樟树幼苗机械损伤叶片对挥发性有机化合物及叶绿素荧光参数的影响

周帅, 林富平, 王玉魁, 沈应柏, 张汝民, 高荣孚, 高岩

Effects of mechanical damage of leaves on volatile organic compounds and chlorophyll fluorescence parameters in seedlings of Cinnamomum camphora

ZHOU Shuai, LIN Fu-Ping, WANG Yu-Kui, SHEN Ying-Bai, ZHANG Ru-Min, GAO Rong-Fu, GAO Yan

图2 机械损伤后樟树幼苗叶片叶绿素荧光动力学曲线的变化。A, 机械损伤后樟树幼苗叶片O-J-I-P荧光诱导曲线(3次重复的平均值)。B, Fo与Fm间相对可变荧光强度(Vt)随时间的变化, Vt = (Ft -Fo)/(Fm-Fo), Ft表示t时的荧光强度, Fo表示暗适应后的最小荧光强度, Fm表示暗适应后的最大荧光强度。C, Vt与对照的差值△Vt, △Vt = Vt(处理) -Vt (对照)。O、J、I、P各点含义详见李鹏民等(2005)。

Fig. 2 Variation of chlorophyll fluorescence transients in mechanically damaged leaves of Cinnamomum camphora seedlings. A, O-J-I-P transient recorded in seedlings leaves of C. camphora after mechanical damage (average of three samples). B, relative variable fluorescence (Vt) between Fo and Fm, Vt = (Ft -Fo)/(Fm-Fo), Ft description fluorescence at time t, Fo description minimum fluorescence intensity after dark adaptation, Fm description maximum fluorescence intensity after dark adaptation. C, differences (?Vt) of Vt to the CK, ?Vt = Vt (treatment) - Vt (CK). Meaning of O, J, I and P referred to Li et al. (2005).