Root length and diameter were lower at V-stage than the other two stages, and S-stage had higher lateral root to total root ratio.
A lateral root of a 3-year-old poplar in that study, reached up to 7.5 m from the stump and in this study, values of 3 to 5 m from the stem were reached in less than one-year indicating high lateral root growth rates.
Lyford and Wilson described similar dense, in-filling clusters of determinate 3rd- or higher-order lateral roots of the red maple tree, Acer rubrum, growing in Harvard Forest.
This was in sharp contrast to root system development in absence of protozoa, where high numbers of lateral root primordia and short (S-type) laterals occurred which did not grow out of the rhizosphere region of the axile root.
The PLEIOTROPIC DRUG RESISTANCE 2 (pdr2) mutant displays hypersensitive responses to P deficiency, showing higher density of lateral root meristems under the stress (Ticconi et al., 2004).
The two transgenic lines had a higher root tip number, lateral root length and total root length than the wild type under both high and low P conditions (Fig. 7B D).
Here, we report that high salt exposure suppresses lateral root initiation and organogenesis, resulting in the abortion of lateral root development.
The advantages of using poplar for erosion control include rapid growth, high evapotranspiration rates, extensive lateral root systems, abundant fine root production, and rapid tree establishment from vegetative material.
Alder and cherry had dense branching lateral root systems with high root numbers (high root density and high root order) while redwood and cypress had similar dense root systems, but many fine long branching roots.
Advantages of poplar and willow for soil conservation on unstable hill country include rapid establishment from stem cuttings, ease of establishment in the presence of grazing livestock (sheep/cows/deer), extensive lateral root development, high evapotranspiration rates during the growing season, and tolerance of seasonally wet soils (Wilkinson [1999]).
