Claim · model-written summary
Increasing N supply increased the shoot/root ratio of dry weight.
- Taxon
- T. aestivume2
- Treatment
- Increasing N supplye1
- Outcome
- shoot/root ratio of dry weighte1
- Direction
- increasee1
Not reportedComparator
Verbatim
e1“Increasing N supply changes root growth as follows: decline in root dry matter, increase in shoot/root ratio of dry weight, decrease in number of seminal roots, shortening of axes and more laterals, increase in diameter of the laterals and less significantly of the main roots, increase in density of laterals, decline in root surface area”
e2“The old T. aestivum cultivars had more seminal roots”
Title
B. Feil; G. Geisler Journal of Agronomy and Crop Science 1988. doi:10.1111/j.1439-037x.1988.tb00666.x
Other claims from this paper (13)
- Association Root growth did not differ significantly between old and new winter wheat cultivars.
- Association Old wheat cultivars had more seminal roots.
- Association The longest roots of modern wheat cultivars penetrated into deeper layers of the substrate.
- Intervention effect Increasing N supply declined root dry matter.
- Intervention effect Increasing N supply decreased the number of seminal roots.
- Intervention effect Increasing N supply shortened the axes of wheat roots.
- Intervention effect Increasing N supply produced more laterals.
- Intervention effect Increasing N supply increased the diameter of the laterals.
- Intervention effect Increasing N supply increased the density of laterals.
- Intervention effect Increasing N supply declined the root surface area.
- Intervention effect Increasing N supply affected the number of root apices only to a very small degree.
- Association Modern wheat cultivars were not superior to old cultivars in tolerating toxic concentrations of NH 4 NO 3.
- Association Old wheat cultivars were not better adapted to low N fertilization.