نتایج جستجو برای: photosynthetically active radiation
تعداد نتایج: 668272 فیلتر نتایج به سال:
To improve the yield of sweet peppers in Japan, we investigated relationships between plant growth characteristics and fruit yield, with a particular focus on dry matter production. Fruit fresh weight (i.e., yield) was highly correlated weight. Aboveground production both light use efficiency intercepted photosynthetically active radiation. Although number fruits set ratio, no correlation found...
PAR, J.lmol/m2/s x 10o o Environment. The standard environment comprised 50 'standard' weeks (-1 year), a week being defined as the period during which 58 heat units (HU) accumulate (mean annual temperature at Mount Edgecombe, 20,3°C, giving 8,3 HU/day, using a base temperature of 12, or 58 HU/wk). Mean annual photosynthetically active radiation (PAR) income at Mount Edgecombe is 7,9 Ml/mvday, ...
Different models driven by remotely sensed vegetation indexes (VIs) and incident photosynthetically active radiation (PAR) were developed to estimate gross primary production (GPP) in a subalpine grassland equipped with an eddy covariance flux tower. Hyperspectral reflectance was collected using an automatic system designed for high temporal frequency acquisitions for three consecutive years, i...
This study addresses the analysis of cloud effects on photosynthetically active radiation (PAR, 400–700 nm) for global (PAR Global ) and its diffuse component Diffuse ). To this aim, a 11-year database measured PAR modeled Difuse recorded in Mediterranean site was analyzed, both clear-sky all-sky scenarios. mean values entire period were estimated (200 ± 50) Wm −2 (240 all- scenarios, respectiv...
Stomatal openings can be stimulated by light through two signalling pathways. The first pathway is blue light specific and involves phototropins, while the second pathway mediates a response to photosynthetically active radiation (PAR). This second pathway was studied with the use of albino Vicia faba plants and variegated leaves of Chlorophytum comosum. Treatment of V. faba with norflurazon (N...
Potential and limitations of inferring ecosystem photosynthetic capacity from leaf functional traits
The aim of this study was to systematically analyze the potential and limitations of using plant functional trait observations from global databases versus in situ data to improve our understanding of vegetation impacts on ecosystem functional properties (EFPs). Using ecosystem photosynthetic capacity as an example, we first provide an objective approach to derive robust EFP estimates from gros...
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