scholarly journals Studies on the Physiological Characteristics of C3 and C4 Crop Species : I. The effects of air temperature on the apparent photosynthesis, dark respiration, and nutrient absorption of some crops

1977 ◽  
Vol 46 (1) ◽  
pp. 45-52 ◽  
Author(s):  
Nguyen Quoc VONG ◽  
Yoshio MURATA
Keyword(s):  
Air Temperature ◽  
Dark Respiration ◽  
Nutrient Absorption ◽  
Physiological Characteristics ◽  
Crop Species

scholarly journals Effects of elevated air temperature on physiological characteristics of flag leaves and grain yield in rice

2013 ◽  
Vol 73 (2) ◽  
pp. 00-01 ◽  
Author(s):  
Qi-Hua Liu ◽  
Xiu Wu ◽  
Tian Li ◽  
Jia-Qing Ma ◽  
Xue-Biao Zhou
Keyword(s):  
Grain Yield ◽  
Air Temperature ◽  
Physiological Characteristics ◽  
Flag Leaves

Effects of soil temperature on the carbon exchange of taiga seedlings.: II. Photosynthesis, respiration, and conductance

1983 ◽  
Vol 13 (5) ◽  
pp. 850-859 ◽  
Author(s):  
William T. Lawrence ◽  
Walter C. Oechel
Keyword(s):  
Soil Temperature ◽  
Air Temperature ◽  
Dark Respiration ◽  
Temperature Treatment ◽  
Day Length ◽  
Light Conditions ◽  
Interior Alaska ◽  
Air Temperatures ◽  
Leaf Dark Respiration ◽  
Growth Room

Potted seedlings of Poputustremutoides Michx., Populusbalsamifera L., Alnuscrispa (Ait.) Pursh., and Betulapapyrifera Marsh., hardwoods of the taiga of interior Alaska, were placed under soil-temperature treatments of 5, 15, and 25 °C with plant tops under a growth-room regime of 20-h day length and day–night air temperatures of 25 and 20 °C, respectively. Photosynthesis showed a differential soil-temperature effect among the species. Maximum photosynthetic rates of 9.5 mg CO2•h−1•dm−2 were observed for P. tremuloides at 25 °C soil and 25 °C air temperature; 9.3 mg CO2•h−1•dm−2 for P. balsamifera at the same temperature combination; and 7.8 mg CO2•h−1•dm−2 for A. crispa at 25 °C air temperature and the lowest soil-temperature treatment, 5 °C. The maximum photosynthetic rate observed for B. papyrifera was 4.9 mg CO2•h−1•dm−2 at 25 °C soil temperature and 20 °C air temperature; low values being due to nonsaturating light conditions. Both leaf dark respiration and conductance were reduced by the 5 °C soil-temperature treatment at one or more air temperatures in all species except A. crispa which was unaffected by cold soils. A cold-soil reduction of conductance was most pronounced at air temperatures above 20 °C.

scholarly journals Effect of Water Stress on the Physiological Characteristics of Five Basil (Ocimum basilicum L.) Cultivars

Agronomy ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1029
Author(s):  
Iakovos Kalamartzis ◽  
George Menexes ◽  
Pantazis Georgiou ◽  
Christos Dordas
Keyword(s):  
Water Stress ◽  
Water Resources ◽  
Essential Oil ◽  
Water Potential ◽  
Oil Content ◽  
Physiological Characteristics ◽  
Assimilation Rate ◽  
Gas Exchange Parameters ◽  
Crop Species ◽  
Effect Of Water

Water stress in one of the most important abiotic stresses that affects the productivity of many crop species worldwide. In addition, the climate change creates new challenges for crop adaptation especially as water resources become limited and the increase in water stress becomes more pronounced even in areas where there is adequate water supply. The objective of the present study was to determine the effect of water stress on physiological characteristics of five cultivars of basil under field conditions. Water stress affected leaf temperature, dry herb yield, leaf water potential, assimilation rate and gas exchange parameters, quantum yield, instantaneous water use efficiency (WUE), and essential oil content. From the physiological characteristics water potential and assimilation rate can be used for the selection of basil cultivars tolerant to water stress. In addition, essential oil content was lower under water stress indicating that essential oil content is correlated with water availability. From the present study it is obvious that there are tolerant basil cultivars to water stress and can be found using physiological traits such as water potential and assimilation rate and can be used to save and use water more sustainable and also conserve the water resources.

scholarly journals Studies on the Physiological Characteristics of C3 and C4 Crop Species

1978 ◽  
Vol 47 (1) ◽  
pp. 90-100 ◽  
Author(s):  
Nguyen Quoc VONG ◽  
Yoshio MURATA
Keyword(s):  
Physiological Characteristics ◽  
Crop Species

scholarly journals Effect of Low pH on the Growth, Physiological Characteristics and Nutrient Absorption of Sago Palm in a Hydroponic System

2012 ◽  
Vol 15 (2) ◽  
pp. 125-131 ◽  
Author(s):  
Ornprapa Anugoolprasert ◽  
Shina Kinoshita ◽  
Hitoshi Naito ◽  
Masafumi Shimizu ◽  
Hiroshi Ehara
Keyword(s):  
Low Ph ◽  
Nutrient Absorption ◽  
Physiological Characteristics ◽  
Hydroponic System ◽  
Sago Palm
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