الفهرس 
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Abstract
Parasitic flowering plants are totally achlorophyllous, non photosynthetic and obtain all their water and nutrients from host xylem and phloem. Parasitic plants can be classified as stem (Cuscuta) or root parasites (Orobanche), depending on the location of haustoria through which the parasite extracts resources, water, nutrients, and carbon from the host.
This study was investigated cytologically, anatomically and biochemically including total seed proteins and protein profiles as well as chlorophyll contents ob both hosts and parasites and pollen analysis of all parasites.
All parasites were diploid in cytological study, and there were a variety of chromosomal abnormalities were observed. The pollen abortion assay, the anatomical investigation, the total seed proteins profile, and estimation of photosynthetic pigments had a variation that can help in identification and classification of these species.