Early changes in auxin and ethylene production in vine cuttings before adventitious rooting

✍ Scribed by Charles Moncousin; Jean-Michel Favre; Thomas Gaspar

• Publisher: Springer
• Year: 1989
• Tongue: English
• Weight: 360 KB
• Volume: 19
• Category: Article
• ISSN: 0167-6857
• DOI: 10.1007/bf00043350

✦ Synopsis

Node cuttings of 'in vitro' cultured grapevine were rooted in absence of any growth regulator, before the onset of the axillary bud. There were two peaks of ethylene production at 2 and 10-12h, well marked in the top and bottom portions of the cuttings for the former. The level of IAA increased in the basal portions of the cuttings only, from the 4th hour, and culminated at the 24th hour. The wound ethylene of the first rise might be initiating the sequence of reactions leading to root formation. The second ethylene rise might result from the beginning of the increase of the IAA level.