ISSN:
1615-6110
Keywords:
Angiosperms
;
Solanaceae
;
Lycopersicon esculentum
;
Lateral root
;
root primordium
;
roots in vitro
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Root axes of tomato (Lycopersicon esculentum) were cultured in vitro in three different concentrations of sucrose in order to vary their growth rate. Lateral root growth and the initiation of lateral root primordia were studied on each group of axes. Various aspects of primordium initiation, positioning, and emergence were quantified with a view to discovering variable and constant features of these processes. Variable parameters were the rate and frequency of root primordium emergence. Constant parameters, at least under the prevailing conditions, were the spacing between successive laterals and primordia, and the position of the primordia in relation to the vascular system. A model of primordium initiation is presented which combines controls determined by the divisional history of the potential primordium cell and by the vascular pattern.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00936340
