The quantitative effect of temperature and light intensity at growth in Origanum onites L.

Abstract

The study was aimed to define the relationships between temperature, light intensity and growth parameters. Namely, net assimilation rate, relative growth rate, leaf weight ratio, leaf area ratio and specific leaf area for oregano ( Origanum onites L.). The quantitative effects of temperature and light intensity on growth parameters were examined in greenhouse-grown oregano plants. All equations produced for growth parameters were derived as affected by temperature. Growth parameters were not affected by light intensity. As a result of ANOVA and regression analysis, it was found that, there was close relationship between actual and predicted growth parameters. The regression coefficients (R(2)) of the produced equations for growth parameters changed from R(2) = 0.93 ( specific leaf area) to R(2) = 0.97 (net assimilation rate and leaf area ratio).