Data from: Is Poa annua a skin-changer? Annual-perennial life history shift enables the species to conquer Antarctica

Dataset comprising of morphological features of Poa annua specimens from different populations, that were grown in ex-situ simulation of antarctic conditions to study P. annua ability to live a perennial lifestyle.Data was prepared and used for publication"Is Poa annua a skin-changer? Annual-perennial life history shift enables the species to conquer Antarctica" by Rudak A, Galera H and Wódkiewicz M. 2025.Table "All Measurments" is main raw data file that includes all measuments that were done as a part of the experiment. Plants were grown for two vegetative antarctic seasons with one period of simulated antarctic winter between them,Ident_pop - There are nine different populations (8 populations from seeds collected in 2015 and one population from Antarctica from seeds collected in 2010)variant - one_year means that the plant was harvested and measured after one vegetative season, and two_year means that the plant was harvested and measured after two vegetative seasonsStudied traits included in table:adv_roots - is a binary factor whether adventitious roots were noticed in plantheight - height of aboveground part of the plant (in cm)dry_above_biomass - weight of dried aboveground biomass (in g)biomass_allo - Is a biomass allocation ratio between dry aboveground and dried belowground biomass of the plantplant_arch - is a ratio of height of the plant to largest chord of ellipsoid being an approximation of plant's shape from above view - it was measured using photography analyzed in ImageJ software.shoots - number of all shoots of the plantflower_day - first day of observed flowering counting from germinationTable "Values of post hoc Tukey test" consists of all post-hoc Tukey grouping values between studied populations in both variants.