缺磷胁迫对温州蜜柑光合作用的光抑制研究(一)  

Studies on Photoinhibition of Phospghorus Deficiency Stress to the Photosynohesis of Citrus unshiu Marc.(Ⅰ)

作　　者：陈屏昭[1] 陈顺方[1] 刘忠荣[1] 周云[1] 樊钦平[1] 

机构地区：[1]云南昭通师范高等专科学校,云南昭通657000

出　　处：《云南农业大学学报》2003年第3期281-285,共5页Journal of Yunnan Agricultural University

摘　　要：经缺磷处理后,温州蜜柑叶片的表观量子效率(AQY),最大荧光(Fm),光化学效率(Fv/Fm),光量子产量(Y)和电子传递速率(ETR)下降,而初始荧光(Fo)上升。净光合速率(Pn)和光呼吸速率(Pr)均下降。但Pr/Pn比值升高。表明缺磷处理后,温州蜜柑更易发生光合作用的光抑制。After phosphorus deficiency treatment,the apparent quantum yield(AQY),maximum fluorescence(Fm),photochemical efficiency(Fv/Fm),light quantum yield (Y) and electron transmit rate (ETR) of the Citrus unshiu Marc. were declined. whereas, the original fluorescence(Fo) were increased. Both net photosynthetic rate (Pn) and photorespiration rate (Pr) were declined, but Pr/Pn ratio was raised. These results indicated that the photoinhibition of photosynthesis was happened on the Citrus unshiu Marc. more easily after phosphorus deficiency treatment.

关 键 词：磷胁迫 温州蜜柑 光合作用 光抑制 表观量子效率 最大荧光 光化学效率 光量子产量 电子传递速率 

分 类 号：Q945.11[生物学—植物学]