The Structure of the Variability of Morphological Features Agrostis diluta Kurcz
The structure of the variability of morphological features valuable and fodder grass Agrostis diluta in the Central Yakutia (Namsky and Nyurbinsky areas) in different years of observations (2007-2013). We conducted analysis of the structure of variability of 30 morphological features of species. We identified four groups of features on the ratio of the total variability and the coefficient of determination: biological, eco-biological, ecological and taxonomic indicators. Years of research have shown that the structure of the variability of morphological features form as a whole is not affected by weather conditions (hydrothermal coefficient). It was identified 7 of biological features-indicator (23.3 % of the studied traits): the height of the individual, sheath length 3 upper escape leaves, inflorescence height, number and length of the maximum branch of bottom branch inflorescences. These features of middle and high levels of variability and high agreed variability are key agreed and characterize a common habit and vital status of individuals and the whole coenopopulations. Constant environmental indicators are 3 features (10 %), eco-biological indicators - 2 (6.7 %), taxonomic - 11 (36.7 %), the remaining 7 (23.3 %) features of change the levels of variability every year. We spent a ranking point state coenopopulations Agrostis diluta using the most significant features: biological, eco-biological and ecological. Identified features-indicator can be used for different tasks, primarily for initial rapid assessment of the status and long-term monitoring coenopopulations of Agrostis diluta.