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Multivariate Analysis in Pumpkin (cucurbita Moschata Duch Ex Poir)

M. A.T Masud
Horticulture Division, Horticultural Research Centre, Bangladesh Agricultural Research Institute, Gazuipur-1701.

M.A.Z. Chowdhury
Scientific Officer, Oilseed Research Centre, BARl, Gazipur-1701.

M.A. Hossain
Horticulture Division, Horticultural Research Centre, Bangladesh Agricultural Research Institute, Gazuipur-1701.

S.M.M. Hossain
Horticulture Division, Horticultural Research Centre, Bangladesh Agricultural Research Institute, Gazuipur-1701.

Abstract/ Executive Summary:

The genetic divergence among 27 genotypes of pumpkin (Cucurbita moschata Duch ex Poir) collected from eight districts of Bangladesh was estimated using D² and principal component analyses. The genotypes were grouped into seven clusters. No relationship was found between genetic divergence and geographic distribution of the genotypes. Maximum intercluster distance was observed between cluster II & VII and was minimum between cluster V & VI. Number of fruits per plant and yield per plant showed maximum contribution to the total divergence. The results obtained by d analysis were confirmed by Principal component analysis.

Keywords: Pumpkin, Germplasm, Genotypes

Location: Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur.

Start Date: 00-12-1994

End Date: 00-05-1995

Program Area: Variety and Species

Commodity: Pumpkin

Objectives:

To know the source of gene for a particular trait within the available germplasm.

Methodology:

The experiment with 27 diverse pumpkin genotypes collected from different parts of the country representing the most adapted cultivars in different region was conducted during December 1994 to May 1995. All the 27 genotypes were grown in a randomized complete block design with three replications at the Experimental Farm of Horticulture Research Centre, Bangladesh Agricultural Research Institute, Gazipur. Sprouted seeds dibbled in polythene bags (22X9 cm) filled up with potting mixture in December 28, 1994. Eighteen days old healthy seedling at 3-4 leaf stage were transplanted in 4m² plots in four pits and two plants each. Fertilizers of 150 kg Urea, 125 kg TSP, 100 kg MP and 15000 kg Cowdung per hectare were applied as basal and three split applications. Observations were recorded on three randomly selected plants per replication for vine length (cm) at final harvest, days to maturity, fruit length (cm), fruit diameter (cm), fruit weight (kg), flesh thickness(cm), brix (%), sex ratio (male:female), fruits per plant, yield per plant (kg), seeds per fruit, dry weight of seeds per fruit (g) and dry matter (%). Plot means over three replications were used for statistical analysis. Clustering of genotypes was done according to Tocher's method and Principal Component analysis for graphical representation of the genotypes. All the statistical analysis were carried out using GENSTATS programme in IBM computer.

Source of Information: Bangladesh J. PI. Breed. Genet., 8 (1&2): 45-50, 1995

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The genotypes were grouped into seven clusters. No relationship was found between genetic divergence and geographic distribution of the genotypes. Maximum inter cluster distance was observed between cluster II & VII and was minimum between cluster V & VI. Number of fruits per plant and yield per plant showed maximum contribution to the total divergence. The results obtained by d analysis were confirmed by Principal component analysis.

Knowledge Management: Journal