Development of Protocol for Propagation of Zanthoxylum alatum through Mound Layering
DOI:
https://doi.org/10.36808/if/2021/v147i8/155403Keywords:
Girdling, Indole Butyric Acid, Mound Layering, Stooling, Zanthoxylum alatum.Abstract
Zanthoxylum alatum (commonly known as Timur, Timru, Tomar) is an important medicinal plant found in the warmer valleys of the Himalayas, parts of north-east and eastern India. Propagation through shoot cuttings is one of the most common methods of vegetative propagation in many woody species. This study was initiated to investigate the potential of mound layering as an alternative vegetative propagation method for propagating many hard to root plants without requiring expensive equipment and it has been successfully used in horticulture on many species. The simplicity of this method makes it fascinating to test it for multiplication of Z. alatum. Results from wounding was found to have a significant (p≤0.05) effect on bud sprout, number of shoots per stools, shoot length and diameter, rooting per cent, number of roots, root length and per cent survival of the rooted shoots during spring season. Girdling proved to be the most effective method of wounding that yielded greatest number of shoots, rooting per cent, shoot length, shoot diameter, number of roots, root length and per cent survival. Furthermore, girdling method resulted in better survival of rooted shoots (65.20%) than random wounding (49.76%). Among IBA treatments, greater survival rate was achieved with 6000 ppm IBA (48.71%) in comparison with control (42.74%).  It was therefore felt necessary to develop protocols for vegetative propagation of this species through cuttings and mound layering with the goal of working out multiplication rates by both methods.
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