scholarly journals Resistance Analysis of Nocturnal Carbon Dioxide Uptake by a Crassulacean Acid Metabolism Succulent, Agave deserti

1978 ◽  
Vol 61 (4) ◽  
pp. 510-514 ◽  
Author(s):  
Park S. Nobel ◽  
Terry L. Hartsock
Planta ◽  
1979 ◽  
Vol 147 (2) ◽  
pp. 141-144 ◽  
Author(s):  
M. André ◽  
D. A. Thomas ◽  
D. J. von Willert ◽  
A. Gerbaud

1974 ◽  
Vol 52 (5) ◽  
pp. 1146-1148 ◽  
Author(s):  
A. N. Purohit ◽  
E. B. Tregunna

Species within subfamilies and tribes of the Gramineae that have low carbon dioxide compensation values are either short-day or day-neutral in their photoperiodic requirement for flowering; those with high carbon dioxide compensation values are long-day, with a few exceptions. Photoperiodic screening of some species of Atriplex, Amaranthus, and Panicum revealed that the species with the C4 syndrome are quantitative short-day or day-neutral, except for P. miliaceum. Those lacking the C4 syndrome have a qualitative short-day requirement for flowering. It is assumed that the C4 syndrome is a derived condition from C3 plants with CAM (crassulacean acid metabolism) plants probably in between. The photoperiodic responses of the plants seem to have a coevolutionary trend with photosynthetic characters, from long-day types to short-day ones, with plants having a dual photoperiodic requirement in between.


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