Results 171 to 180 of about 168,176 (201)

Net Assimilation Rate and Growth in Loblolly Pine Seedlings

Forest Science, 1969
Abstract Loblolly pine (Pinus taeda L.) progenies from controlled crosses showed genetic variation in the seasonal pattern of net assimilation and dry weight growth. The rank of progenies in net assimilation rate (NAR) changed during the first growing season.
F. Thomas Ledig, Thomas O. Perry
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TEMPERATURE IN RELATION TO GROWTH AND NET ASSIMILATION RATE OF OATS

Canadian Journal of Plant Science, 1966
The effects of temperature variations in the microclimate on two oat varieties were investigated in relation to the growth of this crop as measured by total dry matter and net assimilation rate (N.A.R.). A significant correlation of + 0.691 was obtained between N.A.R.
N. C. Stoskopf, H. R. Klinck, H. A. Steppler   +2 more
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Rates of net assimilation and respiration of amino acids by marine bacteria

Journal of Oceanography, 1974
The selectivity of amino acid assimilation by marine bacteria was examined using seven kinds of14C-amino acids and the acid hydrolysate of14C-labelled proteins. It was found that the net assimilation and respiration by marine bacteria followed MICHAELIS-MENTEN kinetics for all of amino acids used in our experiments.
Yoshiaki Maita, Mitsuru Yanada, Akira Rikuta   +2 more
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LEAF AREA AND NET ASSIMILATION RATE AS DETERMINANTS OF CROP YIELD

1966
The relation of agronomic practice to crop yield is discussed in terms of photosynthetic efficiency of the crops (as measured by Leaf Area and Net Assimilation rates). The importance of a study of these factors in certain tropical crops is indicated.
Spence, J. A., Haynes, P. H., Spence, J. A., Haynes, P. H.   +3 more
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Net assimilation rate in barley, oats and wheat

The Journal of Agricultural Science, 1967
Net assimilation rate (E) was measured in three experiments involving related species and cultivated varieties with increasing grain yield potential in the genera Hordeum, Avena and Triticum. No consistent differences in E between the barley varieties were found, but in the oat and wheat experiments, Abundance and Atle respectively had lower values of ...
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High rates of net ecosystem carbon assimilation by Brachiara pasture in the Brazilian Cerrado

Global Change Biology, 2004
AbstractTo investigate the consequences of land use on carbon and energy exchanges between the ecosystem and atmosphere, we measured CO2 and water vapour fluxes over an introduced Brachiara brizantha pasture located in the Cerrado region of Central Brazil.
Santos, A., Quesada, C., Da Silva, G., Maia, J., Miranda, H., Miranda, A., Lloyd, J.   +6 more
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Net assimilation rate of wheat as affected by light intensity and temperature

Canadian Journal of Botany, 1969
The net assimilation rate of wheat, on a leaf area basis, declined with time under constant environmental conditions. With continuous illumination at temperatures of 20, 25, and 30 °C, the net assimilation rate increased linearly with increases in the light intensity over the range 200 to 5000 ft-c. The optimal temperature was 15 to 20 °C, and the net
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Growth and net assimilation rates in thinned and unthinned stands of balsam fir

Canadian Journal of Forest Research, 1988
Current annual stem growth rates per hectare of unthinned young stands of balsam fir (Abiesbalsamea (L.) Mill.) were 2–3 times greater than in adjacent stands thinned 4–6 years earlier, largely because unthinned stands contained 2.5–4.0 times more foliar weight per hectare. Stem growth rates per tree in thinned stands were 3–8 times greater than those
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Plant Growth Analysis: A Note on the Variability of Unit Leaf Rate (Net Assimilation Rate) Within a Sample

Annals of Botany, 1994
Abstract Previously it has been established that when mean relative growth rate (RGR) is estimated from growth data by the classical method of growth analysis, the computed variance of RGR is probably greater than it should be. By similar procedures, it is now demonstrated that the same is true of unit leaf rate (ULR).
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Effect of Temperature on Net Assimilation Rate

Annals of Botany, 1966
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