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Studies on the Physico-chemical Characteristics of Some Mango Germplasm

M. A. Kabir
Department of Horticulture, HSTU, Dinajpur

M. A. Rahim
Department of Horticulture, BAU, Mymensingh

D. A. N. Majumder
Ph.D. Student, Department of Biotechnology, BAU, Mymensingh

Abstract/ Executive Summary:

Twelve mango germplasm viz., MI-001, MI-002, MI-004, MI-006, MI-009, MI-016, MI-023, MI-024, MI-025, MI-026, MI-027 and MI-028 were studied for their physio-morphological and physico-chemical characteristics under the ecological conditions of Mymensingh. The germplasm MI-028 was the best in respect of external appearance. Wide variations were observed among the germplasm in different quantitative characteristics like fruit and stone size and weight. MI-009, MI-027, MI-024 and MI-016 were found to have higher edible portion compared to other germplasm. Peel to pulp ratio as well as pulp to stone ratio was also determined and maximum ratios were observed in MI-027 and MI-023, respectively. Mango fruits were analyzed to observe the chemical compositions. MI-002 possessed maximum moisture and ash contents whereas MI-027 had the highest titratable acidity. The germplasm MI-001 stood first in respect of pH, TSS, total sugar as well as reducing sugar. In contrast, the maximum non-reducing sugar and sugar/acidity ratio were noted in MI-028. Moreover, in terms of vitamin C content MI-025 was the best one among the germplasm studied. Correlation matrix computed for the relationships among the 17 physico-chemical characters showed a wide range of variability in both positive and negative directions with significant and non-significant values.

Keywords: Physico-chemical, Mango, Germplasm

Location: Germplasm (GP) Center of Fruit Tree Improvement Project (FTIP), Department of Horticulture and the laboratory of the Dept. of Bio-chemistry, Bangladesh Agricultural University, Mymensingh

Start Date: 00-10-2000

End Date: 00-09-2001

Program Area: Quality and Nutrition

Commodity: Mango

Objectives:

1. To study the phusico-chemical characteristics of 12 mango germplasm under Mymensingh condition.

Methodology:

The present experiment was conducted at the Germplasm (GP) Center of Fruit Tree Improvement Project (FTIP), Department of Horticulture and the laboratory of the Dept. of Bio-chemistry, Bangladesh Agricultural University, Mymensingh during October, 2000 to September, 2001. The experiment was conducted on ten years old mango plants of 12 germplasm namely MI-001 (Rad) , MI-002 (Farooquebhog), MI-004 (Neelumbori), MI-006 (Neelumboti), MI-009 (Mallika), MI-016 (Tommy Atkin), MI-023 (Gopalbhog), MI-024 (Fazli), MI-025 (Langra), MI-026 (Khirsapat), MI-027 (Ashwina) and MI-028 (Amrapali) . The experiment was laid out in a RCBD with three replications, where a single uniform tree constituted the unit of replication. Both the distances between plant-to-plant and row-to-row were 6m. Similar intercultural operations were done as and when necessary. For this study, the mature fruits were collected randomly from the selected plants. Ten fruits from each of the selected germplasm were taken in the laboratory for recording their physical characteristics like shape of fruit, external appearance, skin colour at ripe stage, peeling quality, skin thickness, pulp colour, fruit weight, fruit size, edible portion, non-edible portion, peel to pulp ratio, stone weight, stone size and pulp to stone ratio. Chemical parameters of mangoes were studied immediately after harvest. Ash content was determined by oven-dried samples placed in a muffle furnace at 600⁰ C. The total soluble solid (TSS) content of mango pulp was estimated by using Abbe Refreactometer whereas, pH by pH meter. Total sugar was measured by anthrone method. Reducing sugar content of mango pulp was determined by dinitrosalicylic acid method. Ascorbic acid content and titratable acidity were determined by visual titration method.

Source of Information: J. Agrofores. Environ 1(1): 2007; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The germplasm MI-001 stood first in respect of pH, TSS, total sugar as well as reducing sugar. In contrast, the maximum non-reducing sugar and sugar/acidity ratio were noted in MI-028. Moreover, in terms of vitamin C content MI-025 was the best one among the germplasm studied. Correlation matrix computed for the relationships among the 17 physico-chemical characters showed a wide range of variability in both positive and negative directions with significant and non-significant values.

Knowledge Management: Journal