The effect of indole-3-acetylaspartic acid on adventitious root formation on bean cuttings

✍ Scribed by Eva Zelená; Květa Fuksová

• Publisher: Springer Netherlands
• Year: 1991
• Tongue: English
• Weight: 271 KB
• Volume: 10
• Category: Article
• ISSN: 0167-6903
• DOI: 10.1007/bf00035133

✦ Synopsis

The influence of indole-3-acetylaspartic acid (IAAsp) on rooting of stem cuttings from bean plants (Phaseolus vulgaris L.) of different ages, cultivated at different temperatures (17 °, 21 ° and 25 °C) was studied and compared to that of indole-3-acetic acid (IAA) . At a concentration of 10 -" M, IAAsp only nonsignificantly stimulated adventitious root formation, approximately to the same level as IAA in all treatments . IAAsp at 5 x 10 -'M further enhanced rooting, by up 200% of control values, with little influence of temperature conditions and stock plant age . This concentration of IAA usually stimulated rooting more than the conjugate . The largest differences between the effects of IAAsp and IAA occured at the highest cultivation temperature of 25'C where stock plant age also influenced the response . The number of roots produced in comparison with the control, was enhanced from 350% on cuttings from the youngest plants to more than 600% on cuttings from the oldest . In contrast to the conjugate, 5 x 10 -'M IAA induced hypocotyl swelling and injury of the epidermis at the base of cuttings, in all treatments .