COMPARATIVE MORPHOLOGICAL AND ANATOMICAL STUDY FOR SEEDS OF SOME PLANT SPECIES OF WILD DICOTS GROWN IN SEFFEN MOUNTAIN – ERBIL

Abstract

Four types of seeds belong to four genera four families have studied which are from the wild types of Dicots growing in the study area at the mountain in of Seffen in Erbil province. The study included morphological and anatomy characterization for seeds in Shape, Color, Dimension, Surface configuration, Site of hilum and its shapes , Type of embryo and its shape and type, Radical and Dicots shapes and its dimensions, Thickness of seed coat and number of layer and thickness and shape of cells in each layer, and location of storage nuttition whether in endsperm or in the emberyo tissue, The fruits have been characterized by (form, type, dimensions, number of seed in every one). The results of morphological study for seeds showed wide variation among studying species , the results (Ovoid, Obovate, Pyriform, Semi spherical shape) and the color of seeds were(Reddish brown – Dark brown, Yellowish Brown, Yellowish Green), and type of Surface decoration were (granular, Membrane with papillae, Rough with veins tangled) The high average for length of seed was 2.8 mm in Salvia Spinosa and less length was (1.5) mm in Helianthemum salicifolium. The high width was 2.75 in Salvia Spinosa and the less width was (1.1) mm in Helianthemum salicifolium. The results of anatomy showed wide difference between studied species in thickness of seed coat a high thickness which (70) μm in Alyssum strigosum and the thicness one was (37.5) μm in Helianthemum salicifolium, the histological section for seed coat has cuticule layer for species (Melilotus alba, Salvia Spinosa) with difference in thickness between species and was not found in another studding species, Gelatinous or semi gelatinous layer founded in species (Helianthemum salicifolium, Alyssum strigosum) and was not found in another species. The results of manual anatomy for seeds and embryo present the Foliate type are showed in all studied species, the embryo shape was (Oblong, Elliptic, Sub circular – elliptic)المقدمة