PHYSIOLOGICAL AND ANATOMICAL STUDIES ON SOME FACTORS AFFECTING PRODUCTIVITY AND NUTRITIONAL STATUS OF NAVEL ORANGE, PhD,Department of Horticulture, Faculty of Agriculture, Benha University, Egypt The influence of some bio and organic nutritive addenda on growth, productivity, fruit quality and nutritional status of Washington navel orange trees Effect of Potassium, Zinc and Boron on growth, yield and fruit quality of Keitt mango trees‎. (2008): Protoplast isolation and culture of Pyrus betulaefolia and P. communis Pear rootstocks . Using of Biotechnology in vitro propagation and development of some deciduous fruit Rootstocks . M.Sc. Thesis, Fac. of Agric., Benha Univ., Egypt. Effect of some Natural Coating Materials on Storability and Fruit Quality of Zaghloul Date Palm cv. under Cold Storage Partial Substitution of Chemical Fertilization of Canino Apricot by Bio and Organic Fertilization Effect of Feldspar and Bio- Fertilization on Growth, Productivity and Fruit Quality of Banana cv. Grande Naine Effect of Some Antioxidants and Nutrients Treatments on Vegetative Growth and Nutritional Status of Washington Navel Orange Trees The impact of bio-fertilization, plant extracts and potassium silicate on some fruiting aspects and fruit quality of "Le-Conte" pear trees Physiological Effect of Some Natural Extracts, Magnetized Water and GA3 on Four Citrus Rootstocks Seedlings Enhancing Productivity, Fruit Quality and Nutritional Status of ‘Washington’ Navel Orange Trees by Foliar Applications with GA and Amino Acids 3 Impact of different bagging types on preventing sunburn injury and quality improvement of Keitt mango fruits Effect of Some Thinning Practices on Yield and Fruit Quality of Sewi Date Palm Grown in Farafra Region Effectiveness of Different NPK Fertilization Sources on Growth, Nutritional Status, Productivity and Fruit Quality of Washington Navel Orange Trees Trails to Explain the Variations in Fruits Pulp Color of Citrus unshiu Based on SSR Marker Associated to Proton Pump Pre-isolation, isolation and regeneration protoplasts from leaf mesophyll of in vivo Malus domestica ‘Anna’ cv.