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Advances in Photosynthesis Fundamental Aspects Part 15

Tham khảo tài liệu 'advances in photosynthesis fundamental aspects part 15', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 412 Advances in Photosynthesis - Fundamental Aspects Fig. 5. Net photosynthetic rate An stomatal conductance to water gH2O and ratio of intercellular to ambient CO2 concentration Ci Ca in mature leaves of Laurus nobilis Phillyrea angustifolia and Quercus ilex during winter and spring. Different letters indicate statistical differences among species small letters and between seasons capital letters . Values are means SD n 8 . 3.3 The semi-deciduous species Cistus incanus L. The comparison between young and mature leaves of the semi-deciduous species C. incanus evidenced that the quantum yield of PSII linear electron transport Oren was lower in mature as compared to young leaves P 0.001 whereas the quantum yield of regulated energy dissipation OnPq showed an opposite tendency P 0.05 Fig. 7A B . No significant difference in non regulated energy dissipation Ono and maximum photochemical efficiency Fv Fm was detected P 0.05 between the two leaf typologies Fig. 7C D . The photochemical behavior of mature C. incanus leaves was different during winter and the following spring. More specifically in spring leaves showed higher values of OPSII P 0.001 and lower values of ONPQ and ONO P 0.005 compared to winter Fig. 7E F G whereas no significant difference in Fv Fm between the two seasons was observed Fig. 7H . 413 Photosynthetic Adaptive Strategies in Evergreen and Semi-Deciduous Species of Mediterranean Maquis During Winter Fig. 6. Quantum yield of linear PSII electron transport OPsn regulated energy dissipation Onpq non-regulated energy dissipation ONO and maximum PSII photochemical efficiency Fv Fm in mature leaves of Laurus nobilis Phillyrea angustifolia and Quercus ilex during winter and spring. Different letters indicate statistical differences among species small letters and between seasons capital letters . Values are means SD n 8 . The results relative to leaf functional traits and photosynthetic pigment content are reported in the table 2. The analysis of functional