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Effect of Growth Regulators on Physical Changes and Shelf Life of Banana During Storage

M. S. Sultana
Lecturer
Open School, Bangladesh Open University, Gazipur, Bangladesh

M. Z. Islam
Water Management and Soil Conservation Wings, Bangladesh Water Development Board, Motijheel, Dhaka, Bangladesh

A. H. M. Shamim
Assistant Professor
School of Agriculture and Rural Development, Bangladesh Open University, Gazipur, Bangladesh

M. F. Mondal
Professor
Department of Horticulture, Bangladesh Agricultural University, Mymensingh

Abstract/ Executive Summary:

The experiment was conducted to evaluate the effect of growth regulators on physical changes and on shelf life of banana during storage. There were five growth regulators viz; control, gibberallic acid (GA₃), naphthalene acetic acid (NAA), benzyl adenine (BA) and kinetin with two varieties of banana viz Amritasagar (V₁) and Sabri (V₂). Results showed the striking changes between the varieties Amritasagar and Sabri fruits characteristics. Total weight loss (21.78%) was the highest in Amritasagar under control treatment, whereas GA₃treated Sabri the lowest (10.10%). The pulp to peel ratio were found significant except at 9^th and 12^th days of storage. At 6th days of storage the maximum and minimum moisture content (67.58% and 63.49%) were observed in Amritasagar with control (V₁T₀) and Sabri with GA₃ which followed by V₁T₁ (V₁: Amritasagar T₁: Gibberellic acid) treatment combination. The effect of growth regulator treatments and variety were not significant in relation to percent dry matter content at all days of storage. The growth regulators treatments showed highly significant variation in respect of shelf life among the treated and untreated bananas. GA₃, BA and Kinetin treatments exhibited better storage performances. The variety Sabri treated with GA₃ showed the longest shelf life (14.46 days) followed by BA treatment (12.30 days). The study revealed that GA₃ treatment found minimum weight loss, pulp to peel ratio, percent moisture content and percent dry mater content.

Keywords: Post harvest, Growth regulator, Total weight loss, Pulp to peel ratio, Moisture content, Shelf life

Location: Laboratories of Horticulture and Biochemistry Department of the Bangladesh Agricultural University, Mymensingh

Start Date: 00-00-2003

End Date:

Program Area: Postharvest and Agro-processing

Commodity: Banana

Objectives:

To find out the physiological changes of banana due to use growth regulators
To identify the suitable growth regulator in extending the shelf life

Methodology:

An experiment was conducted at the laboratories of Horticulture and Biochemistry Department of the Bangladesh Agricultural University, Mymensingh during the periods from 2003. The study was conducted in completely randomized design with three replications. There were two factor experiments with two banana cultivars viz., V₁= Amritasagar and V₂= Sabri, while five treatments were control (T₁), gibberellic acid (GA₃)-150 ppm (T₂), naphthalene acetic acid (NAA)-600 ppm (T₃), benzyl adenine (BA)-20 ppm (T₄) and Kinetin-15 ppm (T₅). All of the growth regulators were used in this study from synthetic origin. Mature banana fruits, physically similar fruits approximately more or less uniform in size, shape and color were selected from both the varieties for conducting the experiment. The post harvest treatments used in the present study were randomly assigned to the selected banana fruits. After the application of treatments the fruits were kept on a brown paper previously placed on laboratory floor at room temperature. Fruits were used in the experiment were monitored carefully in every day. Data on change in different physical characters total weight loss, pulp to peel ratio, percent moisture content, percent dry matter and self life of banana were recorded. Shelf life of banana was calculated by counting the day require to ripe fully as to retaining optimum marketing and eating quality. The collected data were statistically analyzed to find out the variation resulting from experimental treatments following F variance test. The significance of difference between the pair of means was compared by LSD test at 1% and 5% level of probability.

Source of Information: Int. J. Sustain. Crop Prod. 7(3):31-35, (2012)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Gibberellic acid (GA₃) treatment found minimum weight loss, pulp to peel ratio, percent moisture content, and percent dry mater content. The results also revealed that among the growth regulator treatments GA₃ appeared to be more suitable for extending the self life as well as other quality attributes of banana fruits. However, further investigation and research is encouraged to find out the optimum concentration of growth regulators GA₃ for improving of this technology.

Knowledge Management: Journal