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Podczas działania niskich temperatur na rośliny, aktywność poszczególnych enzymów in vivo znacznie odbiega od wartości uzyskanych in vitro w wyższej standardowej temperaturze. W związku z tym celem pracy było ustalenie wpływu temperatury pomiaru (5 lub 20°C) na aktywność enzymów rozkładających nadtlenek wodoru - peroksydazy askorbinianowej (APX) i katalazy (CAT). Badano aktywność w liściach roślin...
Procesy wzrostu i rozwoju roślin są regulowane przez hormony roślinne jak również przez czynniki środowiskowe np. temperaturę. Celem badań było wyznaczenie temperaturowej zależności aktywności oddychania komórek segmentów koleoptyli Zea mays L., indukowanego przez IAA i 4-Cl-IAA. Badania przeprowadzono na 10 mm, etiolowanych segmentach koleoptyli kukurydzy z których usunięto pierwszy liść. Pomiary...
Experiment with silage maize was established in 2002. Two hybrids were compared: early hybrid Birko (FAO 210) and middle early hybrid Etendard (FAO 260). Sum of effective temperatures was observed during vegetation period. There was confirmed significant dependence of sum of effective temperatures on dry matter production dynamic of silage maize. Based on study of this indicator is possible to assign...
Prediction of phenological development is crucial to the successful use of crop simulation in crop adaptation studies. Previous studies have shown existing predictive algorithms to be inadequate when applied to a broad range of cultivars and environments. The primary objective of the study was to quantify the temperature and photoperiod responses of the rates of development during emergence to tassel...
In cool-temperature climates, potential maize grain yields are variable and often small. Low temperature prolongs growth duration, reduces crop growth rate, and increases the risk of frost terminating grain filling prematurely. The objectives of this study were (1) to assess the performance of a radiation- and temperature-driven maize simulation model in a cool-temperate climate and (2) to modify...
Leaf area establishment is the main factor limiting the yield of maize (Zea mays L) in areas characterized by long cool springs such as in northern Europe. The objective of this research was therefore to study the influence of temperature on leaf area growth and development processes. Unlike most of the previous studies, it was conducted under field conditions and emphasized genetic variability for...
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