Chara globularis, Thuil., C.

Milovanović, Vanja, Popović, Slađana, Predojević, Dragana, Simić, Gordana Subakov, Ržaničanin, Ana, Sekulić, Jasmina Šinžar & Trbojević, Ivana, 2022, Oospore features among morphologically similar and closely related charophyte species: consistency and variability, Cryptogamie, Algologie 20 (12), pp. 189-200 : 193

COMPARATIVE ANALYSIS OF OOSPORES OF CHARA GLOBULARIS AND CHARA “ CONNIVENS ”

Comparing measured oospore parameters between samples of C. globularis from all localities and C. “ connivens ” ( Fig. 5A ), it is clear that almost all parameters correlated with Chara globularis – meaning that higher values of these oospore parameters are observed in this species. Only ANI showed positive correlation with Chara “ connivens ”. This analysis described 54% variability in our data, and was significant (F = 18.4, P = 0.002).

The other analysis also compared measured oospore parameters between samples of C. globularis and C. “ connivens ”, but it was conducted with data for Chara globularis from the DP locality only ( Fig. 5B ), because in this locality C. globularis and C. “ connivens ” were found together and the morphological similarity between sterile specimens was extremely high. Results of this analysis were almost the same as in the one above, only the ISI index showed no clear correlation with either of the species. This analysis described 72% variability in the data and was also significant (F = 24.6, P = 0.002). Presented analyses ( Fig. 5A, B ) confirm that although intraspecific (interpopulation) variability of oospore parameters exist in C.globularis ,when compared to C. “ conniven s”, the difference between species is clear and uniform.

Figures

FIG. 5. — The relationship between oospore parameters of Chara “connivens” P.Salzmann ex A.Braun and Chara globularis Thuil., and nominal variable referring to these two species: A, considering all sampling localities; B, referring to these two species considering Dulin pond locality only. Redundancy analysis (RDA). Abbreviations: see Material and methods.