Results 31 to 40 of about 118,702,901 (260)

Determination of chlorophyll and carotenoid content in Mediterranean riparian forest species using visible spectroscopy

open access: yesPhotosynthetica
Leaf-level optical measurements are essential for monitoring Mediterranean riparian forests. This study used visible spectroscopy (400-750 nm) to determine and quantify leaf pigments in five species: Salix salviifolia, Fraxinus angustifolia, Alnus ...
M. MARTÍNEZ MENA   +2 more
doaj   +1 more source

Study some of Garden Cress (Lepidium sativum L.) Physiological Traits at Levels of Irrigation and Ascorbic Acid [PDF]

open access: yesIkufīziyuluzhī-i Giyāhān-i Zirā̒ī, 2017
Drought seriously reduces the quality and quantity of agronomic and horticultural plants. In such condition, using factors to reduce these effects on plants is indispensible. To evaluate the effect of water stress and different levels of ascorbic acid on
Zohre Akbari   +3 more
doaj  

Photosynthetic responses of heat-stressed apple leaves to foliar application of salicylic and ascorbic acid

open access: yesPhotosynthetica
High temperatures have significant impacts on fruit tree production. Foliar spraying application of promoting agents can be a sustainable approach to managing high-temperature stress in orchards.
I. MIHALJEVIĆ   +4 more
doaj   +1 more source

A new approach for estimating northern peatland gross primary productivity using a satellite-sensor-derived chlorophyll index

open access: yes, 2011
Carbon flux models that are largely driven by remotely sensed data can be used to estimate gross primary productivity (GPP) over large areas, but despite the importance of peatland ecosystems in the global carbon cycle, relatively little attention has ...
A. Harris   +4 more
core   +1 more source

Deriving sun-induced chlorophyll fluorescence from airborne based spectrometer data [PDF]

open access: yes, 2010
Sun-induced chlorophyll fluorescence (Fs) is a promising parameter for remote measuring plant photosynthesis. It has been demonstrated that Fs at cell and leaf level is strongly related to photosynthesis.
Schaepman, Michael E; https://orcid.org/   +10 more
core   +1 more source

Development of a handheld chlorophyll content detector on wheat and maize leaves based on RGB sensor

open access: yesFrontiers in Plant Science
Chlorophyll-a (CL-a) and chlorophyll-b (CL-b) are major chlorophyll found in green plants. Determining the CL-a, CL-b, and total chlorophyll (TCL) contents is important to guide crop growth.
Weidong Pan   +6 more
doaj   +1 more source

Inter-Comparison of Methods for Chlorophyll-a Retrieval: Sentinel-2 Time-Series Analysis in Italian Lakes

open access: yesRemote Sensing, 2021
Different methods are available for retrieving chlorophyll-a (Chl-a) in inland waters from optical imagery, but there is still a need for an inter-comparison among the products. Such analysis can provide insights into the method selection, integration of
Milad Niroumand-Jadidi   +3 more
doaj   +1 more source

Chlorophyll-a at RV08_Adria4

open access: yes, 2002
Chlorophyll-a at ...
Tahey, Tom M, Tom M Tahey (6978422)
core   +1 more source

Stable Carbon Isotope Signature of Particulate Organic Matter in the Southwestern Sumatran Waters of the Eastern Indian Ocean

open access: yesASEAN Journal on Science and Technology for Development, 2019
The Southwestern Sumatran Waters of the Eastern Indian Ocean are known to be affected by the South Java Current and the South Equatorial Counter Current. Many studies have been carried out in relation to upwelling and the Indonesian Through Flow. However,
A'an Johan Wahyudi   +2 more
doaj   +1 more source

Chlorophyll-a at UR03_Adria8a

open access: yes, 2002
Chlorophyll-a at ...
Tahey, Tom M, Tom M Tahey (6978422)
core   +1 more source

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