Photosynthetic systems: implications for agroforestry.
1983
Tieszen L.L.
Three principal mechanisms of CO2 reduction occur in terrestrial plants. The C3 system is certainly the most common and generally characterizes all woody plants and most evolutionary families. The C4 system has evolved relatively recently and is most common in the Poaceae (Gramineae) and Cyperaceae and less common in families of the Centrospermeae. C3 and C4 systems are characterized by suites of interrelated anatomical, biochemical and physiological characteristics. These are fundamental in determining maximum rates of photosynthesis and productivity as well as determining the responses to a variety of environmental conditions. Thus these characteristics are also important in establishing the distributions of native species and in determining what species should perform best in various agroforestry systems. These characteristics are discussed.
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