摘要
以5种引种地被竹为材料,利用IMAG ING-PAM便携式荧光仪对其叶绿素荧光参数进行测定。结果表明:铺地竹、靓竹、菲白竹、黄条金刚竹和菲黄竹的光化学淬灭系数(qP)和PSⅡ电子传递量子效率(ΦPSⅡ)差异不显著。菲黄竹的表观光合电子传递速率(ETR)和非光化学猝灭系数(qN)显著高于铺地竹和黄条金刚竹(P<0.05)。铺地竹的PSⅡ最大光化学量子产量(Fv/Fm)显著低于其余4个竹种,其差异性达显著水平(P<0.05)。铺地竹在试验地全光照环境下的适应性没有其它竹种强,防御光抑制的能力最弱,光饱和点为800μmol/(m2.s),此时ETR达到最高值60μmol/(m2.s),菲黄竹具有最高的光能利用率和防御光抑制能力,其光饱和点为1 300μmol/(m2.s),此时ETR达到最高值110μmol/(m2.s)。
The chlorophyll fluorescence parameters of five introduced dwarf bamboos were measured by IMAGING-PAM chlorophyll fluorometer.The results showed that the differences in photochemical quenching coefficient（qP） and quantum yield of photosystem Ⅱ electron transport（ΦPSⅡ） of Pleioblastus argenteostriatus,P.glabra f.albo-striata,P.fortunei,P.kongosanensis f.aureo-striaus,and P.auricoma were not extremely significant.Apparent photosynthetic electron transport rate（ETR） and non-photochemical quenching coefficient（qN） of Pleioblastus auricoma were significantly higher than those of P.argenteostriatus and P.kongosanensisf.aureo-striaus（P0.05）.The maximal photochemical efficiency of photosystem Ⅱ（Fv/Fm） of P.argenteostriatus was significantly lower than that of the other four dwarf bamboos（P0.05）.The adaptabilities to the full illumination environment and the capabilities of defensing photoinhibition of P.argenteostriatus were the lowest of the five dwarf bamboos.It＇s light saturation point was 800μmol/（m2·s） with its highest ETR（60μmol/（m2·s））.The light utilization efficiency and capability of defensing photoinhibition of P.auricoma were the highest of the five dwarf bamboos.It＇s light saturation point was 1300μmol/（m2·s） with its highest ETR（110μmol/（m2·s））.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2011年第4期726-730,共5页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家“863”计划(2006AA100109)
国家“十一五”科技支撑课题(2006BAD19B0203
2006BAD19B0204)
关键词
地被竹
叶绿素荧光参数
光响应曲线
dwarf bamboos
chlorophyll fluorescence parameters
light response curves
