Principles Op Plant Taxonomy

Principles of Plant Taxonomy , VI

Chemical characters in plant taxonomy: some possibilities and limitations.

Chemical plant taxonomy or chemotaxonomy of plants may be defined as a sciertific investigation of the potentialities of chemical characters for the study of problems of plant taxonomy and plant phylogeny. Plant taxonomy is the science of delimiting, describing and naming appropriately taxat and arranging them in a natural system of plants. Principles of chemotaxonomy were elaborated in the pas...

A revision on the taxonomy of the genus Pseudocercospora

Bakhshi. M. 2019. A revision on the taxonomy of the genus Pseudocercospora. Plant Pathology Science 8(1):1-14. DOI: 10.2982/PPS.8.1.1.    Pseudocercospora species are plant pathogenic fungi occurring on a wide range of herbaceous and woody plants. Since its early description of the genus, its taxonomy has always been challenging. In recent years, Multi-gene DNA sequence data have provided sig...

Some Observations on Plant Karyology and Investigation Methods

Karyology deals with the structure of cell nuclei, especially chromosomes. Cytology dealing with the study of cells in terms of structure also, function is known nowadays to mean only the study of chromosomes or nucleus and made synonymous with karyology wrongly. Cytotaxonomy means the application of cytological data to taxonomy. Cytotaxonomy studies the morphological and cytological characteri...

Quality of Residents’ Promotion Exams before & after Educational Intervention in 2010-2011

Introduction: Resident promotion exams are considered one of the most important summative exams in residency period that allow residents to proceed to a higher grade. Multiple choice questions are the most common and objective test in medical science education. Therefore, finding methods to improve quality of exams, particularly in specialty programs, is important. The aim of this study is to d...