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022 _a0176-1617
040 _aMSU
_bEnglish
_cMSU
_erda
050 0 0 _aQK711.2 JOU
100 1 _aGitelson, Anatoly A.
_eauthor
245 1 0 _aEfficiency of chlorophyll in gross primary productivity: A proof of concept and application in crops
_ccreated by Anatoly A. Gitelson, Yi Peng, Andrés Viña, Timothy Arkebauer and James S. Schepers
264 _aAmsterdam:
_bElsevier GmbH,
_c2016.
336 _2rdacontent
_atext
_btxt
337 _2rdamedia
_aunmediated
_bn
338 _2rdacarrier
_avolume
_bnc
440 _aJournal of plant physiology
_vVolume 201
520 3 _aOne of the main factors affecting vegetation productivity is absorbed light, which is largely governed by chlorophyll. In this paper, we introduce the concept of chlorophyll efficiency, representing the amount of gross primary production per unit of canopy chlorophyll content (Chl) and incident PAR. We analyzed chlorophyll efficiency in two contrasting crops (soybean and maize). Given that they have different photosynthetic pathways (C3 vs. C4), leaf structures (dicot vs. monocot) and canopy architectures (a heliotrophic leaf angle distribution vs. a spherical leaf angle distribution), they cover a large spectrum of biophysical conditions. Our results show that chlorophyll efficiency in primary productivity is highly variable and responds to various physiological and phenological conditions, and water availability. Since Chl is accessible through non-destructive, remotely sensed techniques, the use of chlorophyll efficiency for modeling and monitoring plant optimization patterns is practical at different scales (e.g., leaf, canopy) and under widely-varying environmental conditions. Through this analysis, we directly related a functional characteristic, gross primary production with a structural characteristic, canopy chlorophyll content. Understanding the efficiency of the structural characteristic is of great interest as it allows explaining functional components of the plant system.
650 _aCrops
_vMaize
_xPrimary production
700 1 _aPeng, Yi
_eco-author
700 1 _aViña, Andrés
_eco-author
700 1 _aArkebauer, Timothy
_eco-author
700 1 _aSchepers, James S.
_eco-author
856 _u10.1016/j.jplph.2016.05.019
942 _2lcc
_cJA
999 _c168906
_d168906