不同生长年限川白芷光合生理特性研究
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摘要
该研究以不同生长年限的秋播川白芷为材料,探究一年生和二生年川白芷叶片最适光合响应曲线拟合模型以及两者的光合生理特性差异。试验结果表明,不同生长年限川白芷叶片最适光响应曲线拟合模型均为直角双曲线修正模型,其一年生植株叶片光饱和点为1 600μmol·m-2·s-1,二年生植株叶片光饱和点为1 700μmol·m-2·s-1;光补偿点分别为17. 98,52. 23μmol·m-2·s-1,符合典型阳生植物特征。不同生长年限川白芷叶片净光合速率、蒸腾速率、气孔导度日变化曲线均为单峰型,二年生川白芷叶片净光合速率和蒸腾速率日均值显著高于一年生川白芷,而气孔导度日均值无显著差异。不同生长年限川白芷叶片净光合速率都与气孔导度呈极显著正相关。一年生和二年生川白芷净光合速率与胞间CO2浓度分别呈极显著和显著负相关。一年生川白芷的蒸腾速率与有效光合辐射强度和空气温度呈显著正相关,与胞间CO2浓度呈极显著负相关;二年生白芷的蒸腾速率与有效光合辐射强度呈极显著正相关,而与胞间CO2浓度呈显著负相关。综上,二年生川白芷叶片光合效率高于一年生川白芷,但利用弱光能力不及一年生者,更适合种植于阳光充足地方。
In this study,the leaves of autumn-sown Angelica dahurica var. formosana from Sichuan province in different growth years was used to explore the fitting model of photosynthetic response curve and the different photosynthetic physiological characteristics between annual and biennial A. dahurica var. formosana from Sichuan province. The results showed that the fitting model of the optimum light response curve of the leaves of A. dahurica var. formosana from Sichuan province with different growth years was all rectangular hyperbolic correction model. The light saturation points were 1 600,1 700 μmol·m-2·s-1,the light compensation points were17. 98,52. 23 μmol·m-2·s-1 in the leaves of annual and biennial plant,respectively. The diurnal variation curves of net photosynthetic rate,transpiration rate and stomatal conductance in the leaves all acted as a single peak value wave. The daily mean values of net photosynthetic rate and transpiration rate in the leaves of biennial plant were significantly higher than that of annual plant. There was no significant difference in daily mean stomatal conductance. The net photosynthetic rate was significantly positively correlated with stomatal conductance in both of the different growth years. The net photosynthetic rate of annual and biennial A. dahurica var. formosana from Sichuan province had extremely significant and significantly negative correlation with the intercellular CO2 respectively. The transpiration rate of annual plant was positively correlated with the effective photosynthetic radiation intensity and air temperature,but had significantly negative correlation with the intercellular CO2 concentration. The transpiration rate of biennial plant had extremely positive correlation with the effective photosynthetic radiation intensity,and negatively correlated with the intercellular CO2 concentration. In conclusion,the photosynthetic efficiency of the leaves in biennial plant of A. dahurica var. formosana from Sichuan province was higher than that in annual plant,but the ability to utilize weak light was lower than that of annual plant. It should be planted in the sunny field.
