Indicators of quality introduction three species of Tamarisk in central Russia

On the territory of the collection of Central Asia of the Main Botanical Garden of the Russian Academy of Sciences (Moscow) in conditions of open soil during the growing season of 2017. The dynamics of shoot growth and the content of the sum of chlorophylls a + b in introduced Tamarixes of three species were studied: Tamarix ramasissima Ledeb. Tamarix litvinovii Gorschk. Tamarix hohenackeri Bunge. It is shown that the main maxima of the accumulation of photosynthetic pigments were recorded in the middle of June and the first ten days of July. Depending on the type of tamarix. the decrease in the chlorophyll content was accompanied by an increase in the length of the shoot. The species differences are highly reliable, both in the accumulation of pigments in T. ramasissima and T. hohenackeri, and in the dynamics of growth processes in all three species of tamaricks. Il est établi que les trois espèces ont un haut degré de plasticité face à des conditions de croissance anormales. The used approaches can be proposed as physiological and botanical indicators of quality of introduction.