The effects of uniconazole dosages and suitable periods for bud break on the flowering of ‘Dai Loan’ mango (Mangifera indica L.) grown in Cho Moi district, An Giang province, 2016

Tran Van Hau * , Tran Sy Hieu , Phan HUynh Anh and Phan Van Ut

* Corresponding author (tvhau@ctu.edu.vn)

Article Sidebar

Full Text: PDF

Received: 08 Aug 2017
Revised: 13 Jan 2018
Accepted: 20 Jul 2018
Published: 31 Jul 2018
DOI: 10.22144/ctu.jen.2018.018
Views
319
Downloads
147
Crossref
Scopus
Google Scholar
Europe PMC
How to Cite
Tran, V. H., Tran, S. H., Phan, H. A., & Phan, V. U. (2018). The effects of uniconazole dosages and suitable periods for bud break on the flowering of ‘Dai Loan’ mango (Mangifera indica L.) grown in Cho Moi district, An Giang province, 2016. CTU Journal of Innovation and Sustainable Development , 54(09), 7-15. https://doi.org/10.22144/ctu.jen.2018.018
Issue
No. 09 (2018)

Main Article Content

Abstract

This study was aimed to investigate the effect of Uniconazole (UCZ), as a replacement for Paclobutrazol (PBZ), on flowering of ‘Dai Loan’ mango, and to determine suitable UCZ dosages and the periods for bud break. Experiments were conducted on 7-year-old trees arranged in completely randomized design with two factors, i.e. dosages of bud initiation agents, and periods for bud break. For the former factor, the three dosages of UCZ included 1, 1.5 and 2.0 g a.i. m-1 canopy diameter, and a positive control (PBZ at 1.5 g a.i. m-1 canopy diameter). The second factor comprised three periods for bud break after bud initiation applications, viz. 45, 60, and 75 days (DABIT). All treatments were repeated six times, each of which equalled to one tree. Results suggested that UCZ can definitely replace PBZ in regard to its effects on the flowering. Flowering ratio reached to the highest, 85.5 – 90.0% when UCZ was applied at 1.5 – 2.0 g a.i. m-1 canopy diameter, and subsequently followed by bud break treatment with KNO3 2.5% at 75 DABIT. In addition, inflorescence length was not different between PBZ and UCZ dosages, while UCZ 1.5 and 2.0 g a.i. treatment brought about higher number of hermaphrodite flowers per inflorescence. Furthermore, application of either PBZ or UCZ at 1.5 g a.i. m-1 canopy diameter combined with bud breaking treatment at 75 DABIT, resulted in the highest yield, i.e. 40.8 and 50.3 kg/tree, respectively. As for the characteristics and quality of fruit, neither the two investigated factors caused significant impact.
Keywords: Budbreak, ‘Dai Loan’ (Taiwan-Chian) mango, flower bud initiation, Paclobutrazol, Uniconazole

Article Details

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

References

Coombs, J., Hind, G., Leegood, R.C., Tieszen, L.L. and Vonshak, A., 1987. Analytical Techniques. In: Coombs J., Hall, D.O., Long, S.P., Scurlock, J.M.O., (Eds.). Techniques in Bioproductivity and photosynthesis, Second Edition. Oxford: Pegamon Press, pp. 219-220.

Davenport, T., 1994. Potential problems with use of uniconazole on mango (Mangifea indica). Plant Growth Regulation Society of America Quarterly. 22: 143-153.

Davis, T.D., Steffens, G.L. and Sankhla, N., 1988. Triazole plant growth regulators. Horticultural Reviews, 10: 63-105.

Dubois, M., Gilles, K.A., Hamilton, J.K., Rebers, P.T. and Smith, F., 1956. Colorimetric method for determination of sugars and related substances. Analytical chemistry. 28(3): 350-356.

Goguey, T., 1990. Effets d'applications répétées de Cultar (Paclobutrazol) sur Mangifera indica L. var. Valencia= Effects of the repeated applications of Cultar (Paclobutrazol) on Mangifera indica L. var. Valencia. Fruits. 45(6): 599-607.

Tran Van Hau, Tran Sy Hieu and Le Thi Thanh Thuy, 2010. Improving yield of year-round mango production. Project final report. Deparment of Science and technology, Dong Thap province: 165 pages (in Vietnamese).

IPCS, International Programme on Chemical Safety, 2017 access. [http://www.inchem.org/documents/icsc/icsc/eics0680.htm]. Accessed on 29-08-2017.

Krämer, W., Schirmer, U., Jeschke, P. and Witschel, M., 2007. Modern crop protection compounds. Wiley Online Library.

Kulkarni, V., 1988. Chemical control of tree vigour and the promotion of flowering and fruiting in mango (Mangifera indica L.) using paclobutrazol. Journal of Horticultural Science. 63(3): 557-566.

Litz, R.E., 2009. The mango: botany, production and uses. CABI International, Wallingford, UK.

Núñez-Elisea, R. and Davenport, T.L., 1994. Flowering of mango trees in containers as influenced by seasonal temperature and water stress. Scientia horticulturae. 58(1-2): 57-66.

Rademacher, W., 1988. New plant growth retardants: Biochemical background and possibilities for practical application. Proceedings of the VI International Symposium on Growth Regulators in Fruit Production 239, 477-484.

Silva, G., Souza, E., Rodrigues, J., Ono, E. and Mouco, M.D.C., 2009. Uniconazole on mango floral induction cultivar 'Kent' at submedio São Francisco region, Brazil. Proceedings of the XI International Symposium on Plant Bioregulators in Fruit Production 884, September 2009, 677-682.

Tongumpai, P., Charnwichit, S., Subhadrabandhu, S. and Ogata, R., 1996. Anatomical study of terminal bud development of mango treated with paclobutrazol. Proceedings of the V International Mango Symposium 455, 100-107.

Tongumpai, P., Jutamanee, K., Sethapakdi, R. and Subhadrabandhu, S., 1989. Variation in level of gibberellin-like substances, during vegetative growth and flowering of mango cv. Khiew Sawoey. Proceedings of the III International Mango Symposium 291, 105-108.

Tran Van Hau, 2008. Flowering induction - a text book (Giáo trình môn xử lý ra hoa) Vietnam National University publishing house, Ho Chi Minh city, Vietnam (in Vienamese).

Tran Van Hau, 2013. Flowering induction on 'Hoa Loc' and 'Cat Chu' mango Agricultural publishing house, Vietnam (in Vietnamese).

Tran Van Hau, Nguyen Thi Ngoc Lanh, Huynh Le Anh Nhi et al., 2016. Application of cultivation techniques to imptove yield, quality and to aim for year-round production of 'Cat Hoa Loc' mango toward VietGAP at Chau Thanh A district, Hau Giang province. Final project report. Department of Science and Technology, Hau Giang province, 172 pages (in Vietnamese).

Tran Van Hau, Tran Sy Hieu, Nguyen Chi Linh and Le Thi Thanh Thuy, 2014. Application of new cultivation techniqques to improve yield and quality of 'Cat Hoa Loc' mango produced toward GAP. Final project report. Deparment of Science and Technology, Tien Giang province, 144 pages (in Vietnamese).

Winston, E., 1992. Evaluation of paclobutrazol on growth, flowering and yield of mango cv. Kensington Pride. Australian Journal of Experimental Agriculture. 32(1): 97-104.