net photosynthesis

net photosynthesis

the net uptake of carbon dioxide into a leaf, i.e. gross photosynthesis minus respiration.
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These studies have focused on the effect of ocean acidification on net photosynthesis of macrophytes in a brackish water environment and were carried out in the shallow semi-enclosed Koiguste Bay, Gulf of Riga, and northern Baltic Sea.
Thus, it was verified that with the increase of the E[C.sub.ns] there was a decrease of the net photosynthesis, in which the values of "A" of the plants with a spacing of 20 cm stood out those of 30 cm.
Lincoln, Nebraska, USA) was used for the measurement of single leaf net photosynthesis (umol CO2 m-2 s-1) at 75 and 65 DAS in 1st and 2nd season respectively.
The net photosynthesis (A) and transpiration rate (E) were evaluated in two leaves per replicate and data was averaged to each replicate.
Leaf net photosynthesis rate (Pn), stomatal conductance (gs), transpiration rate (Tr), and chlorophyll fluorescence ([F.sub.v]'/[F.sub.m]') were measured seven times from 20 to 32 DAP, from the youngest fully expanded leaves between 10:00 and 01:00 h, from three individual plants per treatment, using an LI-6400 portable photosynthesis meter (Li-COR Inc., Lincoln, NE) with an integrated fluorescence chamber head (Li-COR 6400-40 leaf Chamber Fluorometer, LI-Cor Inc.).
Baker, "The naturally varying energy environment and its effects upon net photosynthesis," Ecology, vol.
Table 3: Interaction effect of super rice varieties and rice special fertilizer formulas on net photosynthesis rate
Every 15 days after the 20th day in the greenhouse, we assessed 1) the net photosynthetic rate (A); 2) carboxylation efficiency, by the ratio between net photosynthesis and carbon concentration in mesophyll (A/Ci); 3) the ratio of mesophyll (Ci) to atmospheric (Ca) C[O.sub.2] concentration (Ci/Ca); 4) stomatal conductance (gs); 5) transpiration (E); and 6) efficiency of photosystem II (PSII).
Data for net photosynthesis rate ([micro]mol [m.sup.2] -[s.sup.-1]), stomata conductance (micromol [H.sub.2]O [m.sup.2] [s.sup.-1]) transpiration rate (milimol [m.sup.2] s-1), and Instantaneous water use efficiency (mol[m.sup.2] s-1 water transpired/mmol[m.sup.2] C[O.sub.2.sup.-1] assimilated) was collected during the measurement.
[12] found that net photosynthesis rate and soluble protein content in the stamen leaf decrease after anthesis and at the beginning of ageing and the foliar application of ABA after anthesis increases ageing rate.
Net photosynthesis (A), transpiration rate (Tr), and stomatal conductance (gs) were determined using Li-6400 (Li-6400, LICOR, Inc., Lincoln, NB, USA) following the method described in Hu et al.