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Assessment of Variability in Twenty-four Lines of Blackgram (vigna Mungo L.)

M. A. Samad
Department of Botany, University of Rajshahi, Rajshahi-6205, Bangladesh

N. Sarker
Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi-6205, Bangladesh

J. K. Sarker
Department of Crop Science and Technology, University of Rajshahi, Rajshahi-6205, Bangladesh

A. K. Azad
Department of Botany, University of Rajshahi, Rajshahi-6205, Bangladesh

A. C. Deb
Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi-6205, Bangladesh

Abstract/ Executive Summary:

Variability, heritability and genetic advance were studied in twenty-four lines of blackgram for seven quantitative traits. The analysis of variance showed significant differences among genotypes for all the traits under study. Replication item was significant for all the traits except LA50%F and NS/P. Interaction (L×R) was significant for NSBFF, NL50%F, LA50%F, NS/P and RL50%F. The phenotypic variation (δ2p) was greater than those of δ2L, δ2LR and δ2w components of variation for all the traits. The highest phenotypic and genotypic variations were observed for LA50%F followed by NN50%. It is also noticed that phenotypic coefficients of variability (PCV) in general, were higher than the estimates of genotypic coefficients of variability (GCV) for all the traits. The traits viz., LA50%F and NN50% showed high GCV estimates whereas; NN50%, NSBFF, LA50%F, and NL50%F exhibited high PCV. The heritability, genetic advance (GA) and genetic advance as percentage of mean (GAM %) were found to be low.

Keywords: Variability, Heritability, Genetic advance, Blackgram

Location: BARI regional station, Ishurdi, Pabna

Start Date:

End Date:

Program Area: Variety and Species

Commodity: Black gram

Objectives:

To evaluate variability, heritability and genetic advance of seven agronomical characters in twenty-four blackgram genotypes to provide necessary information that could be useful in blackgram improvement programs desired to improve yield traits.

Methodology:

Plant materials - Twenty-four blackgram lines were taken as materials. The seeds of blackgram were collected from BARI regional station, Ishurdi, Pabna, Bangladesh. Layout of the experimental field and trial of the lines was conducted under completely randomized block design with 3 replications. The data of seven quantitative traits viz., leaf area at 50% flower (LA50%F), root length at 50% flower (RL50%F), number of nodule at 50% flower (NN50%F), number of leaf at 50% flower (NL50%F), plant height at first flower (PHFF), number of secondary branch at first flower (NSBFF) and number of seed/plant (NS/P) were collected on individual plant basis following C.G.S system. Statistical analysis - The analysis of variance of a mixed modal was used, where line (L) fixed and replication (R) random.

Source of Information: International Journal of Biosciences | IJB |; ISSN: 2220-6655 (Print) 2222-5234 (Online); Vol. 3, No. 8, p. 307-312, 2013

Article Link (Online Journal): http://www.innspub.net; doi: http://dx.doi.org/10.12692/ijb/3.8.307-312

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results of the present investigation revealed that the characters included are quantitative in nature and provided environmental factors are to be controlled as far as possible as low PCV, GCV, heritability and GA were observed in these materials.

Knowledge Management: Journal