scholarly journals Light-response curve of photosynthesis and model fitting in leavesof Mangifera indica under different soil water conditions

2019 ◽  
Vol 57 (3) ◽  
pp. 796-803 ◽  
Author(s):  
Y.L. LI ◽  
X.G. LIU ◽  
K. HAO ◽  
Q.L. YANG ◽  
X.Q. YANG ◽  
...  
Keyword(s):  
Soil Water ◽  
Response Curve ◽  
Mangifera Indica ◽  
Model Fitting ◽  
Light Response ◽  
Light Response Curve ◽  
Water Conditions ◽  
Soil Water Conditions ◽  
Fitting In

scholarly journals Diurnal Change of the Photosynthetic Light-Response Curve of Buckbean (Menyanthes trifoliata), an Emergent Aquatic Plant

Plants ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 174
Author(s):  
Azumi Okamoto ◽  
Kohei Koyama ◽  
Narayan Bhusal
Keyword(s):  
High Temperature ◽  
Response Curve ◽  
Light Response ◽  
Terrestrial Plants ◽  
Light Response Curve ◽  
Midday Depression ◽  
Diurnal Course ◽  
Water Conditions ◽  
Soil Water Conditions ◽  
Menyanthes Trifoliata

Understanding plant physiological responses to high temperature is an important concern pertaining to climate change. However, compared with terrestrial plants, information about aquatic plants remains limited. Since the degree of midday depression of photosynthesis under high temperature depends on soil water conditions, it is expected that emergent aquatic plants, for which soil water conditions are always saturated, will show different patterns compared with terrestrial plants. We investigated the diurnal course of the photosynthetic light-response curve and incident light intensity for a freshwater emergent plant, buckbean (Menyanthes trifoliata L.; Menyanthaceae) in a cool temperate region. The effect of midday depression was observed only on a very hot day, but not on a moderately hot day, in summer. The diurnal course of photosynthetic light-response curves on this hot day showed that latent morning reduction of photosynthetic capacity started at dawn, preceding the apparent depression around the midday, in agreement with results reported in terrestrial plants. We concluded that (1) midday depression of emergent plants occurs when the stress intensity exceeds the species’ tolerance, and (2) measurements of not only photosynthetic rate under field conditions but also diurnal course of photosynthetic light-response curve are necessary to quantify the effect of midday depression.

Comparison between modified exponential model and common models of light-response curve

2013 ◽  
Vol 36 (12) ◽  
pp. 1277-1285 ◽  
Author(s):  
Wei-Ying CHEN ◽  
Zhen-Yong CHEN ◽  
Fu-Yan LUO ◽  
Zheng-Song PENG ◽  
Mao-Qun YU
Keyword(s):  
Response Curve ◽  
Light Response ◽  
Exponential Model ◽  
Light Response Curve

RESPONSE OF PEAS TO ENVIRONMENT: IV. EFFECT OF FIVE SOIL WATER REGIMES ON GROWTH AND DEVELOPMENT OF PEAS

1968 ◽  
Vol 48 (2) ◽  
pp. 129-137 ◽  
Author(s):  
A. R. Maurer ◽  
H. F. Fletcher ◽  
D. P. Ormrod
Keyword(s):  
Water Stress ◽  
Soil Water ◽  
Growth And Development ◽  
Dry Matter ◽  
Fresh Weight ◽  
Water Regimes ◽  
Severe Water Stress ◽  
Water Conditions ◽  
Before And After ◽  
Soil Water Conditions

Pea plants growing in "weighing lysimeters" were subjected to five soil-water regimes to determine their response to varying conditions of soil water imposed at different stages of development. Plants subjected to a minimal water stress developed luxuriantly and continued to grow up to the harvest period. Pea yield and plant height were not reduced, but fresh weight and dry matter were less if irrigation was applied when soil water fell to 60% rather than 88% of that available. A severe water stress after blossom reduced pea yield, irrespective of soil-water conditions prior to blossom. Plants which had been given ample soil water before blossom wilted visibly when a severe stress was imposed in the post-blossom period, yet wilting did not occur in plants subjected to severe water stress both before and after blossom. Severe water stress prior to blossom did not cause a decrease in pea yield if ample soil moisture was made available after blossom.

scholarly journals ОКРЕМІ ПИТАННЯ АНАЛІЗУ УШКОДЖЕНЬ БУДІВЕЛЬНИХ ОБ’ЄКТІВ ВЕЛИКОЇ ПЛОЩІ

2018 ◽  
pp. 356-364
Author(s):  
Марек Дохойда ◽  
Йоанна Вітковска-Добрев
Keyword(s):  
Soil Water ◽  
Expansion Joints ◽  
Concrete Shrinkage ◽  
Design And Implementation ◽  
Water Conditions ◽  
Complex Engineering ◽  
Soil Water Conditions ◽  
Bottom Slab

У роботі представлений перелік проблем, що супроводжують будівельні об'єкти великої площі, в тому числі й підземні гаражі. Здійснено технічний аналіз окремих проблем, що виникають в таких будівлях під час їх експлуатації. Проектування, а пізніше і будівництво підземних гаражів найчастіше, пов'язане з вирішеням складних інженерних питань. Згідно з ними до найпоширеніших конструкційних недоліків у підземних гаражах віднесні: тріщини нижньої плити, порушення поверхових перекриттів, невластиве кручення бетону, відсутність дилатації або також помилково прийняті ґрунтово-водні умови.The paper concerns complex engineering challenges associated with multi-storey underground car parks. An analysis of selected issues in underground garages during the exploitation was performed. The design and implementation of structures of which function are underground garages is most often associated with serious engineering challenges. For structural reasons frequently occurring faults in garages may include fracture of the bottom slab and intermediate floors resulting from improper design of reinforcement, concrete shrinkage, lack of expansion joints or incorrectly adopted soil-water conditions.

The Photosynthesis-Light Response Curve

1992 ◽  
pp. 156-191 ◽  
Author(s):  
Richard J. Geider ◽  
Bruce A. Osborne
Keyword(s):  
Response Curve ◽  
Light Response ◽  
Light Response Curve
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