The effect of indole-3-acetylaspartic acid on adventitious root formation on bean cuttings |
| |
Authors: | Eva Zelená Květa Fuksová |
| |
Institution: | (1) Institute of Experimental Botany, Czechoslovak Academy of Sciences, Ke dvoru 16, CS-166 30 Praha 6, Czechoslovakia;(2) Institute of Nuclear Biology and Radiochemistry, Czechoslavak Academy of Sciences, Vídeská 1083, Praha 4, Czechoslovakia |
| |
Abstract: | 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 10–4 M, IAAsp only nonsignificantly stimulated adventitious root formation, approximately to the same level as IAA in all treatments. IAAsp at 5×10–4 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, 5×10–4 M IAA induced hypocotyl swelling and injury of the epidermis at the base of cuttings, in all treatments. |
| |
Keywords: | indole-3-acetylaspartic acid indole-3-acetic acid rooting bean cuttings |
本文献已被 SpringerLink 等数据库收录! |
|