Department of Biology Organizes a Training Course on Identifying Stomatal Types in Different Plant Species

The Department of Biology at the College of Education for Pure Sciences – University of Samarra organized a training course entitled: “Identification of Stomatal Types in Different Species of Monocotyledonous and Dicotyledonous Plants.” The course was delivered by Assistant Professor Dr. Sundus Hussein Alwan, Dr. Israa Abdul Majeed Abdul Kareem, and Assistant Lecturer Hussein Saher Hassan.

The course aimed to study stomatal types, which are considered a distinctive anatomical feature that helps differentiate between plant groups. Monocotyledonous plants are characterized by a “dumbbell-shaped” structure (such as grasses), whereas dicotyledonous plants are distinguished by a “kidney-shaped” structure with a reticulate arrangement.

The lecturers explained that stomatal types are among the most important taxonomic and anatomical characteristics used to distinguish plants. The distribution of stomata and the shape of the surrounding subsidiary cells vary depending on the plant type (monocot or dicot) as well as the environment in which the plant grows.

The course concluded with several recommendations, that the study of stomata should rely on the “stomatal index” and stomatal frequency. The stomatal index is considered the most accurate diagnostic method, as it is based on counting stomata and relates their number to the number of epidermal cells, thereby reducing the influence of environmental factors on the results.

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