In this study,the leaves of autumn-sown Angelica dahurica var. formosana from Sichuan province in different growth years was used to explore the fitting model of photosynthetic response curve and the different photosynthetic physiological characteristics between annual and biennial A. dahurica var. formosana from Sichuan province. The results showed that the fitting model of the optimum light response curve of the leaves of A. dahurica var. formosana from Sichuan province with different growth years was all rectangular hyperbolic correction model. The light saturation points were 1 600,1 700 μmol·m-2·s-1,the light compensation points were17. 98,52. 23 μmol·m-2·s-1 in the leaves of annual and biennial plant,respectively. The diurnal variation curves of net photosynthetic rate,transpiration rate and stomatal conductance in the leaves all acted as a single peak value wave. The daily mean values of net photosynthetic rate and transpiration rate in the leaves of biennial plant were significantly higher than that of annual plant. There was no significant difference in daily mean stomatal conductance. The net photosynthetic rate was significantly positively correlated with stomatal conductance in both of the different growth years. The net photosynthetic rate of annual and biennial A. dahurica var. formosana from Sichuan province had extremely significant and significantly negative correlation with the intercellular CO2 respectively. The transpiration rate of annual plant was positively correlated with the effective photosynthetic radiation intensity and air temperature,but had significantly negative correlation with the intercellular CO2 concentration. The transpiration rate of biennial plant had extremely positive correlation with the effective photosynthetic radiation intensity,and negatively correlated with the intercellular CO2 concentration. In conclusion,the photosynthetic efficiency of the leaves in biennial plant of A. dahurica var. formosana from Sichuan province was higher than that in annual plant,but the ability to utilize weak light was lower than that of annual plant. It should be planted in the sunny field.
引文
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[14]张婷婷,郭太君.白檀光合作用光补偿点和光饱和点的研究[J].黑龙江科学,2017,8(2):156.
[15]张振文,张保玉,童海峰,等.葡萄开花期光合作用光补偿点和光饱和点的研究[J].西北林学院学报,2010,25(1):24.
[16]魏晓慧,殷东生,郭树平.7个引种沙棘的光合特性[J].东北林业大学学报,2014,42(10):20.
[17]陈根云,陈娟,许大全.关于净光合速率和胞间CO2浓度关系的思考[J].植物生理学通讯,2010,46(1):64.
[2]陈兴福,卢进,丁德蓉,等.播种期对白芷早期抽苔影响的研究[J].中国中药杂志,1999,24(4):211
[3]郑翠英,夏艳姣,徐超群.白芷中香豆素类成分的提取[J].华西药学杂志,2008,23(6):683.
[4]陈兴福,丁德蓉,刘岁荣,等.生态环境对白芷产量质量的影响[J].生态学杂志,1995(3):29
[5]廖兴国,陈兰兰,赖晓莲,等.白芷叶片水分含量及光合生理特性初步研究[J].山东林业科技,2013,43(4):16.
[6]杨晴,李靖实,刘艳芳,等.祁白芷光合特性和生长发育动态研究[J].中国中药杂志,2014,39(15):2881.
[7]四川省种子站.2012年通过审定的农作物新品种(七)[J].四川农业科技,2013(5):12.
[8] Society T R.The kinetics of photosynthesis[J]. P Roy Soc London,1935,149(868):596.
[9] Gates D M. Book review:mathematical models in plant physiology. A quantitative approach to problems in plant and crop physiology[J].Q Rev Biol,1976,52(1):318.
[10]叶子飘,李进省.光合作用对光响应的直角双曲线修正模型和非直角双曲线模型的对比研究[J].井冈山大学学报:自然科学版,2010,31(3):38.
[11]叶子飘.光合作用对光和CO2响应模型的研究进展[J].植物生态学报,2010,34(6):727.
[12]许大全.叶片表观量子效率的测定[M].北京:科学出版社,1999.
[13] E G Krenzer,D N Moss,R K Crookston.Carbon dioxide compensation points of flowering plants[J].Plant Physiol,1975,56(2):194.
[14]张婷婷,郭太君.白檀光合作用光补偿点和光饱和点的研究[J].黑龙江科学,2017,8(2):156.
[15]张振文,张保玉,童海峰,等.葡萄开花期光合作用光补偿点和光饱和点的研究[J].西北林学院学报,2010,25(1):24.
[16]魏晓慧,殷东生,郭树平.7个引种沙棘的光合特性[J].东北林业大学学报,2014,42(10):20.
[17]陈根云,陈娟,许大全.关于净光合速率和胞间CO2浓度关系的思考[J].植物生理学通讯,2010,46(1):64.
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