171: Біологія та екологія

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Genetic basis of awnednessin grasses
(2015) Navalikhina, Anastasiia; Antonyuk, Maksym; Ternovska, Tamara
Some representatives of grasses, such as rice, barley, oats, and wheat, have long needle-like elongations of lemma – awns. Genetic mechanisms of awns development control remain poorly understood. This article give a literature review on the awnedness control in rice, barley, and wheat. Due to these species relationship and evolutionary conservatism of developmental mechanisms, it is possible to apply principle of synteny to transfer existing data on rice and barley to a wheat. Thus, it is possible to find out the mechanisms of awns development and discovery the corresponding genes in wheat, which is important and necessary task.
Species Features of Tree Growth in Forest Phytocenosis Assoc. Convallario majali-Quercetum roboris at the Reserve "Lisnyky" of National Nature Park "Golosiivsky"
(2015) Vyshenska, Iryna
The study deals with the species difference in the growth rate of broad-leaved trees from association Convallario majali-Quercetum roboris. The ratio of tree growth in diameter to growth in height for different species is investigated. The relative growth rates of species could be relevant indicators for the growth processes in forest ecosystems. The role of species diversity and competitiveness as key factors in supporting of biomass and sustainability of forest plant communities is discussed.