Abstract
Jones (1) has discussed two main reasons for attempting to manipulate stornata by breeding. The first was to maximise productivity and hence yield, by increasing rates of assimilation of CO2. An increase in stomatal conductance would be expected to achieve this in C3 species by increasing the partial pressure of CO2 within the leaf, p., which would be useful in conditions where water supply is not limiting. The second was to improve drought tolerance. A decreased stomatal conductance can aid in this direction, but at some expense to yield potential (yield in well-watered conditions).
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References
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Farquhar, G.D., Hubick, K.T., Terashima, I., Condon, A.G., Richards, R.A. (1987). Genetic Variation in the Relationship between Photosynthetic CO2 Assimilation Rate and Stomatal Conductance to Water Loss. In: Biggins, J. (eds) Progress in Photosynthesis Research. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-0519-6_46
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DOI: https://doi.org/10.1007/978-94-017-0519-6_46
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