metamer


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Related to metamer: metamere, metameric segmentation

metamer

[′med·ə·mər]
(organic chemistry)
One of two or more chemical compounds that exhibits isomerism with the others.

metamer

A light, 2 of the same color as another light, but of different spectral power distribution.
References in periodicals archive ?
Since the number of potential axillary buds per metamer can be considered as a fixed botanical data, it is straightforward to deduce the whole plant structure from the population of buds.
For the sake of clarity, we only consider in this study growth units with one metamer.
A metamer of PA 1 can bear a maximum of two lateral buds of PA 2 (i.
In Abutilon, neighbor identity had no effect on above-ground biomass, number of main axis nodes, maximum internode length, petiole length, area per leaf, and metamer mass, or specific masses of stems, petioles, or leaves (0.
Petiole leaf inclination angles of both Abutilon and Polygonum followed a regular pattern with metamer age, and were generally unaffected by neighbor identity.
In plants with variable growth pattern where nodal position does not accurately reflect comparable phases of development, a hypothesis of deletion or insertion of metamers may be untestable.
Thus, plants do not merely increase in size (biomass, height, volume) during ontogeny by adding metamers, but these metamers almost universally show a certain degree of variation, in part simply because an increase in size necessitates correlated changes in shape and geometry (Niklas, 1994).
So, for instance, generative cells constitute the meristem, which produces metamers, which together make up modules.
Metamers, in their various modifications, are organized into repeating units, and these determine the aspect and organization of the shoot system.
One of the downsides of the choice method of evaluating colorimetric metamers is that in addition to different brightness, stimuli also appear different in color.
These stimuli were colorimetric metamers, but they were not visual metamers to real human observers.
If, under the same illuminant, samples with different spectral reflectance functions yield the same cone quantum catches, they will be perceived to be of the same colour, and are referred to as metamers.