Ahmadi Lahijani, M.J.,
Kafi, M., Nezami, A., Nabati, J.
and Erwin, J.E.
2019
Effect of
CO2 enrichment
on gas exchanges,
biochemical traits,
and minituber yiel
in potato cultivars:
Solanum tuberosum L.
biochemical traits,
and minituber yiel
in potato cultivars:
Solanum tuberosum L.
Journal of Agricultural
Science and Technology 21: 883-894.
NOTE:
Potato (Solanum tuberosum)
is the fourth most important
crop globally with an annual
production nearing
400 million tons.
SUMMARY:
"Raising the levels of CO2
in minituber production systems
could be beneficial to stimulate
the productivity and tuber yield
[of potato plants]."
Measures of net photosynthesis
take at one and two months
after the start of the experiment
revealed a CO2-induced stimulated
of this parameter by a respective
+51% and +12% in Fontane
and +104% and +84%
in Agria cultivars.
Biochemical analyses
revealed elevated CO2
increases the starch content
in both cultivars but had
no significant impact
on soluble sugars.
Elevated CO2 increased
the dry matter of the leaf,
stem, shoot, root, tuber a
nd total plant by
+29%, +28%, +28%,
+37%, +166% and +50%
for the Agria cultivar,
respectively, and by
+37%, +55%, +42%,
+65%, +77% and +60%,
respectively, for Fontane.
An increase partitioning
of the dry matter
in the underground
parts of the plants,
especially in the tubers,
resulted in:
"a significant increase
in the tuber yield
of both cultivars."
DETAILS:
Ahmadi Lahijani et al. (2019)
grew two potato cultivars
(Agria and Fontane)
in controlled-environment
chambers at Ferdowsi
University of Mashad,
Islamic Republic of Iran
under either
ambient (400 ppm)
or elevated (800 ppm)
CO2 levels over
a full growing season.