin HAN Fu-gen LÜ Zhong-xian LIU Le YAN Yong-sheng Relationship between net photosynthetic rate of flue-cured tobacco and its physio-ecological factors 浙江大学学报. 农业与生命科学版 Jiyan NO. 9 net photosynthetic rate physiological factors ecological factors |
| title | Relationship between net photosynthetic rate of flue-cured tobacco and its physio-ecological factors |
| title_full | Relationship between net photosynthetic rate of flue-cured tobacco and its physio-ecological factors |
| title_fullStr | Relationship between net photosynthetic rate of flue-cured tobacco and its physio-ecological factors |
| title_full_unstemmed | Relationship between net photosynthetic rate of flue-cured tobacco and its physio-ecological factors |
| title_short | Relationship between net photosynthetic rate of flue-cured tobacco and its physio-ecological factors |
| title_sort | relationship between net photosynthetic rate of flue cured tobacco and its physio ecological factors |
| topic | Jiyan NO. 9 net photosynthetic rate physiological factors ecological factors |
| url | https://www.academax.com/doi/10.3785/j.issn.1008-9209.2011.02.011 |
| work_keys_str_mv | AT zhangguangfu relationshipbetweennetphotosyntheticrateoffluecuredtobaccoanditsphysioecologicalfactors AT zhaomingqin relationshipbetweennetphotosyntheticrateoffluecuredtobaccoanditsphysioecologicalfactors AT hanfugen relationshipbetweennetphotosyntheticrateoffluecuredtobaccoanditsphysioecologicalfactors AT luzhongxian relationshipbetweennetphotosyntheticrateoffluecuredtobaccoanditsphysioecologicalfactors AT liule relationshipbetweennetphotosyntheticrateoffluecuredtobaccoanditsphysioecologicalfactors AT yanyongsheng relationshipbetweennetphotosyntheticrateoffluecuredtobaccoanditsphysioecologicalfactors |