Seed germination in sedges: a short review
Seed germination in sedges: a short reviewFive patterns of seed germination in the sedges of the genusCarexare presented, based on the literature data and the results of the authors' own research. They include the pattern ofC. acutiformis, C. arenaria, C. remota, C. flavaandC. communis. These patterns were constructed on the basis of seed specific requirements for development, such as stratification, temperature, dormancy and time of germination. Majority of sedges follow the pattern ofC. acutiformisorC. remota. In both cases, stratification and either high or low temperature are essential for seed germination. Seeds that start to germinate early (C. remotapattern) are characterized by the absence of the distinct peaks of germination, as opposed to theC. acutiformispattern with the germination peak in March. Our long-term investigations, conducted on the group of individuals in controlled conditions, revealed significant differences in seed size and the ability of seeds to germinate depending on the age of mother plants. We postulate that mother plant age is a new factor that should be considered in the construction of seed germination patterns.