1. avocado Fruit trees(evergreen) D.faisal shraim Taqwa saleh

3. Larg berry fruit tree. The tree is evergreen, altough some varieties lose their leaves For a short time. It’s a tropical & subtropical,it does not tolerate freezing temperatures.. The more than 200 cultivars of cultivated avocado are classified into three distinct races: West Indian, Guatemalan, and Mexican. introduction

4. Avocado fruits (Persea americana): A. West Indian cultivar, B. Guatemalan cultivar ('Hass'), and C. Mexican x Guatemalan cultivar ('Fuerte').

5. Body of tree: Root: fibrous root Shoot can grows to 20meter

6. shoot

7. alternately arranged leaves 12 -25 cm (4.7–9.8 in) long. Variable in shape. They are often hairy and reddish when young, then become smooth, leathery and dark green when mature. Leaves

8. The flowers are perfect(complet), greenish yellow, 5– 10 mm (0.2– 0.4 in) wide. Flowers

10. Pollinatio n The species is only partially able to self-pollinate because of dichogamy in its flowering. So Cross-pollination usually increases fruit set

11. Avocado cultivars

13. pollenation

15. Growth stage of development

16. The pear-shaped fruit is 7–20 cm (2.8– 7.9 in) long, weighs between 100 and 1,000 g. and has a large central seed, 5–6.4 cm (2.0–2.5 in) long. Fruit

17. Nutrition value

18. seed

19. Propagation Avocados can be propagated by seed, taking roughly four to six years to bear fruit, although in some cases seedlings can take 10 years to come into bearing.

20. grafting

21. budding

22. rootstocks Prime quality varieties are therefore propagated by grafting to rootstocks that are propagated by seed or by layering. After about a year of growing in a greenhouse, the young rootstocks are ready to be grafted.

23. soil Do not tolerant flooding or poorly draind and well aerated soil

24. Harvest and postharvest Like the banana, the avocado is a climacteric fruit, which matures on the tree, but ripens off the tree it picked hard and green and kept in coolers at 3.3 to 5.6 °C until they reach their final destination

26. disorder in avocado

27. Abrasion Damage

28. Anthracnose

29. Dothiorella Stem End RotLasiodioplodia Stem End Rot

30. Any qustion??