Chantereau, J. and Goislot, K. and Albaric, L. and et al, .
(2012)
Synchronism between adventitious root and leaf development in hydroponic sorghum.
Journal of SAT Agricultural Research, 10.
pp. 1-5.
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Abstract
Plant studies rarely investigate how vegetative
development and root development affect each other.
Better characterization of this relation is a key point in
understanding how plants adapt to diverse environmental
conditions. The difficulty is that roots are not directly
accessible in the natural environment and the traditional
methods used to study roots are difficult, destructive and
time consuming. As a result, the acquired information is
generally limited to root biomass or length distribution in
the soil.
Hydroponic culture methods could be a way of more
easily gaining information on root characteristics and
growth. They allow the rooting potential of plants to be
expressed and the genetics of root traits to be investigated
as done by Tuberosa et al. (2002). Blum et al. (1977a,
1977b) used them to study the effect of maturity genes
and heterosis on the sorghum (Sorghum bicolor) root
system. They carried out interesting observations on the
appearance of adventitious roots, which are produced in
sequence in concentric whorls with a lag between whorl
initiation events in juvenile sorghum plants. They thus
defined the concept of the root plastochron and noted that
it appeared constant over the experimental period
(limited to 38 days after germination).
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