Skip to main navigation menu Skip to main content Skip to site footer

Vol. 4 No. 2 (2005)

Articles

THE CONSEQUENT EFFECT OF GROWTH RETARDANTS ON THE GROWTH AND DEVELOPMENT OF Tibouchina urvilleana Cogn. SHOOTS IN VITRO

Submitted: August 26, 2021
Published: 2005-12-31

Abstract

The consequent effect of growth retardants: paclobutrazol – 0.1, 0.5, 1, 5 mg l-1, flurprimidol – 0.1, 1, 5 mg l-1, chlorocholine chloride (CCC) – 5, 50 mg l-1 on the growth and development of Tibouchina urvilleana Cogn. in vitro was examined. Paclobutrazol at concentration of 1 or 5 mg l-1 and flurprimidol at 5 mg l-1 inhibited the growth of shoots significantly. It was noted that shoots originating from these media had thicker, straighter stems and shorter internodes. The stimulating influence of CCC at 5 mg l-1 on the elongation of the main shoot was observed. Axillary shoots formation was the best when shoots were derived from the medium supplemented with flurprimidol 1 mg l-1. Paclobutrazol at 0.5 and 1 mg l-1 and flurprimidol at 5 mg l-1 influenced the formation and fresh weight of roots increase, but flurprimidol was more effective. Growth retardants (except paclobutrazol at 5 mg l-1) applied in the earlier passage stimulated elongation of roots.

References

Abdullach T., Malek A. A., Ahmed S. H., 1988. Chemical manipulation of flowering in potted Melastoma decemfidum and Tibouchina semidecandra. Acta Hort. 454, 297–301.
Ben J., Poniedziałek W., 1994. Effect of paclobutrazol on certain properties of fruits of the apple cvs. Jonagold and Gloster. Folia Hort. 6, 1, 73–81.
Gent M. P. N., 1995. Paclobutrazol or uniconazol applied early in the previous season promotes flowering of field-grown Rhododendron and Kalmia. J. Plant Growth Regul. 14, 4, 205–210.
Johansen I. E., Findsen S., Andersen A. S., 1999. Propagation, growth, retardation, flower induction, and postproduction performance of Tibouchina urvilleana (DC.) Cogn. Gartenbauwissenschaft 64, 5, 200–205.
Larsen R. U., Lieth J. H., 1993. Shoot elongation retardation owing to daminozide in chrysanthemum: I. Modeling single applications. Scientia Hort. 1–2, 109–125.
Murashige T., Skoog F., 1962. A revised medium for rapid growth and bioassays with tobacco tissue cultures. Physiol. Plant. 15, 473–497.
Novello V., Roberts A. V., 1992. Effects of paclobutrazol and reduced humidity on stomatal conductance of micropropagated grapevines. Acta Hort. 319, 65–70.
Oosthuizen J. H., Froneman I. J., Roe D. J., 1995. Long-term effect of growth retardants and pruning on growth, yield and fruit quality of litchi (Litchi chinensis Sonn.) trees. J. South. African Hortic. Sci. 5, 2, 61–63.
Roberts A. V., Walker S., Horan I., Smith E. F., Mottley J., 1992. The effect of growth retardants, humidity and lighting at stage III on stage IV of micropropagation in chrysanthemum and rose. Acta Hort. 319, 153–158.
Ruter J. M., 1994. Growth and landscape establishment of Pyracantha and Juniperus after application of paclobutrazol. HortScience 29, 11, 1318–1320.
Smith E. F., Gribaudo I., Roberts A. V., Mottley J., 1992. Paclobutrazol and reduced humidity improve resistance of micropropagated grapevine to wilting. HortScience 27, 111–113.
Ziv M., 1992. The use of growth retardants for the regulation and acclimatization of in vitro plants. Proceed. of the 14 Intern. Conf. on Plant Growth Subst., Amsterdam, 21–26 July, 199, 809–817.

Downloads

Download data is not yet available.

Most read articles by the same author(s)

1 2 > >> 

Similar Articles

<< < 23 24 25 26 27 28 29 30 31 32 > >> 

You may also start an advanced similarity search for this article.