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Web URL(s):https://academic.oup.com/aob/article/47/2/249/176231/Seasonal-Changes-in-the-Physiology-of-S24
    Last checked: 03/02/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide Page
Publication Type:
i
Refereed
Author(s):Parsons, A. J.; Robson, M. J.
Author Affiliation:Department of Plant and Crop Physiology, The Grassland Research Institute, Hurley, Maidenhead, Berkshire
Title:Potential leaf and canopy photosynthesis during the transition from vegetative to reproductive growth
Article Series:Seasonal changes in the physiology of S24 perennial ryegrass (Lolium perenne L.), part 2
Source:Annals of Botany. Vol. 47, No. 2, February 1981, p. 249-258.
Publishing Information:London, England, United Kingdom: Academic Press Inc. Limited
# of Pages:10
Keywords:TIC Keywords: Canopy; Growth studies; Leaves; Photosynthesis; Physiological processes; Reproductive performance; Seasonal variation; Vegetative period
Abstract/Contents:"The photosynthetic potential of successive youngest fully-expanded leaves of S24 L. perenne, grown as simulated swards under natural environmental conditions, was measured during establishment in autumn, over winter and during the transition from vegetative to reproductive growth the following spring. Measurements were made at a standard light energy receipt of 250 J m-2 s-1 (400-700 nm) and at 15 °C. The photosynthetic potential of the leaves decreased in autumn as the swards increased in density under worsening environmental conditions. During the spring, photosynthetic rates rose from low over-winter values so that by March, before stem elongation began, they were equal to the rates in the previous autumn. Following stem elongation there was a further increase in leaf potential. Reasons for these changes in leaf potential are discussed. During spring, the photosynthetic potential of the canopy also rose - both as measured, and as predicted by the Monteith model of canopy photosynthesis. Use of the model suggested that increasing leaf potential made the greatest contribution to the rise in the potential of the canopy, although, following stem elongation, changes in LAI and canopy structure had a further significant effect."
Language:English
References:23
See Also:See also part 1 "Response of leaf extension to temperature during the transition from vegetative to reproductive growth" Annals of Botany, 46(4) October 1980, p. 435-444, r=4525. R=4525

See also part 3 "Partition of assimilates between root and shoot during the transition from vegetative to reproductive growth" Annals of Botany, 48(5) November 1981, p. 733-744, R=229326. R=229326

See also part 4 "Comparison of the carbon balance of the reproductive crop in the spring and the vegetative crop in autumn" Annals of Botany, 50(2) August 1982, p. 167-177, R=4415. R=4415
Note:Equations
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Parsons, A. J., and M. J. Robson. 1981. Potential leaf and canopy photosynthesis during the transition from vegetative to reproductive growth. Ann. Bot. 47(2):p. 249-258.
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Web URL(s):
https://academic.oup.com/aob/article/47/2/249/176231/Seasonal-Changes-in-the-Physiology-of-S24
    Last checked: 03/02/2017
    Access conditions: Item is within a limited-access website
    Notes: Guide Page
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