Mg(OEt)2 with spherical morphology is one of the most important precursors for the preparation of industrial Ziegler-Natta catalysts. In the present article, morphology evolution of Mg(OEt)2 particles is studied in the course of the synthesis. The morphology of Mg(OEt)2 particles is observed throughout the process by SEM. The results show that Mg(OEt)2 particles are formed through i) seed gener...

Structural differences such as abnormalities, damage and free spaces in seeds may affect germination. The aim of this study was to study the relationship between eggplant seed morphology and seed germination. Ten seed lots of the eggplant cultivar Embu were evaluated by X-ray image analysis and the germination test. Seed image analysis was performed by Image Pro Plus® software and the whole see...

The morphology of 11 species of the genus Vicia from Iran was studied using Scanning Electron Microscopy (SEM). The main pattern in seed coat sculpturing in the species was papillose, but the size and the number of side ribs in papillae and the density of papillae, were different in various species. Four morphological characters of seeds: relative hilum length and shape, relative position of th...

Introduction 86 Factors Affecting Longevity of Seeds 86 Seed Characteristics 86 Basic seed physiology 86 Seed morphology 88 Chemical composition 88 Seed maturity 89 Seed Handling Prior to Storage 89 Storage Environment 89 Moisture 89 Temperature 90 Atmosphere 91 Storage Facilities 92 Cold storage 92 Containers 92 Moisture Control 93 Storage Recommendation 93 Orthodox Seeds 93 Temperate-Recalcit...