Changes in Polyphenol Oxidase Activity During Rooting of Hardwood Cuttings in Three Grape Rootstocks Under Indian Conditions
AbstractPolyphenol oxidase (PPO) activity was investigated during rooting in cuttings from the rootstocks Dog ridge, 110 R
and St. George, belonging to different Vitis species. Enzyme activity and rooting ability were analysed. Significant
differences were found in PPO activity among different rootstocks, with Dog ridge and 110 R having the highest PPO
activity during the initial period of planting, followed by a decrease in enzyme activity. In St. George, the enzyme
activity was least during the initial periods, but it increased throughout the experiment. The initiation of rooting
primordia was observed until 60 to 90 days after planting in Dog ridge and 110 R rootstocks, while it was observed
120 days after planting in St. George, suggesting differences in the rooting behaviour of the rootstocks. The status
of various biochemical components of the mother vines, such as total phenols, reducing sugars, carbohydrates,
nitrogen, C:N ratio, etc. were analysed to investigate the influence of these constituents on the rooting ability of the
rootstocks apart from PPO activity.
A copyright form will be e-mailed to the corresponding author when the manuscript has been accepted for publication.
In principle, the Author agrees to the following when he/she signes the copyright agreement:
I hereby assign to the SOUTH AFRICAN SOCIETY FOR ENOLOGY AND VITICULTURE (SASEV) the copyright of the text, tables, figures, supplementary material, illustrations and other information (the Material) submitted with the manuscript to be published in SOUTH AFRICAN JOURNAL OF ENOLOGY AND VITICULTURE (SAJEV) (the "Article"). The copyright becomes effective from the date the Article has been accepted for publication in SAJEV.
This is an open access journal, and the authors and journal should be properly acknowledged, when works are cited.
Author's may use the publishers version for teaching purposes, in books, theses, dissertations, conferences and conference papers.
A copy of the authors' publishers version may also be hosted on the following websites:
- Non-commercial personal webpage or blog.
- Institutional webpage.
- Authors Institutional Repository.
The following notice should accompany such a posting on the website: This is an electronic version of an article published in SAJEV, Volume XXX, number XXX, pages XXX - XXX, DOI. Authors should also supply a hyperlink to the original paper or indicate where the original paper (www.journals.ac.za/index.php/sajev/) may be found.
Authors publishers version, affiliated with the Stellenbosch University will be automatically deposited in the University's Institutional Repository SUNScholar.
Articles as a whole, may not be re-published with another journal.
The following license applies:
Attribution CC BY-NC-ND 4.0