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Genetic Variability, Character Association and Path Analysis in Indian Mustard (brassica Juncea L.)

M. J. Uddin
RARS, Hathazari, Chittagong, Bangladesh.

M. F. U. Mia
RARS, Hathazari, Chittagong, Bangladesh.

M. A. Z. Chowdhury
RARS, Hathazari, Chittagong, Bangladesh.

Abstract/ Executive Summary:

Thirteen genotypes of Indian Mustard (Brassica juncea L.) were evaluated for yield and different yield contribution characters at the Regional Agricultural Research Station of BARI. Hathazari, Chittagong. Considerable genotypic and phenotypic coefficients of variation were observed in case of 1000 seed weight, seed yield per plant, primary branches per plant and siliqua per plant. Heritability values in broad sense were high in 1000 seed weight and moderately high for all the characters except branches per plant. Thousand seed weight and siliqua per plant had high values for genetic advance as percentage of mean. Correlation study revealed that seed yield per plant showed high positive and significant correlations with plant height, primary branches per plant and 1000 seed weight but high negative and significant correlations with seeds per siliqua both at genotypic and phenotypic level. Seeds per siliqua, 1000 seed weight and primary branches per plant had high positive direct effects on seed yield per plant. Days to maturity and plant height had considerable negative direct effects on seed yield per plant. The study indicated that selection on the basis of 1000 seed weight and primary branches would be effective to improve the seed yield of Indian mustard.

Keywords: Variability, Path analysis, Mustard

Location: Regional Agricultural Research Station, Hathazari, Chittagong.

Start Date: 00-00-1988

End Date: 00-00-1989

Program Area: Variety and Species

Commodity: Mustard

Objectives:

To find out the relationships between yield contributing characters and the direct and indirect effects of yield attributes on yield to improve the crop.

Methodology:

Thirteen genotypes of Brassica juncea L. including Sambal and Rai-5 as check were grown in a randomized complete block design with 4 replications at the Regional Agricultural Research Station, Hathazari, Chittagong during rabi season of 1988-89. The unit plot size was 6m x 4m. Seeding was done continuously in lines of 30 cm apart and the seedlings were then thinned keeping 5 cm apart. Normal cultural practices were followed to raise the crop. Data were collected from 10 randomly selected plants from each replication for plant height, primary branches per plant, siliqua per plant, seeds per siliqua, 1000.seed weight and seed yield per plant and the averages were used for analysis.

Source of Information: Ann. Bangladesh Agric. 5(1): 51-54, 1995

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Correlation study revealed that seed yield per plant showed high positive and significant correlations with plant height, primary branches per plant and 1000 seed weight but high negative and significant correlations with seeds per siliqua both at genotypic and phenotypic level. Seeds per siliqua, 1000 seed weight and primary branches per plant had high positive direct effects on seed yield per plant. Days to maturity and plant height had considerable negative direct effects on seed yield per plant. The study indicated that selection on the basis of 1000 seed weight and primary branches would be effective to improve the seed yield of Indian mustard.

Knowledge Management: Journal