Effect of potassium fertilization on the photosynthetic characteristics of the leaf of winter wheat population during its grain filling stage

Abstract

Abstract: Six years field trials with or without potassium application showed that under potassium application,the maximum photosynthetic rate (Pmax),light saturation point (LSP) and light compensation point (LCP) of the flag leaf of winter wheat during its grain filling stage increased, the apparent photon utilization efficiency(α) decreased, and the dark respiration rate (Rd) increased slightly. For the daily variation of net photosynthetic rate(Pn) of winter wheat with and without potassium application, it appears a single peak curve, whether the weather condition was sunny or cloudy. "Stomatal factor" was the main cause of the decrease of net photosynthetic rate (Pn) in the beforenoon and afternoon of sunny days and in the whole day of cloudy days, while "non stomatal factor" was the main cause for the decrease of Pn around midday in sunny days.

Key words: Winter wheat, Potassium fertilizer, Grain filling stage, Photosynthetic characteristics, InVEST model, CA-Markov model, habitat quality, Logistic regression model, landscape pattern, driving force.

CLC Number:

Q945.11

QI Hua, YU Guirui, CHENG Yisong, WANG Jianlin. Effect of potassium fertilization on the photosynthetic characteristics of the leaf of winter wheat population during its grain filling stage[J]. Chinese Journal of Applied Ecology, 2003, (5): 690-694.

References

[1] Clark RB.1982. Plant response tomineral element toxicity and deficiency. In:Christiansen MN, Lewis CF eds. Breeding Plants for Less Favorable Environments.New York:John Wiley and Sons.137～141
[2] Cown IR,et al.1982.A possible role for abscisic acid in stomatal conductance and photosynthetic carbon metabolism in leaves.Aust J Plant Physiol,9:489～498
[3] Grammatikopoulos G,Manetas Y.1990.Diurnal changes in phosphoenolpyruvate carboxylase and pyruvate, orthophosphate dikinase properties in the natural environment: interplay of light and temperature in a C4 thermophile.Physiol Plant,80:593
[4] Kalt-Torres W,Kerr PS,Usuda H,et al.1987.Diurnal changes in maize leaf photosynthesis Ⅰ.Carbon exchange rate, assimilate export rate, and emzyme activities.Plant Physiol.83:283
[5] Khairi, MMA,and Hall AE.1976.Temperature and humidity effect on net photosynthesis and transpiration of citrus.Physiol Plant,36:29～34
[6] Kuppers M,et al.1986.Carbon fixation in eucalypts in field-analysis of diurnal variations in photosynthetic capacity.Oecologia,70:273～282
[7] Li Y-Y(李秧秧). 1995. Effect of potassium on photosynthetic induction of leaves under drought condition.Plant Physiol Commun(植物生理学通讯),31(3):178～181 (in Chinese)
[8] Liu Y-F(刘允芬),Yu G-R(于贵瑞),Li J-Y(李家勇). 2001. Characteristics of photosynthesis for double-cropping rice in the red soil hilly area.Resour Sci(资源科学),23(6):49～53 (in Chinese)
[9] Liu Y-F(刘允芬),Zhang X-Z(张宪洲), Zhou Y-H(周允华).2000. Apparent quantum yield efficiency of winter in Taibet Plateau.Acta Ecol Sin(生态学报),20(1):35～38 (in Chinese)
[10] Long SP,Humphries S,Falkowski PG.1994.Photoinhibition of photosynthesis in nature.Annu Rev Plant Physiol Mol Biol,45:633～662
[11] Loveys BR.1984.Diurnal changes in water relations and abscisic acid in field-grew Vitis vnifera cultivar Ⅲ.The influence of xylem-derived abscisic acid on gas exchange.The New Phytol,98:563～573
[12] Qiu G-X(邱国雄).1992. Photosynthesis efficiency of vegetation. In:Botanic Physiology and Molecular Biology.Beijing: Science Press.236～243(in Chinese)
[13] Sharkey TD.1984.Transpiration-induced changes in the photosynthetic capacity of leaves.Planta,160:143～150
[14] Tenhunen JD,et al.1991.Factors influencing carbon fixation and water use by Mediterrenean sclerophyll shrubs during summer drought.Oecologia,82:381～393
[15] Usuda H,Kalt-Torres W,Kerr PS,et al.1987. Diurnal changes in maize leaf photosynthesis Ⅱ.Leaves of metabolic intermediates of sucrose synthesis and the regulatory metabolite fructose 2,6-bisphosphate.Physiol Plant,83:289
[16] Xu D-Q(许大全),Ding Y(丁勇),Shen Y-G(沈允钢). 1993. Diurnal variation of photosynthetic efficiency in leaves of C4 plant maize.Acta Phytophysiol Sin(植物生理学报),19(1):43～48(in Chinese)
[17] Xu D-Q(许大全),Xu B-J(徐宝基),Shen Y-G(沈允钢). 1990. Diurnal variation of photosynthetic efficiency in C3 plants.Acta Phytophysiol Sin(植物生理学报),16(1):1～5 (in Chinese)
[18] Yu Q(于强),Ren B-H(任宝华),Wang T-D(王天铎). 1998. A simulation of diurnal variations of photosynthesis of C3 plant leaves.Sci Atmos Sin(大气科学),22(6):867～880 (in Chinese)
[19] Zhang S-R(张守仁), Gao R-F(高荣孚).2001.Light induces leaf orientation and chloroplastmovemes of hybrid poplar clones.Acta Ecol Sin(生态学报),21(1):68～74(in Chinese)
[20] Zhang X-Q (张小全), Xu D-Y(徐德应).2001.Light responses of 18-year-old China fir shoots in relation to shoot ages and positions within crown. Acta Ecol Sin(生态学报),21(3):409～414(in Chinese)