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Effect of Growth Regulators on Plant Emergence, Growth and Flower Production of Gladiolus

M. K. Islam
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur-1701, Bangladesh.

A. K. M. Khorsheduzzaman
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur-1701, Bangladesh.

M. L. Rahman
Sher-e- Bangla Agricultural University, Sher-e-Banglanagar, Dhaka 1207, Bangladesh

M. Moniruzzaman
Horticulture Division, RARS,Hathazari, Chittagong, Bangladesh.

M. B. Talukder
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur-1701, Bangladesh.

M. A. Rahim
Department of Horticulture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Abstract/ Executive Summary:

Effect of growth regulators on plant emergence, growth and flower production of gladiolus were studied at Bangladesh Agricultural University, Mymensingh during November 2007 to April 2008 under a replicated field trial. Three doses of gibberellic acid (GA₃) viz. 50 ppm, 100 ppm, 200ppm and Paclobutrazol (PP333) viz.20 ppm, 40 ppm and 80 ppm including control treatments were tested. It was found that GA₃ showed better performance than the PP333, GA₃ at 200 ppm showed the best result in yield contributing characters such as reducing the number of days for 80% emergence, spike initiation, 80% harvest and increasing the number of tiller per hill, total number of spike per hill, length of spike and rachis, number of florets per spike and shelf-life of flower production of gladiolus.

Keywords: Flower, Gladiolul. Flower production

Location: Department of Horticulture, Bangladesh Agricultural University, Mymensingh.

Start Date: 00-11-2007

End Date: 00-04-2008

Program Area: Crop-Soil-Water Management

Commodity: Gladiolus

Objectives:

To find out the optimum level of GA₃ or Paclobutrazol for vegetative growth and quality production of gladiolus flowers.

Methodology:

The study was conducted at the field laboratory of USDA Allium project, Horticulture Farm, Bangladesh Agricultural University, Mymensingh during November 2007 to April 2008. The experiment were: i) GA₃ 50 ppm; ii) GA₃ 100 ppm; iii) GA₃ 200 pp; iv) PP333 20ppm; v) PP333 40 ppm; vi) PP333 80 ppm; vii) and untreated control. All the medium sized corms (16-25g) were treated separately with GA₃ and PP333 just 24 hours before planting. The plot size was 1.05 m x 1.00m. The treated corms were planted in November 15, 2007 at a depth of 6 cm furrows maintained 25 cm row to row and 15 cm plant to plant distance. The irrigation, fertilizers and manures were applied as recommended by Anon. for gladiolus. Plant protection measures and interventions were applied for good growth of the crop when necessary. Data were recorded from randomly selected five plants except 80% emergence, 80% spike harvest and yield per plot. The self-life of the flower was assessed in the laboratory keeping flowers in the vases at room temperature. The experimental data were analyzed on MSTAT package programme and the means were compared by Least Significant Difference (LSD) following Gomez and Gomez.

Source of Information: Bangladesh Journal of Agriculture, Vol: 37(1), pp: 17-21, 2012, ISSN: 0253-5408,

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Based on the result it can be concluded that Over all GA₃ @ 200 ppm showed better result in yield attributes and shelf life of flower production of gladiolus.

Knowledge Management: Journal