Results 171 to 180 of about 167,459 (209)

Drift of Net Assimilation Rate in Plants

Nature, 1938
IN reply to the letter from R. F. Williams1, may I say that I much regret not having mentioned his paper2 and that of Ballard and Petrie3 in my note on the effect of age on net assimilation and relative growth-rates in the cotton plant4, but I have just seen them for the first time.
openaire   +1 more source

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
openaire   +1 more source

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 ...
openaire   +1 more source

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
openaire   +2 more sources

Supplemental manganese improves the relative growth, net assimilation and photosynthetic rates of salt-stressed barley

Physiologia Plantarum, 1992
Previous results in our laboratory indicated that a reduced Mn concentration in the leaves of barley was highly correlated with the reduced relative growth and net assimilation rates of salt‐stressed plants. If Mn deficiency limits the growth of salt‐stressed barley, then increasing leaf Mn concentrations should increase growth.
Grant R. Cramer, Robert S. Nowak
openaire   +2 more sources

Relation of Magnesium Supply to Growth and Net Assimilation-rate in Barley

Nature, 1955
IN recent years attention has been directed to the increasing incidence of magnesium deficiency in crop plants1, and it is also possible that such a deficiency may cause disease in ruminants grazing on affected herbage2. Using the methods of growth analysis3, a study is being made of the effect of this element on carbon assimilation in plants.
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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).
openaire   +1 more source

Breast Cancer Statistics, 2022

Ca-A Cancer Journal for Clinicians, 2022
Hyuna Sung, Kimberly D Miller, Rebecca L Siegel   +2 more
exaly