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The goal of the study was to check if the shape-describing characters, calculated as ratios of the morphological measured traits are more stable, compared to the latter, and can be treated as independent on environmental conditions. The test was based on the example of leaves of Salix herbacea and Betula nana. The individuals of the two populations of S. herbacea from Tatra Mts. were divided into...
The study, covering analysis of the variation in the intensity of septoria leaf spot, made use of the results obtained in Post-registration Variety Testing experiments carried out in Lower Silesia. Of these experiments, eight locations characterized by diverse soil conditions were selected. The analysis regarded a three-year period of cultivation, spanning 2004–2006, of eleven winter wheat cultivars...
W wielu doświadczeniach wykazano, że rozwój aparatów szparkowych jest kontrolowany przez sygnały środowiskowe takie jak wilgotność powietrza, natężenie światła czy stężenie dwutlenku węgla. Mniej prac poświęcono wpływowi jaki na morfogenezę aparatów szparkowych wywiera deficyt wody w podłożu i są to najczęściej doniesienia niejednoznaczne lub nawet sprzeczne. W doświadczeniu określono zmiany zachodzące...
The objective of this study was to evaluate the effect of different CO2 concentrations on carbohydrate, chlorophyll contents and net photosynthetic productivity in radish (Raphanus sativus L., cv. Zara) leaves. Plants were exposed to 350, 700, 1,500 and 3,000 ppm atmospheric CO2 concentrations over ten days. Day/ night temperature was 24°C/17°C and photoperiod was 16 h. Carbohydrate (fructose, glucose,...
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