Response To The Growth Of Various Sizes Of The Diameter Of The Stem Stem Stem Bougenvil (bougainvillea Spectabilis Wiild.) Against The Administration Of Growth Regulators

Feb 28, 2025 by ADMIN 171 views

**Maximizing the Development of Bougainvillea Cuttings: The Role of Stem Diameter and Growth Regulatory Substances**

Introduction

Propagation of plants using cuttings is a popular method, but its success is heavily influenced by the availability of carbohydrates and plant growth hormones in cuttings. Providing growth regulators and selecting stem size is a crucial solution to increase the success of cuttings. This study investigates the effect of stem diameter and the administration of growth regulators on the growth of Bougainvillea Spectabilis Willd. cuttings.

Background

Bougainvillea is a popular ornamental plant known for its vibrant flowers and ability to thrive in various environments. However, its propagation using cuttings can be challenging due to the limited availability of carbohydrates and plant growth hormones in cuttings. Growth regulators, such as Indole-3-Butyric Acid (IBA) and Benzyl Adenine (BAP), play a crucial role in stimulating root and shoot growth, respectively. The selection of stem size is also an important factor in determining the success of cuttings.

Methodology

This study was conducted in a greenhouse for seven months, from January to August 2013. The research design used a randomized factorial group design with two main factors: stem diameter (6 mm, 12 mm, and 18 mm) and the type of growth regulators (aquadest, 400 ppm IBA + 400 ppm BAP, 600 ppm IBA + 600 ppm BAP, and 800 ppm IBA + 800 ppm BAP). Each combination of treatment was repeated three times. The parameters measured included the age of the buds, the height of the buds, the diameter of the shoots, the number of leaves, the fresh weight of the roots, the dry weight of the roots, the fresh weight of the shoots, and the dry weight of the shoots.

Results

The results showed that both stem diameter and the administration of growth regulators had a significant effect on all parameters, except for the age of the shoots. The interaction between the two factors did not show a significant effect on all parameters.

Discussion

This study provides an important picture of the factors that affect the growth of Bougainvillea cuttings. The results showed that the larger stem diameter (18 mm) produced a better growth in all parameters compared to the smaller stem diameter (6 mm and 12 mm). This is probably caused by the availability of more food reserves and growth hormones in larger stems. Giving growth regulators (IBA and BAP) significantly increased the growth of Bougainvillea cuttings. IBA stimulates root growth, while BAP stimulates the growth of shoots. Although the diameter of the stem and growth regulatory substances have a significant effect on cuttings growth, the interaction between the two factors did not show a significant effect.

Practical Recommendations and Applications

The results of this study provide several practical recommendations to increase the success of Bougainvillea propagation using the cuttings method:

Choose cuttings with a minimum diameter of 12 mm: The use of cuttings with a larger diameter will increase the growth of cuttings and successful propagation.
Use Growth Regulatory Substances IBA and BAP: Giving growth regulators proved effective in increasing the growth of roots and shoots in Bougainvillea cuttings.
Pay attention to the concentration of growth regulators: Provision of growth regulators with the right concentration is very important to get optimal results. Concentration that is too high can cause poisoning and inhibit growth.

Conclusion

Knowledge of the effect of stem diameter and growth regulatory substances on the growth of Bougainvillea cuttings can help practitioners in propagating plants more effectively and efficiently. This is important to support the sustainability of Bougainvillea plants and horticultural development in Indonesia.

Future Research Directions

Further research is needed to investigate the effect of other factors, such as light intensity and temperature, on the growth of Bougainvillea cuttings. Additionally, the use of other growth regulators and the development of new propagation techniques can also be explored.

Limitations of the Study

This study has several limitations, including the use of a small sample size and the limited number of growth regulators tested. Future studies should aim to increase the sample size and test a wider range of growth regulators.

Implications for Horticultural Practice

The results of this study have important implications for horticultural practice. By selecting cuttings with a minimum diameter of 12 mm and providing growth regulators, practitioners can increase the success of Bougainvillea propagation using the cuttings method. Additionally, the use of growth regulators with the right concentration is crucial to get optimal results.

Conclusion

In conclusion, this study provides valuable insights into the factors that affect the growth of Bougainvillea cuttings. The results show that stem diameter and the administration of growth regulators have a significant effect on the growth of cuttings. The practical recommendations and applications of this study can help practitioners in propagating plants more effectively and efficiently.

Q: What is the importance of stem diameter in Bougainvillea cutting propagation?

A: Stem diameter plays a crucial role in Bougainvillea cutting propagation. A larger stem diameter (12 mm or more) can increase the growth of cuttings and successful propagation. This is because larger stems have more food reserves and growth hormones, which are essential for plant growth.

Q: What are the effects of growth regulators on Bougainvillea cutting propagation?

A: Growth regulators, such as IBA and BAP, have a significant effect on Bougainvillea cutting propagation. IBA stimulates root growth, while BAP stimulates the growth of shoots. Providing growth regulators can increase the growth of roots and shoots in Bougainvillea cuttings.

Q: What is the optimal concentration of growth regulators for Bougainvillea cutting propagation?

A: The optimal concentration of growth regulators for Bougainvillea cutting propagation is crucial. Providing growth regulators with the right concentration is very important to get optimal results. Concentration that is too high can cause poisoning and inhibit growth.

Q: How can I increase the success of Bougainvillea cutting propagation?

A: To increase the success of Bougainvillea cutting propagation, you can follow these tips:

Choose cuttings with a minimum diameter of 12 mm.
Use growth regulators, such as IBA and BAP.
Pay attention to the concentration of growth regulators.
Provide adequate light and temperature conditions.

Q: What are the limitations of this study?

A: This study has several limitations, including the use of a small sample size and the limited number of growth regulators tested. Future studies should aim to increase the sample size and test a wider range of growth regulators.

Q: What are the implications of this study for horticultural practice?

A: The results of this study have important implications for horticultural practice. By selecting cuttings with a minimum diameter of 12 mm and providing growth regulators, practitioners can increase the success of Bougainvillea propagation using the cuttings method.

Q: What are the future research directions for this study?

A: Future research directions for this study include investigating the effect of other factors, such as light intensity and temperature, on the growth of Bougainvillea cuttings. Additionally, the use of other growth regulators and the development of new propagation techniques can also be explored.

Q: How can I apply the results of this study to my own horticultural practice?

A: You can apply the results of this study to your own horticultural practice by following the practical recommendations and applications outlined in this study. By selecting cuttings with a minimum diameter of 12 mm and providing growth regulators, you can increase the success of Bougainvillea propagation using the cuttings method.

Q: What are the potential applications of this study in the horticultural industry?

A: The results of this study have potential applications in the horticultural industry, including the development of new propagation techniques and the improvement of existing ones. Additionally, the study can provide valuable insights for horticultural practitioners and researchers.

Q: How can I stay up-to-date with the latest research on Bougainvillea cutting propagation?

A: You can stay up-to-date with the latest research on Bougainvillea cutting propagation by following reputable horticultural journals and online resources. Additionally, attending horticultural conferences and workshops can provide valuable opportunities for networking and learning about the latest research in the field.