Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Genetic Divergence in Stem Amaranth (amaranthus Tricolor L.) Genotypes for Yield and Its Component Characters

C. A. Akther
Department of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

M. Hasan
Department of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

M. S. Raihan
Department of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

M. M. Hossain
Department of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

M. A. K. Mian
Department of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

Abstract/ Executive Summary:

An investigation was carried out to identify the extent of genetic divergence that exist for the yield and yield contributing characters of seventeen genotypes of amaranth using Mahalanobis D² analysis. Analysis of variance showed significant difference among the genotypes for most of the characters studied. The genotypes under study fell into 4 clusters. The distribution pattern indicated that the maximum number of genotypes (6) was included in cluster (IV) followed by cluster III (5) and cluster II (5), and the minimum number was in cluster I (1). The inter cluster distance in most of the cases was higher than the intra cluster distance, which indicated wider genetic diversity among the accessions of different groups. The highest inter cluster distance was observed between IV and I, followed by the distance between cluster II and I showing wide diversity among the groups. The lowest inter-cluster distance was observed between clusters III and II suggesting a close relationship among the genotypes of these two clusters. The highest intra-cluster distance was observed for the cluster IV and the lowest for the cluster I. The positive values of vector I and vector 2 for stem weight and weight of leaf indicated that these two characters had the highest contribution towards the divergence among the stem amaranths. The genotypes of stem amaranth from cluster I and cluster IV may be selected as parents in future hybridization program.

Keywords: Stem amaranth, Cluster, Genetic divergence.

Location: Field Laboratory, Dept. of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur

Start Date: 00-00-2008

End Date: 00-00-2008

Program Area: Variety and Species

Commodity: Amaranth

Objectives:

To provide information on genetic divergence of 17 stem amaranth genotypes.

Methodology:

Seventeen genotypes of stem amaranth collected from different sources were studied to measure the diversity among the genotypes at the Field Laboratory, Dept. of Genetics and Plant Breeding, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur in 2008. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Data were recorded from randomly selected 10 plants from the plot of each replication on first flowering, plant height, leaf number, leaf length, weight of leaf, stem weight, stem diameter, dry weight with rind, dry weight without rind and marketable yield. The data were analyzed following Mahalanobis’s D²- statistics and principal component analysis (PCA) for assessment of genetic divergence among the genotypes of stem amaranth using GENSTAT 4.2b.

Source of Information: The Agriculturists 11(1): 82-88 (2013) ISSN 2304-7321 (Online), ISSN 1729-5211 (Print), A Scientific Journal of Krishi Foundation

Article Link (Online Journal): http://banglajol.info/index.php/AGRIC/article/view/15247/10810

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Genetic diversity was studied to detect the more diverse amaranth genotypes which might be used in hybridization program. Seventeen genotypes were grouped into four different clusters and the maximum number of genotypes (6) were included in cluster (IV). The highest inter cluster distance was observed between IV and I, while the highest intra-cluster distance was observed for the cluster IV. Stem and leaf weight had the highest contribution towards the divergence. The genotypes of stem amaranth from cluster I and cluster IV may therefore, be selected as parents in future hybridization program.

Knowledge Management: Journal