Performance of Hypocotyl Grafting of Walnut Under Uncontrolled Temperature Conditions

Gandev, S.; Dzhuvinov, V.

doi:10.17660/actahortic.2005.705.48

Cited by 3 publications

(4 citation statements)

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“…The successfully propagated plants are put for adaptation in a shaded place for 2-3 weeks, after which are taken in the open. Gandev and Dzhuvinov (2006) reported that they obtained 83% of survival rate by that grafting method.…”

Section: Discussionmentioning

confidence: 99%

“…According to Lagerstedt and Roberts (1972) grafting in the open could be unsuccessful due to low temperatures after grafting, which make difficult or compromise good callus formation. Gandev and Dzhuvinov (2006) established that when growing walnut in the open under the conditions of South Bulgaria, temperature variation during days and nights decreases the percentage of the survival rate. That is the reason why the great difference between the day and night temperatures in the West European countries makes the survival of grafted tree difficult in the open.…”

Section: Discussionmentioning

confidence: 99%

“…In the recent years the method gained greater importance (Vahdati and Zareie, 2006;Gandev and Dzhuvinov, 2006;Gandev, 2008). Potted seedling rootstocks are used in that method.…”

Section: Discussionmentioning

confidence: 99%

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State-of-the-art and Problems of Walnut Propagation Methods

Gandev

2015

AGR

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At present budding and grafting are the most widely used approaches in the production of grafted walnut trees. Poor callus formation in walnut makes it difficult to propagate. Walnut propagation by cuttings is a method difficult to be realized. The presence of high concentration of phenolic compounds in its tissue and their oxidation, is the major reason of using micropropagation as a suitable method. The most commonly used technique is patch budding. Other used methods are bench grafting and hot callus. In the last years hot callus as a technique has been successfully used for propagation of walnut cultivars, but the height of the trees is not enough at the end of the season. A new walnut propagation method is called epicotyl grafting. All the methods of walnut propagation are discussed in the present paper.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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State-of-the-art and Problems of Walnut Propagation Methods

Gandev

2015

AGR

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“…In contrast, the modified bark grafting performed at mid-April showed the highest grafting success (100%) and survival percentage (96.3%). During the recent years, hypocotyl grafting technique was introduced in practice (Vahdati and Zareie, 2006;Gandev and Dzhuvinov, 2006). In this method, grafting takes place during vegetation with growing tip of soft wood cutting on cleft.…”

Section: Grafting and Budding Of Walnutmentioning

confidence: 99%

Development and extension of walnut propagation in Iran

Vahdati¹,

Aalifar²

2016

Acta Hortic.

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Persian walnut (Juglans regia L.) is widely grown in Iran, as the center of origin of this tree. Propagation of this species is very difficult compared to other fruit and nut trees. Different types of grafting (epicotyl grafting, side stub grafting, omega grafting, whip and tongue grafting, saddle or V grafting, patch budding, chip budding, shield budding and topworking) and tissue culture (propagation by micro shoots or somatic embryogenesis) techniques have been studied intensively in the last 25 years in Iran. In these studies, effect of grafting type and time under different conditions (greenhouse, outdoor and shade house) on callus quality, graft-take, survival and growth of the scions have been studied. Several experiments have been conducted on optimization of micro-propagation steps such as establishment, proliferation, rooting and acclimatization of walnut. Successful techniques have been taught to the growers and agricultural experts. As a result of these efforts, several walnut grafting nurseries and tissue culture labs have been established which propagate walnut cultivars and rootstocks commercially for local and international markets.

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