We have studied the effect of nitrogen supply on growth as well as relation
on adaptation to light interception of leek (Allium porrum L.,) hybrid Alita,
genotype of known genetic background. During the vegetative and generative
plant growth phases, besides genetic potential many factors affect their
productivity. The aim was to investigate genome expression dependent on
nitrogen nutrition and light interception. Nitrogen in correlation with light
availability has important effect on the growth of plants and the formation
of leaf area, what it is necessary for yield of dry matter. Investigation has
been done in open field grown leek commercial hybrid Alita (Allium porrum
L.,) to consider the way of its genotype response to correlation of light
interception and nitrogen nutrition. Investigated traits are leek crop
productivity, light interception and chemical analyses of plants. Leek crop
productivity was determined through the dry matter production, leaf area
development and light interception. Analyses of leek plants comprehended
chemical determination and calculation of total nitrogen concentration,
nitrogen critical concentration in dry matter, nitrogen demand and, nitrogen
uptake in leek crop. Correlation among investigated parameters was assigned
to comprehensive hypothetical model of growth and productivity of leek crop
grown at open field.It was shown that for nitrogen uptake (Nu), nitrogen
demand (ND) and total nitrogen concentration (Nt) parameters variants of
mineral nutrition plays significant role (pNu=0.002; pND=0.045; pNt=0.011).
Obtained results indicated that correlation of nitrogen and light
interception could be used as criteria in plant breeding.
Nitrogen supply and physical disturbance shapes Arctic stream nitrogen uptake through effects on metabolic activity
