Ethylene and adventitious root formation in hypocotyl segments of etiolated mung-bean (Vigna radiata(L.) Wilczek) seedlings

✍ Scribed by D. J. Batten; M. G. Mullins

• Publisher: Springer-Verlag
• Year: 1978
• Tongue: English
• Weight: 366 KB
• Volume: 138
• Category: Article
• ISSN: 0032-0935
• DOI: 10.1007/bf00386810

✦ Synopsis

Rooting responses and ethylene production by hypocotyl cuttings from etiolated mung-bean seedlings treated with the auxins α-naphthaleneacetic acid, γ-(indole-3)-n-butyric acid (IBA) and 2,4,5-trichloro-phenoxypropionic acid were determined. There was no relationship between the abilities of the auxins to induce root formation and their capacities for inducing ethylene production. Studies with mixtures of 3-indoleacetic acid, a poor stimulator of rooting but an effective inducer of ethylene production, and IBA, an effective rooting stimulator but a poor inducer of ethylene production, exposure of cuttings to ethylene or (2-chloroethyl) phosphonic acid (Ethephon), hypobaric storage (150 mb) of treated cuttings, and exposure of auxin-treated cuttings to 7% CO2 also indicated that ethylene is not directly involved in initiation of adventitious roots in this plant material.