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

Mutivariate Analysis in Stem Amaranth (amaranthus Tricolor)

A. U. Ahammed
Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur 1706, Bangladesh

M. M. Rahman
Department of Horticulture, 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:

The genetic divergence among 22 genotypes of stem amaranth was estimated using D² and Principal Component Analysis. The genotypes were grouped into four clusters. Cluster I, II, III and IV composed of two, four, seven and nine genotypes in succession. No relationship was found between divergence and geographic distribution of the genotypes. Maximum inter cluster distance (12.326) was observed between cluster I and III and it was minimum (3.526) between cluster I and II. The crosses between the genotypes of cluster I with that of cluster III and cluster II with cluster III would exhibit high heterosis and also likely to produce new recombinants with desired characters in stem amaranth. The yield contributing characters were leaves per plant, petiole length, stem diameter, leaf weight per plant and stem weight per plant. Leaf width, petiole length and 1000 seed weight showed maximum contribution to the total divergence. The results obtained by D² analysis were confirmed by Principal Component Analysis.

Keywords: Stem amaranth (Amaranthus tricolor); D²; PCA; Cluster analysis; Stem yield.

Location: Experimental field, Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, Bangladesh

Start Date: 00-04-2007

End Date: 00-07-2007

Program Area: Variety and Species

Commodity: Amaranth

Objectives:

The present study was undertaken to choose of genetically diverged parents to obtain desirable recombinant in segregating generations.

Methodology:

The experiment was conducted with 22 diverse stem amaranth genotypes collected from PGRC, BARI, East West Seed Co. (Lal Teer Seed Ltd.), BRAC and different parts of the country during April to July 2007. All the genotypes were grown in a Randomized Complete Block Design (RCBD) with three replications at the experimental field, Department of Horticulture, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Gazipur, Bangladesh. The plot size was 1.5 m x 1.5 m. The seed drilling was done between rows at 30 cm apart and seeds were sown continuously in the rows. Seedlings were thinned maintaining a spacing of 30 cm x 10 cm after 15 days of sowing. All the recommended package and practices were followed to raise good crop. The crop was harvested when started flowering. Data were recorded during harvesting time on plant height (cm), leaves per plant, leaf length (cm), leaf width (cm), petiole length (cm), stem diameter (mm), primary branches per plant, leaf weight per plant (g), stem weight per plant (g), leaf - stem ratio, fibre (%), stem yield (t/ha) and 1000 seed weight (g) during seed harvesting. Plot means over three replications were used to statistical analysis. Genetic diversity was studied following Mahalanobis’s (1936) generalized distance (D²) extended by Rao (1952). Clustering of genotypes was done according to Tocher’s method (Rao, 1952) and Principal Component Analysis (Rao, 1964) for graphical representation of the genotypes. All the statistical analyses were carried out using GENSTAT 5.3 program in IBM computer.

Source of Information: Bangladesh J. Pl. Breed. Genet., 26(1): 11-17, 2013

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The crosses involving parents belonging to the maximum divergent clusters were expected to manifest maximum heterosis and also wide variability in genetic architecture. Ramnujam et al. (1974) in mungbean and Mian and Bhal (1984) in chickpea reported that parental clusters separated by medium D² values exhibited significant and positive heterosis for seed yield and some of its components in mungbean . Thus crosses between the genotypes of cluster I with that of cluster III and cluster II with cluster III would exhibit high heterosis and also likely to produce new recombinants with desired characters in stem amaranth.

Knowledge Management: Journal