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Genetic Variability, Character Association and Path Coefficient Analysis in Radish (raphanus Sativus L.)

M. Z. Ullah
Energypac Agro Ltd., Monipur, Hotapara, Gazipur, Bangladesh

M. J. Hasan
Hybrid Rice Project, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

A. H. M. A. Rahman
Ph.D. Fellow
Banagabandhu Sheikh Mujibur Rahman Agril. University, Gazipur-1706, Bangladesh

A. I. Saki
Bangladesh Agricultural Development Corporation, Madhupur, Tangail, Bangladesh

Abstract/ Executive Summary:

Genetic variability, correlation and path coefficient analysis of yield and yield contributing traits in twenty one varieties of radish were studied. Root length, leaf length and root yield showed high genotypic coefficient of variation and heritability with high genetic advance in percentage of mean. The highest genetic advance was observed in root yield. Root yield had significant and positive correlation with days to harvest, root length and root diameter, and showed only positive correlation with plant height and leaf width. Path coefficient analysis revealed that plant height had the maximum positive direct effect on root yield followed by root diameter, leaf width and days to harvest.

Keywords: Genetic variability, Radish, Heritability, Correlation, Path analysis, Root yield.

Location: Research & Development farm, Energypac Agro Ltd, Monipur, Gazipur

Start Date: 00-10-2009

End Date: 00-03-2010

Program Area: Variety and Species

Commodity: Radish

Objectives:

To find out and establish suitable selection criteria for higher root yield through study of genetic heritability, variability, genetic advance and relationship between yield and its components in radish.

Methodology:

The experiment was conducted at the Research & Development farm of Energypac Agro Ltd, Monipur, Gazipur during Rabi season 2009- 2010. Experimental materials consisted of twenty one genotypes of radish collected from different locations of Bangladesh, India and China. Seeds were sown on 5 October, 2009. The experiment was laid out in a Randomized Complete Block (RCB) Design with three replications. The plot size was 5m x 1.5 m with three rows per plot. The distance between rows was 40 cm and between plants was 20 cm. Data were recorded on eight characters such as plant height (cm), days to harvest, root length (cm), root diameter (cm), leaf length (cm), leaf width (cm) and root yield (g). Fertilizers were applied at 250, 200, 150, 100, 15 and 12 kg per hectare as urea, TSP, MP, gypsum, zinc sulphate and borax, respectively. All the fertilizers except urea were applied during land preparation. Urea was top dressed at 15-20 and 30-35 days of after seed sowing. Genotypic and phenotypic coefficients of variation were estimated. The broad sense heritability and genetic advance as percent of mean were calculated. Normal Pearson correlation was calculated using SPSS 10.0 software. Genotypic and phenotypic correlation coefficients were calculated. Path coefficient analysis was estimated.

Source of Information: The Agriculturists 8(2): 22-27(2010) ISSN-1729-5211, A Scientific Journal of Krishi Foundation

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

In correlation and path coefficient analysis, it is reveled that plant height, root length, leaf length, days to harvest and root yield are the most important yield components in radish. These characters also showed the high genotypic coefficient of variation and heritability and also high genetic advance in percent of mean. It is concluded that these components are important for determination of yield which should be given priority in the selection program and as well as for variety development.

Knowledge Management: Journal