摘要
为了解杂草稻及其杂交后代品系(F_(12))叶片对光、CO_(2)响应及叶绿素荧光特性,利用光合测定仪和叶绿素荧光测定仪,测定杂草稻、栽培稻及其杂交后代品系(F_(12))的净光合速率、相对电子传递速率对光强和叶室CO_(2)浓度响应以及叶绿素荧光参数;采用直角双曲线模型拟合法,计算其光饱和点、光补偿点、CO_(2)饱和点、CO_(2)补偿点、表观量子效率、羧化效率、光化学效率和电子传递速率等指标。结果表明:栽培稻的光饱和点、CO_(2)饱和点和表观量子效率相对优于杂草稻及其杂交后代,而杂草稻的光补偿点、CO_(2)补偿点和表观羧化率相对优于栽培稻及其杂交后代。在叶绿素PSⅡ系统的光反应过程中,杂草稻的光能利用效率和光合速率指标优于栽培稻,在水稻种质资源利用上杂草稻资源具有一定的利用价值。
To understand the response of weedy rice and its hybrid line(F_(12)) to light and CO_(2) and chlorophyll fluorescence characteristics, the responses of net photosynthetic rate and relative electron transfer rate to light intensity and leaf chamber CO_(2) concentration and chlorophyll fluorescence parameters of weedy rice, cultivated rice and their hybrid lines(F_(12)) were measured by photosynthetic analyzer and chlorophyll fluorescence analyzer. Light saturation point, light compensation point, CO_(2) saturation point, CO_(2) compensation point, apparent quantum efficiency, carboxylation efficiency, photochemical efficiency and electron transfer rate were calculated by rectangular hyperbolic model fitting method. The results showed that light saturation point, CO_(2) saturation point and apparent quantum efficiency of cultivated rice were better than those of weedy rice and its hybrid progeny, while light compensation point, CO_(2) compensation point and apparent carboxylation rate of weedy rice were better than those of cultivated rice and its hybrid progeny. In the photoreaction process of chlorophyll PSⅡ system, light energy utilization efficiency and photosynthetic rate index of weedy rice were better than those of cultivated rice, indicating that weedy rice has certain value in the utilization of rice germplasm resources.
作者
王艺凝
王婷婷
程舒
李海粟
吴明根
WANG Yining;WANG Tingting;CHENG Shu;LI Haisu;WU Minggen(College of Agriculture,Yanbian University,Yanji 133002,China)
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2021年第1期28-32,50,共6页
Journal of Jilin Agricultural University
基金
国家自然科学基金项目(31760521)。
关键词
杂草稻
杂交后代
光合作用
叶绿素荧光参数
weedy rice
hybrid offspring
photosynthesis
chlorophyll fluorescence parameter