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International Journal of Horticultural Science and Technology، جلد ۳، شماره ۲، صفحات ۱۶۷-۱۷۷
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| عنوان فارسی |
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| چکیده فارسی مقاله |
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| کلیدواژه‌های فارسی مقاله |
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| عنوان انگلیسی |
The histology of minigrafting of Persian walnut trees cv. chandler |
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| چکیده انگلیسی مقاله |
Compared to other techniques of propagation, grafting is the most successful and feasible technique for asexual propagation of walnut plants. There is little information about graft ::union:: formation in walnut. Therefore, the objective of this study was to evaluate histological events during graft ::union:: formation in Juglans regia L. cv. Chandler scions when minigrafted on the one-year-old seedlings. Cross and longitudinal sections of the graft ::union:: were taken for examining different stages of grafting process after 1, 14, 30, 60, 120, 180, 420 and 540 days of minigrafting. One day after grafting, brown necrotic layers were observed at the cut edges. The first callus cells were initiated from cambium layer of rootstock 14 days after grafting but there was weak connection between two parts. New vascular connections between rootstock and scion were observed 30 days after grafting . Vascular connections were increased in central parts of the graft ::union:: 60 days after grafting. In mid-summer (180 days after grafting), necrotic layer was almost disappeared in the central longitudinal sections but they were increased especially in the bark, callus and top parts of the graft ::union:: due to high temperature and low humidity. In 420 days after grafting, two parts were strongly connected by xylem vessels, but necrotic layer was still remained and observed in some parts. In 540 day after grafting which was coincided with the end of second growing season, two parts were tightly connected to each other and necrotic layer disappeared in most of cross and longitudinal sections. |
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| نویسندگان مقاله |
مینا فارسی |
department of horticulture, college of agriculture and natural resources, university of tehran, karaj, iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)
محمدرضا فتاحی مقدم | mohammad reza
department of horticulture, college of agriculture and natural resources, university of tehran, karaj, iran
سازمان اصلی تایید شده: دانشگاه تهران (Tehran university)
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| نشانی اینترنتی |
http://ijhst.ut.ac.ir/article_62916_a6f2266f629936703532d9aac55c94d8.pdf |
| فایل مقاله |
اشکال در دسترسی به فایل - ./files/site1/rds_journals/413/article-413-428467.pdf |
| کد مقاله (doi) |
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| زبان مقاله منتشر شده |
en |
| موضوعات مقاله منتشر شده |
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| نوع مقاله منتشر شده |
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