Yu Jihua, Zhang Yun, Niu Caixia, Li Jianjian
College of Agronomy, Gansu Agricultural University, Lanzhou, China.
Ying Yong Sheng Tai Xue Bao. 2006 Sep;17(9):1629-32.
In a culture experiment, the effects of different concentration 2,6-bis (1, 1-dimethylethyl) phenol and 1,2-benzodicarboxylic dimethyl ester on the photosynthesis and chlorophyll fluorescence characteristics of eggplant seedlings were studied, and the results showed that these two allelochemicals were the barriers of chlorophyll content, net photosynthetic rate (Pn), and stomatal conductance (Gs). The intercellular CO2 concentration (Ci) decreased in the former period, and then increased. The allelochemicals increased initial fluorescence (Fo), but decreased maximum photochemical efficiency of PS II (Fv/Fm), quantum efficiency of non-cyclic electron transport of PS II (phi(PSII)), photochemical quenching ((qP) and antenna conversion efficiency (Fv'/Fm' ). 2,6-bis (1,1-dimethylethyl) phenol made non-photochemical quenching (qN) increase first and decrease then, while 1,2-benzodicarboxylic dimethyl ester decreased qN, which was harmful to the photosynthesis structure.
在一项培养实验中，研究了不同浓度的2,6-双（1,1-二甲基乙基）苯酚和邻苯二甲酸二甲酯对茄子幼苗光合作用及叶绿素荧光特性的影响，结果表明这两种化感物质是叶绿素含量、净光合速率（Pn）和气孔导度（Gs）的阻碍因素。细胞间CO2浓度（Ci）前期下降，之后上升。化感物质使初始荧光（Fo）增加，但使PS II的最大光化学效率（Fv/Fm）、PS II的非循环电子传递量子效率（phi(PSII)）、光化学猝灭（(qP)）和天线转换效率（Fv'/Fm'）降低。2,6-双（1,1-二甲基乙基）苯酚使非光化学猝灭（qN）先升高后降低，而邻苯二甲酸二甲酯使qN降低，这对光合作用结构有害。
