IMPROVING GRAFTING EFFICIENCY FROM Citrus reticulata BUDS  ON Citrus sinensis ROOTSTOCKS USING NAPHTHALENEACETIC ACID  AND 6- BENZYLAMINOPURINE

Nguyễn Ngọc Diệp; Trần Thị Thanh Hiền

doi:10.34238/tnu-jst.12394

IMPROVING GRAFTING EFFICIENCY FROM Citrus reticulata BUDS ON Citrus sinensis ROOTSTOCKS USING NAPHTHALENEACETIC ACID AND 6- BENZYLAMINOPURINE

About this article

Received: 26/03/25 Revised: 17/07/25 Published: 17/07/25

Authors

1. Nguyen Ngoc Diep, Binh Chanh High School
2. Tran Thi Thanh Hien , University of Science - Viet Nam National University

Abstract

The research focused on studying the effects of 1-Napthaleneacetic acid and 6-Benzylaminopurine on the formation of grafted plants from Citrus reticulatabuds onto Citrus sinensisrootstocks, by budgrafting technique and investigating the formation of the grafted area, then, to apply 1-Napthaleneacetic acid and 6-Benzylaminopurine individually or in combination to the grafted position. The results showed that the graft was formed and linked to the rootstock on day 15, and the shoots re-established growth on day 20. When 1-Napthaleneacetic acid and 6-Benzylaminopurine were treated separately at different concentrations, the formation of the grafted area (corresponding to the time of shoot emergence) occurred earlier in the 1-1-Napthaleneacetic treatment (0.5 or 1 mg.L^-1) (on day 10) compared to the control and 6-Benzylaminopurine treatments (on day 15). The number of re-growth shoots obtained in the treatment with 1-Napthaleneacetic acid 1 mg.L^-¹ or 6-Benzylaminopurine 10 mg.L^-1 with a grafting success rate of 82.4% and 75.4% was higher than that of the control treatment (63.80%). The combined spray treatment of 1-Napthaleneacetic acid 1 mg.L^-1 + 6-Benzylaminopurine 5 mg.L-¹ was more effective than the control and other treatments in terms of bud burst time, shoot length and increased the grafting success rate to 94.60 % on day 30. The parameters of respiration intensity and plant growth regulators activity were also monitored and discussed in this study.

Keywords

Citrus reticulata; Citrus sinensis; Grafted plant; 6-benzylaminopurine; 1-Naphthaleneacetic acid

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DOI: https://doi.org/10.34238/tnu-jst.12394

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