Modern techniques for walnut propagation - hot callus, epicotyl grafting and water nutrient solution system

Three modern techniques for walnut propagation are considered - hot callus, epicotyl grafting and water nutrient solution system. The presented results aim to compare the above methods, as well as to give the relevant conclusions and recommendations for use by manufacturers.

 The experiments were conducted in the period 2015-2021 at the Institute of Fruit Growing, Bulgaria. Plants of common walnut (Juglans regia L.) for rootstocks and the Bulgarian walnut variety ‘’Izvor 10’’ for scions were used. At this stage of the study, the results show that the percentage of callus formation is different in the three methods of grafting. The average interception rate during the survey period was 85.5% for the hot callus method, 71.0% for epicotyl propagated plants and 37.5% for water nutrient solution system.

It can be concluded that propagation of walnut using the techniques of hot callus, epicotyl grafting and water nutrient solution system is possible. The most useful technique for practice is hot callus method.

Audience Take Away Notes: 

• Modern techniques for walnut propagation - hot callus, epicotyl grafting and water nutrient solution system
• Relevant conclusions and recommendations for use by manufacturers.