Photosynthetic light‐use efficiency of rice leaves under fluctuating incident light
نویسندگان
چکیده
منابع مشابه
Estimating photosynthetic radiation use efficiency using incident light and photosynthesis of individual leaves.
It has been theorized that photosynthetic radiation use efficiency (PhRUE) over the course of a day is constant for leaves throughout a canopy if leaf nitrogen content and photosynthetic properties are adapted to local light so that canopy photosynthesis over a day is optimized. To test this hypothesis, 'daily' photosynthesis of individual leaves of Solanum melongena plants was calculated from ...
متن کاملRegulation of the photosynthetic apparatus under fluctuating growth light.
Safe and efficient conversion of solar energy to metabolic energy by plants is based on tightly inter-regulated transfer of excitation energy, electrons and protons in the photosynthetic machinery according to the availability of light energy, as well as the needs and restrictions of metabolism itself. Plants have mechanisms to enhance the capture of energy when light is limited for growth and ...
متن کاملPhotosynthetic Characteristics of Rice Leaves Aged under Different Irradiances from Full Expansion through Senescence.
Effects of irradiance on photosynthetic characteristics were examined in senescent leaves of rice (Oryza sativa L.). Two irradiance treatments (100 and 20% natural sunlight) were imposed after the full expansion of the 13th leaf through senescence. The photosynthetic rate was measured as a function of intercellular CO(2) pressure with a gas-exchange system. The amounts of cytochrome f, coupling...
متن کاملCompetition of phytoplankton under fluctuating light.
Light is an essential resource for phytoplankton and fluctuates on a wide range of timescales. To understand how light fluctuations affect phytoplankton community structure and diversity, we have studied a set of simple models using a combination of analytical and numerical techniques. Light fluctuations can affect community structure when species exhibit the gleaner-opportunist trade-off betwe...
متن کاملGrowth rates of phytoplankton under fluctuating light
1. The effect of light fluctuations on the growth rates of four species of freshwater phytoplankton was investigated. Experimental light regimes included constant irradiance and fluctuations of a step function form, with equal proportion of high (maximum of 240 mmol photons m s) and low light (minimum of 5 mmol photons m s) (or dark) in a period. Fluctuations of 1, 8 and 24-h periods were impos...
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ژورنال
عنوان ژورنال: Agrosystems, Geosciences & Environment
سال: 2020
ISSN: 2639-6696,2639-6696
DOI: 10.1002/agg2.20030