Research Article

Anatomical and Histological Development of Graft Union in Hazelnut (Corylus avellana L.)

Volume: 12 Number: Özel Sayı October 29, 2023
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Anatomical and Histological Development of Graft Union in Hazelnut (Corylus avellana L.)

Abstract

Objective: This study was carried out to investigate the anatomical and histological development of the graft union in chip budding and whip grafting techniques in Tombul hazelnut (Corylus avellana L.) cultivar. Materials and Methods: One-year suckers (Corylus avellana L.) of Tombul ocaks were used as rootstock and scion material. Chip-budding and whip grafting were applied on one-year suckers. The grafted plants were kept for 28 days at 26-28 °C and 70-80% relative humidity conditions. The cross and longitudinal sections with a thickness of 12-20 microns taken from the graft union by a rotary microtome at various times after grafting were investigated microscopically. In the investigations, the condition of the callus tissues formed by the rootstock and the scion, the condition of the necrotic layers at the graft union, the union of the rootstock and the scion, the development of cambial differentiation and new vascular tissues, and establishment of the cambial continuity between the rootstock and the scion were evaluated. Results: It was observed that callus proliferation from rootstock and scion occurred slowly in the early stages of the union in two grafting techniques. In some grafting samples, callus proliferation was weak and insufficient in the early stages. The first cambial differentiations in callus tissues were observed in sections 18 days after grafting in two grafting techniques. Cambial continuity between rootstock and scion was established 26 days after grafting in chip budding and 26-32 days after grafting in whip grafting. In the sections taken 52 days after grafting and in the following periods, it was observed that the graft partners were in vascular relationship in the grafts. The new vascular tissues at the graft union developed more rapidly in whip grafting than in chip budding. Conclusion: The formation of the graft union was successful in the grafting techniques with all its stages. It has been evaluated that the amount of callus tissue proliferated in the early period after grafting directs the subsequent development of the union. For this reason, it is thought that it would be beneficial to develop practices and methods that encourage callus proliferation in the early stages of hazelnut grafting studies. Anatomical and histological examinations in whip grafting revealed that rootstock and scion thickness very close to each other and well matching of the graft partners from cambial zones positively affect the development of the graft union.

Keywords

References

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Details

Primary Language

Turkish

Subjects

Horticultural Production

Journal Section

Research Article

Publication Date

October 29, 2023

Submission Date

March 14, 2023

Acceptance Date

September 29, 2023

Published in Issue

Year 1970 Volume: 12 Number: Özel Sayı

APA
Balta, F., & Şen, S. M. (2023). Fındıkta (Corylus avellana L.) Aşı Kaynaşmasının Anatomik ve Histolojik Gelişimi. Akademik Ziraat Dergisi, 12(Özel Sayı), 11-28. https://doi.org/10.29278/azd.1265025

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