فرزانه امین زاده
محمدرضا فتاحی مقدم
علی عبادی
داراب حسنی

Walnuts orchards in Iran are not uniform due to sexual propagation. Asexual propagation including minigrafting will lead to uniform orchards and nut production. To study the trend of grafting :::union::: formation in walnut some microscopic slides were prepared in different time after 'Serr' cultivar was minigrafted on seedlings. Different stages of grafting process including callus formation and development, necrotic layers deterioration, cambium differentiation and vascular tissues formation in samples were evaluated in ۳, ۷, ۱۰ weeks and ۶ and ۱۲ months after minigrafting. Results indicated that successful minigraft was observed after ۱۲ months in winter minigrafted seedlings.

ریزشاخه پیوندی, لایه های نکروزه, کالوس, کامبیوم و بافت آوندی