1/21/2024 0 Comments Define stem grafting![]() A better understanding of rootstock scion interactions, endogenous growth substances, soil or climatic factors needs to be studied, which would facilitate efficient selection and use of rootstocks in the future. Transport of macro as well as micro molecules across long distances results in phenotypic variation shown by grafted plants, therefore grafting can be used to determine the pattern and rate of recurrence of this transport. ![]() Phytohormones, especially auxins regulate key events in graft union formation between the rootstock and scion, while others function to facilitate the signaling pathways. In order to avoid the incompatibility problems, it is important to predict the same at an early stage. Graft incompatibility occurs on account of a number of factors including of unfavorable physiological responses across the graft union, transmission of virus or phytoplasma and anatomical deformities of vascular tissue at the graft junction. For grafted trees compatibility between the rootstock/scion is the most essential factor for their better performance and longevity. Successful graft union formation involves a series of steps viz., lining up of vascular cambium, generation of a wound healing response, callus bridge formation, followed by vascular cambium formation and subsequent formation of the secondary xylem and phloem. Interaction between the rootstock and scion involves complex physiological-biochemical and molecular mechanisms. ![]() ![]() For the success of a grafting operation, rootstock and scion should essentially be closely related. A general prerequisite for successful grafting and long term survival of grafted plants is taxonomic proximity between the root stock and scion. Grafting is a common practice for vegetative propagation and trait improvement in horticultural plants. This website does a good job of explaining callusing and grafting to the fruit grower who wants the detailed version of how grafting working ![]()
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