These lignified cells are not associated with the development of a periderm
. Many clorenchymatous cells continue to be alive, and stems are green.
of flooded and non-flooded Ludwigea octovalvis (Onagraceae).
Secondary cortex or periderm
: 0 = absent; 1 = present.
Eine vergleichende Untersuchung uber die physiologischen Scheiden Polyderm, Periderm
Developmental anatomy of vascular cambium and periderm
of Botrypus virginianus and its bearing on the systematic position of Ophioglossaceae.
Thallus partially immersed in the periderm
, in section 50-80 [my]m thick, ecorticate, dominated by the irregular photobiont layer, with large clusters of calcium oxalate crystals.
The root in both species is composed of periderm
on the outside and felloderm where 4-5 radial rows are broken down and felloderm with 2-3 rows of tissue.
kok-saghyz is covered with a well-developed periderm
, consisting of phellem, phellogen and phelloderm.
It has been suggested that Trichoderma penetrates the stem through the thin periderm
, lenticels, leaf scars or scars of bud scales (Baum et al, 2003; Ouellette et al, 1995; Stone, 1987) and also stem trichomes (Bailey et al., 2009).
However, as in the caulirosula species, the secondary coating is formed by layers of suberized cells, which are discontinuous in the organ and do not form a periderm
itself, because there is no phellogen (Fig.
Phosphite applications induce molecular modifications in potato tuber periderm
and cortex that enhance resistance to pathogens.
The best choice for hardiness is the one that favors photosynthesis in the renewal zone with resultant maximal darkness of cane periderm
color for that cultivar (see the photo on page 84).