| Effects of drought stress on gas exchange and chlorophyll fluorescence characteristics in leaves of two pepper (Capsicum annuum L) varieties |
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| DOI：10.7606/j.issn.1000-7601.2008.05.33 |
| Key Words: drought stress Capsicum annuum L gas exchange characteristics chlorophyll fluorescence characteristics |
| Author Name | Affiliation | | HU Wenhai | School of Life Sciences, Jinggangshan University, Ji'an, Jiangxi 343009, China
Research Center for Eco-Environmental Sciences of Jinggangshan, Ji’an, Jiangxi 343009, China | | ZENG Jianjun | School of Life Sciences, Jinggangshan University, Ji'an, Jiangxi 343009, China | | CAO Yulin | School of Life Sciences, Jinggangshan University, Ji'an, Jiangxi 343009, China
Research Center for Eco-Environmental Sciences of Jinggangshan, Ji’an, Jiangxi 343009, China | | XIAO Yian | Jiangxi Tea School, Wuyuan, Jiangxi 333200, China | | DUAN Zhihui | School of Life Sciences, Jinggangshan University, Ji'an, Jiangxi 343009, China |
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| Abstract: |
| Gas exchange and chlorophyll fluorescence characteristics of two varieties of pepper (Capsicum annuum L) were studied in drought stress. The results showed that relative water content(RWC), relative electrolyte conductivity(REC), net photosynthetic rate(Pn) and the maximal photochemical efficiency of PSII (Fv/Fm) were decreased by treated 5 d under drought stress, especially in Jizhao×Jilin. Drought resulted in a decrease of stomatal conductance (Gs), but induced significantly increases of water use efficiency (WUE), non-photochemical quenching coefficient (NPQ) and the ratio of photorespiration rate and net photosynthetic rate (Pr/Pn), especially in Zhengjiao No.13. These results suggested that higher drought tolerance of pepper was associated with the capacity to keep higher WUE, NPQ and Pr/Pn under drought stress. |
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