Variation in photosynthetic characteristics of Cyclocarya paliurus seedlings from different provenances

YANG Ruiqing, CHU Xiuli, YANG Wanxia, SHANG Xulan, FANG Shengzuo, CHE Shaohui

Journal of Nanjing Forestry University (Natural Sciences Edition） ›› 2012, Vol. 36 ›› Issue (04) : 41-45.

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南京林业大学学报（自然科学版）
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Journal of Nanjing Forestry University (Natural Sciences Edition） ›› 2012, Vol. 36 ›› Issue (04) : 41-45. DOI: 10.3969/j.jssn.1000-2006.2012.04.008

Variation in photosynthetic characteristics of Cyclocarya paliurus seedlings from different provenances

  • YANG Ruiqing1,2, CHU Xiuli1,3, YANG Wanxia1, SHANG Xulan1, FANG Shengzuo1*, CHE Shaohui3
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Abstract

The photosynthetic characteristics of Cyclocarya paliurus from twelve selected provenances were measured with Li Cor-6400 potable photosynthesis system. The results were as follows: The diurnal dynamic of photosynthesis rate(Pn)and transpiration rate(Tr)displayed a 2-peak “M” shaped curve which appeared at around 10:00 and 14:00 respectively. However, CO2 concentration between cells showed a “W” shaped curve which exactly opposite to the Pn and Tr curve. Stomatal conductance had max value at 6:00 but decreased quickly after then. However, it displayed same trend with Pn and Tr after 8:00. Water use efficiency(WUE)increased before 8:00 and after 12:00, but decreased during the period of 8:00-12:00. There were significant differences in the photosynthetic characteristics among different provenances selected. By using the significant differed photosynthesis characteristics to do the Fuzzy mathematics analysis, Kunming, Anji, Lushan, Ziyuan and Shucheng were considered the superior ones cultivated in Jiangsu province.

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YANG Ruiqing, CHU Xiuli, YANG Wanxia, SHANG Xulan, FANG Shengzuo, CHE Shaohui. Variation in photosynthetic characteristics of Cyclocarya paliurus seedlings from different provenances[J]. Journal of Nanjing Forestry University (Natural Sciences Edition）. 2012, 36(04): 41-45 https://doi.org/10.3969/j.jssn.1000-2006.2012.04.008

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