scholarly journals Single leaf photosynthesis of rice plants under field conditions. V. Long-term variations in photosynthesis of upper leaves.

1990 ◽  
Vol 59 (1) ◽  
pp. 113-119 ◽  
Author(s):  
Eiki KURODA ◽  
Atsuhiko KUMURA
Keyword(s):  
Field Conditions ◽  
Leaf Photosynthesis ◽  
Rice Plants ◽  
Single Leaf ◽  
Long Term Variations

scholarly journals A system for measuring single leaf photosynthesis and related factors simultaneously under field conditions.

1987 ◽  
Vol 56 (1) ◽  
pp. 51-58 ◽  
Author(s):  
Eiki KURODA ◽  
Atsuhiko KUMURA ◽  
Yoshio MURATA
Keyword(s):  
Field Conditions ◽  
Leaf Photosynthesis ◽  
Related Factors ◽  
Single Leaf

Fluvial magnetic susceptibility as a proxy for long‐term variations of mountain permafrost development in the Alp‐Carpathian region

Boreas ◽  
2021 ◽  
Author(s):  
Zoltán Püspöki ◽  
Philip Leonard Gibbard ◽  
Annamária Nádor ◽  
Edit Thamó‐Bozsó ◽  
Pál Sümegi ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Carpathian Region ◽  
Mountain Permafrost ◽  
Long Term Variations

scholarly journals Effect of Spaceflight on Tomato Seed Quality and Biochemical Characteristics of Mature Plants

Horticulturae ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. 89
Author(s):  
Elena Dzhos ◽  
Nadezhda Golubkina ◽  
Marina Antoshkina ◽  
Irina Kondratyeva ◽  
Andrew Koshevarov ◽  
...  
Keyword(s):  
Seed Quality ◽  
Space Station ◽  
Field Conditions ◽  
Tomato Seed ◽  
Tomato Plants ◽  
Biochemical Characteristics ◽  
Tomato Seeds ◽  
Genetic Modifications ◽  
Total Antioxidant

Intensive space exploration includes profound investigations on the effect of weightlessness and cosmic radiation on plant growth and development. Tomato seeds are often used in such experiments though up to date the results have given rather vague information about biochemical changes in mature plants grown from seeds subjected to spaceflight. The effect of half a year of storage in the International Space Station (ISS) on tomato seeds (cultivar Podmoskovny ranny) was studied by analyzing the biochemical characteristics and mineral content of mature plants grown from these seeds both in greenhouse and field conditions. A significant increase was recorded in ascorbic acid, polyphenol and carotenoid contents, and total antioxidant activity (AOA), with higher changes in the field conditions compared to greenhouse. Contrary to control plants, the ones derived from space-stored seeds demonstrated a significant decrease in root AOA. The latter plants also showed a higher yield, but lower content of fruit dry matter, sugars, total dissolved solids and organic acids. The fruits of plants derived from space-stored seeds demonstrated decreased levels of Fe, Cu and taste index. The described results reflect the existence of oxidative stress in mature tomato plants as a long-term consequence of the effect of spaceflight on seed quality, whereas the higher yield may be attributed to genetic modifications.

Long-term variations of surface solar radiation in China from routine meteorological observations

2021 ◽  
pp. 105715
Author(s):  
Xuefang Yang ◽  
Wenmin Qin ◽  
Lunche Wang ◽  
Ming Zhang ◽  
Zigeng Niu
Keyword(s):  
Solar Radiation ◽  
Surface Solar Radiation ◽  
Meteorological Observations ◽  
Long Term Variations
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