Premium
The influence of expanding leaves and the reproductive stem apex on apical dominance in Lolium multiflorum
Author(s) -
LAIDLAW A. SCOTT,
BERRIE ALEX M. M.
Publication year - 1974
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1974.tb01487.x
Subject(s) - biology , apical dominance , tiller (botany) , inflorescence , apex (geometry) , lolium multiflorum , dominance (genetics) , main stem , botany , vegetative reproduction , agronomy , lolium , poaceae , shoot , biochemistry , gene
SUMMARY In vegetative plants of Lolium multiflorum removal of the two youngest emerging leaves resulted in increased expansion of basal tiller buds. A similar release of inhibition of tiller buds took place if the floriferous apex was removed. The surgical procedures did not affect the response. Under conditions of N‐deficiency total tiller number was reduced but on removal of the apex the deficient plants showed an increased initial rate of tiller bud expansion. Apical dominance during the vegetative stage of growth in this grass was apparently due to the expanding leaves in the vegetative apex, but in the flowering plant the control was exerted by the inflorescence or the elongating stem.